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  Development trends of helical planetary gearboxes

  1.Brief learning about the helical planetary gearboxA ​helical planetary gearbox​ is a speed reducing transmission system that combines a planetary gear arrangement with helical gearing teeth cut at an angle to the gear's axis rather than straight across. The helical teeth engage gradually and simultaneously over a larger contact area, delivering smoother torque transmission, lower noise, higher load capacity, and greater precision than conventional spur tooth planetary gearboxes, all while retaining the planetary design's compact footprint and high torque density.​​​​2.Main types of helical planetary gearboxes1.Inline Helical Planetary Gearboxes: The most common type where the input and output shafts are aligned in a straight line. They are widely used for general industrial machinery like mixers and pumps.2.Right Angle Helical Planetary Gearboxes: These combine planetary stages with bevel gears to transmit motion at a 90 angle. They are ideal for space constrained layouts in robotics and conveyors.3.Single Stage Gearboxes: These consist of a single set of planet gears orbiting a sun gear, offering moderate reduction ratios and high efficiency.4.Multi Stage Gearboxes: Multiple planetary stages are connected in series to achieve much higher reduction ratios and massive torque for heavy duty applications like mining and cranes.5.High Precision / Low Backlash Gearboxes: Specifically engineered for minimal "play", often less than 1 to 3 arc minutes. These are essential for CNC machines, surgical robotics, and aerospace systems.6.Coaxial Planetary Gearboxes: These have input and output shafts on the exact same axis to ensure minimal energy loss and a very slim profile.          3.Structure advantages of helical planetary gearboxes1.Compact Power Transmission Layout:A helical planetary gearbox uses a central sun gear, several planet gears, a ring gear, and a planet carrier arranged around the same axis. This structure allows multiple gears to share the load within a limited space.2.Higher Load Carrying Capacity:Because several planet gears mesh with the sun gear and ring gear at the same time, the transmitted load is distributed across multiple contact points. This reduces stress on any single gear tooth and improves the gearbox’s ability to handle heavy duty working conditions.3.Smooth and Quiet Operation:The angled teeth of helical gears engage gradually rather than all at once. This creates smoother meshing, reduces impact during rotation, and lowers vibration. As a result, a helical planetary gearbox is well suited for equipment that requires quiet operation, stable motion, and reduced mechanical noise.4.High Transmission Efficiency:The planetary structure keeps the gear train well aligned and minimizes unnecessary power loss. At the same time, the helical gear design provides continuous tooth contact, which helps maintain steady torque transfer. 5.Excellent Torque Density:Torque density refers to how much torque a gearbox can transmit relative to its size and weight. The helical planetary design performs strongly in this area because its internal structure makes full use of the available gear space. 6.Strong Coaxial Structure:The input shaft and output shaft of a planetary gearbox are usually arranged on the same centerline. This coaxial layout simplifies equipment design, improves alignment, and reduces installation complexity. 7.Better Shock Resistance:The multi gear load sharing structure gives the gearbox stronger resistance to impact loads. When sudden torque changes occur, the force can be absorbed and distributed by several planet gears instead of concentrating on one gear pair. 8.Stable Speed Reduction Performance:Helical planetary gearboxes can provide large reduction ratios within a compact structure. By combining multiple planetary stages, the gearbox can achieve precise and stable speed reduction while maintaining high torque output. 4.Development trends of helical planetary gearboxes1.Higher Torque Density in a Smaller Envelope:One clear direction in helical planetary gearbox development is the pursuit of greater torque capacity without increasing the external size. Equipment manufacturers are paying more attention to compact drive systems, especially in automation, robotics, packaging machinery, and new energy equipment.2.Improved Precision and Lower Backlash:As servo systems and intelligent equipment become more widely used, the demand for accurate positioning continues to rise. Helical planetary gearboxes are no longer judged only by torque and reduction ratio. Backlash control, repeatability, and motion stability have become key performance indicators.3.Quieter and Smoother Transmission:Noise reduction is becoming an important development target, particularly for equipment used in laboratories, medical devices, commercial automation, and indoor production environments. The helical gear structure already has an advantage in smooth meshing, but manufacturers are still improving tooth surface finishing, gear grinding accuracy, and housing rigidity.4.Higher Efficiency and Lower Energy Loss:Energy efficiency is receiving more attention across almost every industrial field. For helical planetary gearboxes, future development will focus on reducing friction loss, improving lubrication performance, and controlling heat generation during continuous operation.5.Use of Advanced Materials and Heat Treatment:The performance limit of a gearbox is closely related to the strength and wear resistance of its internal components. In the future, high-strength alloy steels, improved carburizing processes, nitriding treatment, and precision grinding will be used more widely.6.Better Thermal Management:With higher torque density and more compact structures, heat dissipation becomes a more serious design issue. Excessive temperature can affect lubrication, reduce bearing life, and accelerate seal aging. Therefore, thermal management will become a key part of gearbox development.

  2026.04.25

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  Main challenges of CNC motion controller

  1.Brief learning about CNC motion controllerA ​CNC motion controller​ is the core computing and command generation unit of a Computer Numerical Control system. It interprets part programs, executes mathematical interpolation, and generates coordinated, real time motion commands for the machine's axes. Unlike a general purpose computer, a motion controller is specifically optimised for deterministic timing, multi axis synchronisation, and seamless integration with servo drives and I/O devices.​​2.Working principles of CNC motion controller1.Instruction interpretation:It reads and parses G code/M code programs input by the operator or CAD/CAM software, identifying target positions, feed rates, machining paths, and auxiliary commands.2.Trajectory planning:Based on the machining program, the controller calculates smooth motion paths using interpolation algorithms. It computes real time coordinate points for each axis to ensure continuous and accurate contouring.3.Multi axis coordination:It synchronizes the motion of multiple axes simultaneously, ensuring coordinated movement to form complex 2D/3D/rotary contours without distortion or deviation.4.Pulse/signal output:The controller converts planned trajectories into high speed pulse signals or bus signals and sends them to servo/stepper drives, controlling motor speed, direction, and displacement.5.Closed loop feedback control:It receives real time position and speed data from encoders installed on motors or axes. By comparing command values with actual feedback values, it automatically compensates for errors to maintain high precision.6.Real time logic control:It manages I/O signals: limit switches, emergency stop, spindle control, coolant, chuck clamping, and rotary axis brake, ensuring safe and stable operation.7.Error protection and adjustment:It monitors overtravel, overcurrent, overload, and position deviation. Once abnormal, it immediately stops motion and alarms to protect the machine and workpiece.            3.Design significance of CNC motion controller1.It turns a pile of metal into a precision machine:Without a well designed motion controller, your motors, drives, and guides are just expensive hardware. The controller's architecture is what makes a milling machine trace a perfect circle or a lathe cut a flawless thread.2.It lets you coordinate multiple axes like a dance team:On a 5 axis machining center, the tool tip must move along a complex 3D path while the table rotates simultaneously. This demands flawless synchronisation among all axes. The controller' design determines whether those axes work in perfect harmony or fight each other. Good design turns chaos into choreography.3.It makes the machine smart enough to avoid crashes:A well designed motion controller doesn't move. It monitors position feedback, checks software limits, and can detect an over travel or a following error before a crash happens. Many modern controllers also include collision avoidance algorithms that simulate the next move and halt if something looks wrong. 4.It gives you the freedom to adapt:Proprietary, locked down controllers are a nightmare to upgrade or integrate with new sensors. A clever design embraces open standards, Linux ased real time kernels, or published APIs. This means you can add a probe, a vision system, or even swap out drives without rewriting everything. 5.It hides its own complexity so you can focus on cutting:The best motion controller design is almost invisible. It handles complex tasks like look ahead, kinematic transformations, and jerk limited profiling in the background, while presenting a simple, responsive interface to the operator.6.It turns tiny errors into tiny corrections:Feedback control loops are at the heart of the controller'design. When a servo lags behind by a few microns, a well tuned loop pushes it back immediately. Without that design, you' see chatter, poor tolerances, and a pile of rejected parts.4.Main challenges of CNC motion controller1.Balancing interpolation accuracy with real time computational demand:One of the most fundamental challenges of a CNC motion controller lies in interpolation. The controller must convert programmed geometry into dense motion commands that each axis can execute in real time. Once the toolpath includes circular interpolation, splines, NURBS curves, or multi-axis freeform surfaces, the computational burden rises sharply.2.Coordinating multiple axes without losing contour fidelity:A CNC motion controller rarely controls one axis in isolation. Its real task is to coordinate several axes so that the combined motion produces the intended contour. This becomes especially difficult when axis dynamics are inconsistent. 3.Handling the contradiction between speed and accuracy:In CNC systems, higher productivity usually means higher feedrate, faster acceleration, and shorter non cutting time. But every increase in speed places more pressure on the motion controller. Rapid motion amplifies structural vibration, servo lag, following error, and corner deviation.4.Maintaining stability under changing mechanical and cutting conditions:Another major challenge is that the controller does not operate in a static environment. The machine structure changes with temperature, the cutting force changes with engagement, the friction condition changes with speed and lubrication, and the load changes with the workpiece and fixture.5.Suppressing vibration without making the system unresponsive:Vibration is one of the most difficult problems in CNC motion control because it sits at the boundary between mechanical structure and control strategy. High acceleration commands, abrupt feed changes, structural resonance, long tool overhang, and intermittent cutting can all excite oscillation.6.Managing look ahead and trajectory smoothing effectively:Modern CNC motion controllers rely heavily on look ahead functions. The controller reads upcoming program blocks in advance and adjusts speed, acceleration, and jerk so that motion remains continuous and efficient.Source:​https://steppermotor.pixnet.net/blog/posts/885443648586088119​

  2026.04.16

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  Common faults of manual linear stage

  1.Core definitions of manual linear stageA ​manual linear stage​ is a precision mechanical component designed to restrict an object to a single axis of linear motion, realizing accurate position adjustment and stable movement through manual operation rather than electrical or hydraulic drives. It is a key part of precision positioning systems, which constrains the moving platform to only one degree of freedom by limiting three rotational axes and two other translational axes, ensuring that the load moves stably and accurately along a preset linear path.​​2.Working steps of manual linear stage1.Mount the stage:Clean the mounting surface.Position the stage so its axis of motion aligns with your required direction.2.Attach the payload:Place the workpiece, sensor, or component onto the moving carriage.Use an adapter plate if mounting hole patterns do not match.3.Zero or reference the drive:For a micrometer: turn the thimble until the carriage contacts a hard stop, then set the thimble scale to zero.For a leadscrew with knob: move the carriage to a known starting position and note the dial reading.4.Take up backlash:Always approach the target position from the same direction.If you overshoot, back up well past the target and then re‑approach from the original direction.5.Coarse positioning:Turn the micrometer thimble or leadscrew knob rapidly to bring the carriage near the desired position.Keep an eye on the scale to avoid overshooting by more than a few millimeters.6.Fine positioning:Switch to slow, careful turns.For a micrometer, use the knurled thimble; each division typically represents 0.01 mm or 0.5 µm.7.Lock the position and verify stability:Tighten the stage’s locking screw to prevent accidental movement.Gently tap the payload or the stage base. The carriage should not move.8.Release and return:Loosen the locking screw completely.Turn the drive mechanism to return the carriage to its zero or home position, again approaching from the same direction to maintain consistency.               3.Main functions of manual linear stage1.Precision positioning function:This is the core function of the manual linear stage. By virtue of the precision transmission mechanism, it can achieve micron-level or even nanometer-level position adjustment, ensuring that the load is accurately positioned at the preset position. 2.Stable linear movement function:The guide rail component of the manual linear stage ensures that the moving platform moves stably along a straight line without deviation or jitter. The movement process is smooth and noiseless, avoiding damage to the load or errors in operation caused by unstable movement.3.Load-bearing and fixing function:The base and moving platform of the manual linear stage are made of high-strength materials through precision machining, which has a certain load-bearing capacity. It can stably bear the weight of the load and fix the load through the locking device to prevent displacement during operation.4.Multi-axis combination function:A single manual linear stage can only achieve one-axis linear movement. By combining multiple manual linear stages, a multi-axis positioning system can be formed to realize multi-directional position adjustment of the load.5.Emergency stop and protection Function:Most manual linear stages are equipped with a locking device, which can quickly lock the moving platform in case of emergency, preventing the load from falling or being damaged. In addition, some high-precision manual linear stages are equipped with limit blocks to prevent the moving platform from moving beyond the stroke range, avoiding damage to the transmission mechanism or guide rail.4.Common faults of manual linear stage1.Inaccurate positioning & excessive repeat positioning error:This is the most frequent fault of manual linear stages, especially in high-precision application scenarios, where even small deviations can render test or machining results invalid.2.Unsmooth movement & jamming:This fault directly affects the operability of the manual linear stage, and severe jamming may cause irreversible damage to components such as the lead screw or guide rail.3.Loose components & abnormal vibration:Loose components are often caused by long-term vibration or improper installation, and if not handled in time, they may lead to more serious faults such as component damage or positioning failure.4.Locking mechanism failure:The locking mechanism is used to fix the stage in a specific position after positioning; its failure will result in the stage being unable to maintain position, seriously affecting work accuracy.5.Lead screw damage & transmission failure:The lead screw is the core transmission component of the manual linear stage; its damage will directly lead to the stage being unable to move or position accurately.The handwheel rotates smoothly, but the stage does not move or moves intermittently.6.Guide rail wear & poor parallelism:The guide rail ensures the linearity of the stage movement; its wear or poor parallelism will affect movement smoothness and positioning accuracy.The stage jams easily when moving along the guide rail, and the movement resistance varies at different positions.7.Scale/Indicator failure:The scale (or micrometer indicator) is the key component for manual positioning; its failure will make it impossible for the operator to accurately judge the moving distance.The digital display (for digital manual stages) has incorrect readings, flashes, or fails to display.

  2026.04.09

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  The Application of servo motor and how it works

  A ​servo motor​ is an electric actuator that operates as part of a closed-loop system. It includes a feedback mechanism—typically a sensor such as an encoder—that continuously reports the motor's actual position or speed to a controller. This allows the system to adjust its output until the desired state is reached.When a command is sent, an electrical signal moves the output shaft to a specified angle, position, or velocity. The feedback device />Servo motors operate within a closed-loop system, meaning position and speed are continuously monitored and adjusted. In contrast, open-loop systems execute commands without verifying the final position.A typical servo motor consists of a standard DC or AC motor combined with a feedback sensor and a control circuit. The control circuit interprets input signals and drives the motor accordingly.Types of Servo MotorsServo motors are available in several configurations, each suited to different types of movement. Three common types include:Continuous rotation servos are designed to spin continuously in either direction. Speed can be controlled, but position cannot. Hobbyist projects—small robots, toy cars, or RC vehicles—often rely on these motors for drive systems.Positional rotation servos move to and hold a specific angular position, typically within a range of 0 to 180 degrees. They are used in radio-controlled models, robotic arms, and other applications where angular positioning is required.Linear servos produce motion along a straight line rather than rotating. They are found in applications requiring precise linear movement, such as industrial automation or actuation systems.Beyond configuration, servo motors also differ in their power source, which affects where and how they are used. AC and DC Servo MotorsServo motors may be powered by either alternating current (AC) or direct current (DC). The choice between the two depends on the application requirements.​AC servo motors​ are commonly used in industrial equipment such as machine tools, robotics, and automation systems. They are designed to handle higher voltages and are typically found in applications requiring continuous operation. Voltage changes are managed through external transformers or drives.​DC servo motors​ are often used in smaller systems where rapid response and straightforward control are needed. Current flow is unidirectional, and control is typically achieved by varying the voltage applied to the motor windings. These motors appear frequently in battery-powered devices, hobbyist projects, and small-scale automation. Applications of Servo MotorsServo motors appear in various industrial and consumer applications. In manufacturing, they control axis movement in machine tools and CNC equipment. Factory automation systems—conveyors, pick-and-place units, and assembly lines—also rely on them for motion control.Material handling and packaging machinery represent another major use case. Robotics, both industrial and hobbyist, depends on servo motors for joint movement and positioning. Radio-controlled models use them to control surfaces or steering in airplanes, cars, and boats.Other applications include:Aerospace systems, where they regulate hydraulic valves and actuatorsAutomotive systems, such as cruise control actuators and throttle controlConsumer electronics, including DVD and Blu-ray players, where they open and close disc traysToys and educational kits that require controlled motionIn each of these applications, the servo motor operates within its rated specifications. Acceleration, speed, and torque are determined by the motor design and the drive system used.Operational CharacteristicsServo drives regulate motor speed, position, and acceleration through closed-loop control. When energized, the motor can maintain a set position. Acceleration and deceleration rates are defined by the motor's specifications and the capabilities of the connected drive.Machines and robots equipped with servo motors are capable of controlled motion across a range of operating conditions. Their performance is influenced by factors such as load, speed, and duty cycle—all of which are outlined in manufacturer documentation.Servo motors are available with different cost structures and maintenance intervals depending on the model and application. They can be integrated into systems that support standard control interfaces, provided that voltage, current, and signal requirements are met.Source:​https://www.oyostepper.com/article-1117-The-Application-of-servo-motor-and-how-it-works.html​

  2026.03.31

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  Tips on How to Choose a Brushless DC Motor

  ​Brushless DC motors​ operate using electronic commutation rather than mechanical brushes. This design affects how they are powered and controlled. To run a BLDC motor, a controller is required to manage the electrical signals that regulate speed, direction, and torque.When choosing both components, a few basic specifications determine compatibility with your application.​​Motor SpecificationsSpeed and torque are two primary performance characteristics. Each motor has a rated speed range and a continuous torque output. When these match the mechanical demands of an application, the motor operates within its design limits.Physical size affects where the motor can be installed. Smaller motors typically weigh less and occupy less space. Torque and power output vary by model and can be reviewed alongside size.Voltage rating determines what power supply the motor requires. Common ratings for smaller BLDC motors include 12V and 24V. The controller selected must match the motor voltage.Operating environment may influence motor selection. Factors such as ambient temperature, humidity, and exposure to dust or moisture can affect motor performance and lifespan. Some motors are built with enclosures or materials intended for specific environmental conditions, such as high humidity or dust exposure. Driver SelectionOnce motor specifications are defined, the next step is selecting a controller that can drive it effectively. A brushless DC motor driver converts DC power into a sequenced output that drives the motor windings. Controllers vary in features and complexity. Basic models offer speed control, while others support direction changes, braking, or closed-loop operation with feedback.Three factors are worth reviewing when selecting a controller:Voltage and current ratings must meet or exceed the motor's requirementsControl interface may be analog (via potentiometer or voltage signal) or digital (via PWM, I²C, or serial communication)Commutation method should match the motor type—sensorless controllers are common for simpler applications, while hall sensor feedback supports low-speed controlMatching Components to ApplicationsNo single motor or controller fits every use case. A small fan or pump may run on a basic 12V sensorless driver. A robotic joint may require a 24V controller with position feedback and torque limiting.Final ConsiderationsMotor specifications such as speed, torque, voltage, and physical size can be reviewed alongside controller compatibility. When these parameters match the intended use, the motor operates within its design limits.For questions about selecting a BLDC motor or controller for a specific application, contacting a supplier with detailed requirements can help identify options that meet those specifications.Source:​https://www.oyostepper.com/article-1126-Tips-on-How-to-Choose-a-Brushless-DC-Motor.html​​​

  2026.03.25

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  Maintenance methods and performance advantages of five-phase stepper motors

  1. Basic introduction to five-phase stepper motorsThe ​five-phase stepper motor​ contains five sets of independent windings (usually marked as A, B, C, D, and E phases), which generate a rotating magnetic field to drive the rotor through a specific sequence of energization. Compared with two-phase motors, the number of windings is increased, which can achieve more precise step angle control. Its characteristics include high resolution, low vibration, low noise and fast response. Suitable for precision automation equipment.​​2. Main operating modes of five-phase stepper motors1. Full-phase stepping: Each step angle corresponds to the activation of all five phases (A, B, C, D, and E phases), which can produce maximum torque output, but the lowest angle resolution (usually 0.72°/step). ‌2. Half-phase stepping: By alternately activating different phases (such as activating three phases first and then two phases, or vice versa), each step is subdivided into two sub-steps, which improves the angle resolution but reduces the torque output. For example, based on full-phase stepping, it is achieved by controlling the signal timing.3. Subdivision operation: By adjusting the intensity of each phase drive signal, the movement is subdivided into smaller displacements (such as 0.36°/step), which is suitable for high-precision control scenarios and is commonly used in laser processing, precision instruments and other fields. This mode requires a dedicated driver to achieve dynamic adjustment.3. Performance advantages of five-phase stepper motors1. High resolution: The standard step angle of a five-phase stepper motor is usually 0.72° (corresponding to 500 steps/rev), which is higher than the common two-phase motor (1.8°/200 steps/rev or 0.9°/400 steps/rev). Its smaller physical step angle can directly improve the precision of position control.2. Low vibration and noise: The low-speed operation vibration and noise of the five-phase motor are significantly lower than those of the two-phase motor. Due to more energized phases, the torque pulsation is smaller, especially in low-speed or fine stepping scenarios, the stability is better. ‌3. Dynamic performance: The five-phase motor has faster dynamic response and is suitable for application scenarios that require fast start and stop or high-precision tracking. Although the high-speed response capability is slightly inferior to that of the same-sized four-phase motor, the overall dynamic performance is still better than that of the two-phase motor.4. Control accuracy: The five-phase stepper motor has a high theoretical accuracy under open-loop control, and can achieve higher resolution with the driver micro-step subdivision technology. Its inherent step angle is small, the positioning error is smaller, and it is suitable for precision equipment.5. Drive complexity: The five-phase motor requires a more complex drive circuit (such as 10 power tubes) and control logic, which is more expensive, but professional drivers can support more sophisticated current control strategies.4. Maintenance methods for five-phase stepper motors1. Operating environment control: Keep the motor surface clean to avoid dust accumulation affecting heat dissipation. Ensure that the air inlet is unobstructed to prevent fiber and dust from clogging. Avoid long-term operation of the motor in high temperature (>60℃) or humid environment, and take protective measures in harsh environment. ‌2. Load management: Avoid overload operation and regularly check whether the load equipment is operating normally. If abnormal vibration, noise or overheating (>80℃) occurs, stop the machine immediately for inspection. When the load is too large, it is necessary to replace a higher power motor or optimize the drive solution. ‌3. Lubrication maintenance: Check the bearing lubrication status regularly. After 5000 hours of operation, the grease (such as ZL-3 lithium grease) needs to be replenished or replaced. When replacing, the old grease must be completely removed to ensure that the grease filling amount is appropriate (1/2 cavity for 2-pole motors and 2/3 cavity for 4-8 poles). ‌4. Troubleshooting: If the protection device is frequently activated, it is necessary to check whether it is falsely triggered due to overload or too low setting value of the protection device. The motor can be restarted only after the fault is eliminated. ‌5. Insulation monitoring: Regularly use an insulation resistance meter to detect the insulation performance of the winding (low-voltage motors should be ≥0.5 megohms). If it is lower than the standard, it needs to be dried or repaired.Source:​https://steppermotor1.livedoor.blog/archives/9113615.html​

  2025.07.14

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  Structural advantages and common applications of permanent magnet stepper motors

  1. Basic introduction to permanent magnet stepper motors​Permanent magnet stepper motors​ are devices that convert electrical energy into mechanical energy. Their core feature is that the rotor uses permanent magnets, which can generate a magnetic field with alternating polarity in the air gap. When the stator winding is energized, the rotor will align with the direction of the magnetic field determined by the phase winding. When the winding is switched, the rotor will rotate a specific angle to achieve stepping motion.​​2. Working principle of permanent magnet stepper motorsThe working principle of permanent magnet stepper motors is based on the principle of electromagnetism. Its internal structure includes a fixed part (stator) and a movable part (rotor). The stator has a gear-like protrusion with a coil wound on it, and the rotor is a permanent magnet. When the stator phase is energized, the current passing through the coil generates a magnetic field, and the rotor will align with the magnetic field. By applying voltage to different phases in turn, the rotor will rotate a specific angle and eventually reach the required position.3. Structural advantages of permanent magnet stepper motors‌1. High efficiency‌: One of the biggest advantages of permanent magnet stepper motors is their high efficiency. Because it uses high-performance permanent magnetic materials, it does not require an external power supply to provide a magnetic field, which reduces energy loss, so the efficiency can reach more than 90%, which is significantly higher than traditional motors.2. Excellent power density: Permanent magnet stepper motors have higher output power at the same volume and weight. This feature makes it particularly outstanding in application environments with limited space, such as electric vehicles, robots, and portable devices. High power density not only improves the performance of the equipment, but also helps to reduce the weight of the equipment, which is conducive to the portability and flexibility of the product.3. Wide operating range: Permanent magnet stepper motors have a wide operating range and can work stably under various working conditions. Because its starting and running torque is relatively constant, it can still maintain good performance even at low speeds and high loads. This is particularly important in application scenarios that require frequent starting and stopping, such as elevators, lifts, etc.4. Low maintenance cost: Compared with traditional motors, permanent magnet stepper motors have less mechanical wear. Its brushless design eliminates the wear and replacement of carbon brushes, greatly reducing maintenance costs. This low maintenance requirement enables permanent magnet stepper motors to maintain high reliability in long-term operation and reduce downtime.‌5. High precision and repeatability: Permanent magnet linear stepper motors can achieve high-precision linear motion through precise linear motion control technology and efficient drive algorithms. Feedback systems such as grating scales or encoders provide real-time position information to the motor, and the drive algorithm adjusts the current and voltage based on this information to ensure the accuracy of the stepping action.4. Common applications of permanent magnet stepper motors1. Industrial automation and control: In CNC machine tools (CNC), permanent magnet stepper motors are used to drive the X, Y, and Z axes of lathes, milling machines, and engraving machines for precise linear or rotational motion, and control tool position and feed speed. In addition, they are also used in 3D printers to accurately control the movement of the print head and platform to achieve layer-by-layer material stacking.‌2. Medical and laboratory equipment‌: In the medical field, permanent magnet stepper motors are used to control the rotation and positioning of the scanning head of CT/X-ray machines, adjust the precise position of certain components in nuclear magnetic resonance, and control the propulsion speed and distance of the piston in the infusion pump/syringe pump to achieve trace and uniform delivery of liquid medicine‌. In laboratory equipment, they are also used in DNA sequencers and automated sample processors to accurately move the position of sample trays and detection probes‌.‌3. Office automation equipment‌: In printers, scanners, copiers and fax machines, permanent magnet stepper motors are used to control the precise movement of print heads, scanning heads and paper‌1. In addition, they are also used in plotters to accurately control the movement of drawing pens or knives and draw fine graphics‌.4‌. Consumer electronics and household appliances‌: In cameras, smart door locks and air conditioners, permanent magnet stepper motors are used to control the translation, pitch and rotation of cameras, the electronic unlocking of smart door locks, and the swing of air guide plates of air conditioners‌.5. Other applications: Permanent magnet stepper motors are also used in stage lighting to control the angle and zoom of spotlights, as well as in instrumentation and control to rotate car dashboard pointers and adjust valve openings.

  2025.06.25

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  Main control methods and maintenance tips for servo motors

  1. Basic definition of servo motorsA ​servo motor​ is an actuator motor used to precisely control the movement of mechanical components in a servo system. It can convert electrical signals into angular displacement or angular velocity, and has the characteristics of high precision, fast response and high stability. It achieves precise adjustment of position, speed and torque through a closed-loop control system, and is widely used in automation equipment, robots, CNC machine tools and other fields. ‌‌​​2. Working steps of servo motors1. Control signal reception: The controller (such as PLC, motion controller or microprocessor) generates a control signal according to a preset control algorithm, representing the desired motor position, speed or torque.‌2. Precision control: After receiving the control signal, the servo drive adjusts the power supply to the motor to ensure that the actual motion state of the motor is consistent with the requirements of the control signal, involving complex current, voltage regulation and pulse width modulation (PWM) technology.‌3. Feedback mechanism: The built-in or external encoder monitors the actual position, speed and/or torque of the motor in real time, and feeds this information back to the drive and even the controller.‌4. Closed-loop control‌: The driver compares the actual feedback value with the target value of the control signal, calculates the deviation and adjusts the motor's drive current accordingly to achieve closed-loop control, ensuring that the servo motor can respond to the control command quickly and accurately, and achieve high-precision positioning and dynamic performance‌.3. Main control methods of servo motors1. Amplitude control ‌: By changing the amplitude of the control voltage, keeping the frequency and phase unchanged, the speed and torque of the motor are adjusted. In essence, the output is controlled by adjusting the voltage amplitude to affect the magnetic field strength.2. Phase control ‌: Keep the control voltage amplitude and frequency unchanged, only change the phase difference, and affect the rotation direction of the magnetic field or the size of the synthetic magnetic field through phase changes, thereby adjusting the motor's operating state‌.3. Amplitude-phase control ‌: Simultaneously adjust the amplitude and phase of the control voltage, comprehensively adjust the magnetic field characteristics, and achieve precise control of the motor‌.4. Speed ​​control , position control and torque control ‌: These are the three most common control methods for servo motors. Speed ​​control is used to adjust the speed of the motor; position control is used to accurately control the position of the motor; torque control is used to adjust the output torque of the motor.5. Fuzzy control: The motor parameters are self-learned through fuzzy logic algorithms to improve the stability and response accuracy of the motor under different loads and operating conditions. This method obtains the correlation information between the motor structure and load changes by jointly sampling and eliminating interference from multi-source operating data in the industrial site.6. PID control: In complex environments, the three-loop superposition PID control logic of the current loop, speed loop and position loop is used to optimize the pointing stability and communication performance of the motor. This method can effectively overcome the limitations of the single-loop PID control of stepper motors and ensure the stable pointing and communication performance of the motor in various complex environments.4. Servo motor maintenance tips1. Regular inspection and maintenance: Regularly check the various components of the servo motor, including encoders, bearings, gears, etc., to ensure that they are firmly connected and well lubricated. Clean the dust and dirt on the surface of the motor to keep the motor clean.‌2. Avoid overload operation‌: Match the rated load and speed of the motor reasonably to avoid overload operation. Check the maximum radial load force of the motor, improve the mechanical design, and ensure that the motor runs under a reasonable load‌.‌3. Pay attention to heat dissipation issues‌: Ensure that there is enough ventilation space around the motor to avoid overheating of the motor. Clean the air duct and take cooling measures to ensure that the motor runs at a suitable temperature‌.‌4. Reasonably control the operating environment‌: Ensure that the temperature, humidity, dust and other factors of the motor operating environment are within a reasonable range. In high temperature, high humidity or dusty environments, the heat dissipation and cleaning of the motor should be strengthened‌.‌5. Check the connection wire regularly‌: Check whether the motor connection wire is loose or damaged to ensure a firm connection. Check whether the motor grounding wire is reliably grounded to ensure the safe operation of the motor‌.‌6. Check the lubrication condition regularly‌: Regularly check the lubrication condition of the bearings and gears of the servo motor, and add or replace the lubricating oil in time to ensure the smooth operation of the motor‌.‌7. Follow the operating procedures‌: When operating the servo motor, the operating procedures and safety specifications of the equipment should be followed to avoid improper operations such as frequent starting, stopping or overspeeding to reduce impact and wear on the motor‌.

  2025.06.04

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  What are the selection principles for right-angle planetary gearboxes?

  1. Working principle of right-angle planetary gearboxesThe working principle of ​right-angle planetary gearboxes​ is based on the special design of planetary gears. Planetary gears can not only rotate around their own rotation axis (autorotation) like fixed-axis gears, but also rotate around the axis of other gears (revolution) with the planetary carrier. This design enables the gearbox to achieve efficient transmission when the input shaft and output shaft are at right angles.​​2. Basic structure of planetary gearbox1. Planet carrier: The planetary carrier is a disc-shaped structure with three shafts evenly fixed on it. These shafts are distributed at an angle of 120 degrees and remain parallel to each other. The rotating shaft of the planetary carrier is installed inside the bearing, and the other end is connected to the low-speed shaft flange, which is connected to the main shaft of the wind wheel.2. Planetary gears: The three planetary gears are installed on the three shafts of the planetary carrier and can rotate freely around their respective axes, ensuring the flexibility and efficiency of the gearbox.3. Ring gear: The ring gear is an internal gear whose internal teeth mesh with the planetary gears. When the planet carrier rotates, the planetary gear rolls along the inner teeth of the ring gear.‌4. Sun gear: The sun gear is the high-speed output shaft, and its tooth design meshes with all planetary gears to ensure efficient transmission.3. Advantages of right-angle planetary gearboxes1. High-precision transmission: The continuous advancement of manufacturing technology has made the transmission accuracy of right-angle planetary gearboxes higher and higher. The use of advanced processing technology and precision assembly technology can control the tooth profile error of the gear within a very small range, thereby ensuring that the rotation accuracy of the output shaft reaches the micron level.‌2. Diversified customization capabilities: Many manufacturers provide customized services for right-angle planetary gearboxes, and can adjust the reduction ratio, output torque, external dimensions and other parameters according to the special requirements of customers to meet different application requirements.‌3. High efficiency and energy saving: The right-angle planetary gearbox adopts an efficient lubrication system and optimized internal structure design. The lubricating oil can form a good oil film between each friction pair to reduce energy loss; the reasonable structural layout reduces unnecessary mechanical resistance and improves the overall transmission efficiency.‌4. Compactness and flexibility‌: Right-angle planetary gearboxes are simple in design, reliable in performance and extremely cost-effective. They can be integrated into applications through a variety of connection methods, providing a variety of installation options, increasing design flexibility‌. In addition, right-angle planetary gearboxes can be installed and used in any mounting position, which provides users with greater design flexibility‌.‌5. High load capacity and long life‌: The planetary gear system of the right-angle planetary gearbox has a high load capacity and can work stably under heavy loads and challenging environments. Its design allows for lifetime lubrication, which further extends its service life‌.‌6. Multiple installation methods‌: Right-angle planetary gearboxes usually provide a variety of installation methods, such as flange mounting, shaft mounting, etc., to meet different application requirements.4. Selection principles of right-angle planetary gearboxes1. Reduction ratio selection‌: First, you need to determine the required reduction ratio. The reduction ratio is the ratio of the input speed to the output speed. Selecting a suitable reduction ratio can achieve the required output speed. The selection of the reduction ratio should ensure that the value of the servo motor's rated torque multiplied by the reduction ratio is less than the rated output torque of the similar reducer provided in the product sample, and the required maximum working torque is less than 2 times the rated output torque.‌2. Accuracy requirements: Select the appropriate accuracy level according to the application scenario's requirements for transmission accuracy. Accuracy levels are usually divided into general accuracy, high accuracy and ultra-precision levels. Users should select the appropriate accuracy level according to actual needs.‌3. Power requirements: Select the rated power of the planetary gear reducer according to the power of the drive motor and the required output power in the application scenario. The rated power of the reducer should be greater than or equal to the required output power to ensure the normal operation of the equipment.‌4. Reliability requirements: Select a planetary gear reducer with high reliability and long life. Reliability includes the quality of the reducer, the manufacturing process, the durability of the parts, etc.‌5. Installation requirements: Consider the installation space and layout requirements of the planetary gear reducer and select the appropriate size and form. Right-angle planetary gearboxes usually have different installation forms, such as flange type, bearing type, flange bearing type, etc. Select the appropriate installation form according to the actual situation.‌6. Maintenance requirements‌: Consider the maintenance requirements of the planetary gear reducer and choose a model that is easy to maintain and repair. Maintenance requirements include sealing performance, parts replacement, etc.‌

  2025.05.13

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  What are the design difficulties of hollow shaft stepper motors?

  1. Definition and principle of hollow shaft stepper motors​Hollow shaft stepper motors​ are a specially designed stepper motor whose core feature is that they have one or more hollow shafts. These shafts not only allow other parts of the motor to pass through, but also integrate additional functions as needed, such as heat dissipation, connection to other devices, etc. The working principle of hollow shaft stepper motors is based on the law of electromagnetic induction. When the current in the wire coil changes, a magnetic field is generated around it, which exerts a force on the nearby coil, causing the coil to move. By controlling the number and sequence of energized coils, the rotation angle and direction of the rotor can be controlled.​​2. Unique advantages of hollow shaft stepper motors1. Optimized mechanical design: The design of the hollow shaft stepper motor allows a hollow hole in the center of the shaft. This structure makes the mechanical design more compact and optimized, and can transmit materials, signals, light, etc. through the axial space, thereby reducing volume and weight.‌2. Convenient wiring and cost saving‌: The hollow structure is convenient for wiring, which can avoid the twisting and damage of cables, especially in application scenarios where cables, wires, and sensor signals need to be transmitted. This feature is particularly important. In addition, hollow shaft stepper motors can also save design space and production costs.‌3. Versatility‌: The hollow structure of the hollow shaft stepper motor can be integrated with the rotating mechanism to achieve a compound action of rotation and linear motion, which increases the diversity of its application scenarios. For example, in optical and laser equipment, the hollow structure can easily transmit light beams and simplify the design and integration of optical paths.‌4. High-precision control‌: The hollow shaft stepper motor can accurately control the rotation angle and is widely used in occasions that require precise positioning and synchronous control, such as automated production lines, robot arms, medical devices, etc. This high-precision control capability makes it perform well in high-precision applications.3. The main design difficulties of hollow shaft stepper motors1. Precision control‌: The hollow shaft stepper motor has very high precision requirements for the inner hole diameter and thread. Most of the motors with such high precision requirements are customized and need to be "tailored to the needs". Otherwise, it is difficult to meet the customer's requirements and ensure the mechanical accuracy and running accuracy of the entire stepper motor.2. Design and manufacturing process: The manufacture of hollow cup motors involves nearly 30 complicated processes, from the careful winding of the front coil to the precise installation of the core components in the middle section, to the meticulous assembly of the rear cover and the precision welding of the circuit board. Each link tests the technical strength of the manufacturer. In particular, the design and winding process of the coil directly affect the performance and quality of the motor.3. Material selection and processing: The design and manufacture of hollow shaft stepper motors require the selection of suitable materials and ensure processing accuracy. The selection of materials should not only consider their mechanical properties, but also their processing difficulty and cost. During the processing, even small errors may affect the performance of the final product.4. Thermal design and heat dissipation issues: Since the hollow shaft design increases the volume and surface area of ​​the motor, the thermal design becomes more complicated. It is necessary to arrange the heat sink reasonably or adopt other heat dissipation measures to ensure that the motor will not overheat during long-term operation, affecting performance and life.5. Cost control: High-precision design and manufacturing are often accompanied by high costs. How to control costs while ensuring performance is an important challenge in the design process.4. Application scenarios of hollow shaft stepper motors1. Automated production line: On the automated production line, hollow shaft stepper motors are used to accurately control the motion trajectory of the robot arm to improve production efficiency and product quality.2. Robot arm: In robotics, hollow shaft stepper motors can improve the operating accuracy and flexibility of robots, especially in operations with high precision requirements.3. Medical devices: In fields such as surgical robots, hollow shaft stepper motors play a key role in ensuring the accuracy and safety of surgery.4. Optical equipment: In optical and laser equipment such as laser cutting, laser welding, and laser marking, the hollow structure of the hollow shaft stepper motor conveniently transmits the light beam, simplifying the optical path design and integration.5. Other applications: In applications such as water pumps, ventilation equipment, boosting equipment, small hydro-generators, and propellers, hollow shaft stepper motors reduce volume and weight, reduce noise, and improve equipment performance and efficiency.Source:​https://teal-taro-kgp8cw.mystrikingly.com/blog/what-are-the-design-difficulties-of-hollow-shaft-stepper-motors​

  2025.04.18

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  Installation precautions for hollow rotary actuators

  1. Introduction to hollow rotary actuatorsThe ​hollow rotary actuator​ is a special rotary actuator with a hollow structure, which is convenient for installing air pipes and wires in the jig. Its working principle is to achieve the rotation effect through the meshing of the gears of the inner and outer rings. The gears on the inner and outer rings mesh with each other, and the rotation force is transmitted to the inner or outer ring through the transmission mechanism. This design is not only compact and comprehensive, but also has the characteristics of high repeatability, high rigidity and high rotation accuracy.‌​​2. Components of hollow rotary actuators1. Motor: Provides power source, usually a frameless torque motor with high torque output and high motion accuracy.‌2. Reducer: Reduces the high-speed rotation of the motor and increases the output torque, so that the actuator can provide a large torque at a low speed. Common types of reducers include harmonic reducers and planetary gear reducers.‌3. Sensor: Including torque sensors and encoders, which are used to monitor the motion state and position of the actuator to ensure precise control.‌4. Bearings‌: Support and guide the rotational motion, reduce friction and wear, and improve the service life and precision of the actuator.‌5. Hollow design‌: The hollow rotary actuator is characterized by its hollow structure inside, which can accommodate cables, water pipes or other pipelines that need to pass through, facilitating internal wiring and maintenance.3. Main functions of hollow rotary actuators1. Provide degrees of freedom‌: The hollow rotary actuator provides degrees of freedom for the robot, allowing the robot to move in multiple directions. The degree of freedom of a robot refers to the number of independent coordinate axis movements. The higher the degree of freedom, the more complex the tasks that the robot can perform.‌2. Improve the load-bearing capacity and precision‌: The performance of the hollow rotary actuator directly affects the load-bearing capacity and precision of the robot. The load capacity of the robot and the precision of the end motion depend on the design and performance of the rotary actuator. High-precision rotary actuators can ensure the stability and accuracy of the robot when performing tasks.‌3. Realize multi-dimensional precise motion control‌: The hollow rotary platform has high precision, stability and flexibility, and can achieve multi-dimensional precise motion control. This enables the robot to perform high-precision operations in various complex environments, such as high-precision welding, assembly, etc. ‌ .‌4. Improve production efficiency and reduce costs ‌: By using a hollow rotating platform, the robot can rotate 360 ​​degrees without changing direction, which is very useful for robots that require visual monitoring and data collection, such as patrol robots or filming robots. In addition, in the manufacturing industry, the hollow rotating platform can help robots avoid collisions with conveyor belts and maintain effective operation, thereby improving production efficiency and reducing costs ‌.4. Installation precautions for hollow rotary actuators ‌ 1. Installation environment requirements ‌: The hollow rotating platform should be installed indoors to avoid direct sunlight and heat radiation. The working environment temperature should be between 0-50 degrees, and the temperature under the origin sensor should be between 0-42 degrees. The working environment humidity should be less than 85%, and flammable and explosive acidic gases and dust, oil stains, splashing water, etc. should be avoided ‌.‌2. Installation location selection ‌: Choose a suitable location to install the hollow rotating platform to ensure that it will not be subjected to direct vibration and excessive impact. The installation surface of the equipment should be clean and can be wiped clean with anti-rust oil or gasoline, zinc-sodium water.‌3. Installation and adjustment of the drive motor: Before installation, the motor input shaft, positioning boss and internal connection parts of the equipment should be cleaned, and avoid using tools such as hammers to prevent damage to bearings or gears. After installation, the drive motor needs to be carefully positioned and precision adjusted to ensure smooth and stable operation of the equipment.‌4. Sealing inspection: Pay special attention to the sealing inside the equipment, especially the sealing of the rotating shaft of the servo hollow rotating platform. Ensure the sealing inside the equipment to prevent environmental pollution.‌5. Installation of connecting parts: During the installation process, ensure that the concentricity of the motor input shaft and the output shaft of the hollow platform are consistent, and the outer flanges are parallel. When tightening with bolts, the bolts should be rotated diagonally first, and then tightened one by one to ensure the stability and precision of the equipment.

  2025.03.27

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  Common Problems and Solutions of Right-Angle Planetary Gearboxes

  ‌1.Working Principle of Right-Angle Planetary GearboxesThe working principle of ​right-angle planetary gearboxes​ is based on the combination of planetary gear system and right-angle transmission. Its core is the planetary gear system, which consists of sun gear, planetary gear and inner ring gear. When the input shaft rotates, the sun gear drives the planetary gear to rotate around the inner ring gear, and the planetary gear itself also rotates around its axis. Through reasonable gear ratio design, the output shaft can achieve rotational motion perpendicular to the input shaft.​​2.Control method of right-angle planetary gearbox‌1.Input shaft control: By controlling the speed and direction of the input shaft, the speed and direction of the output shaft can be adjusted. The rotational motion of the input shaft is transmitted to the output shaft through the gear transmission system to achieve deceleration and direction conversion.‌2.Gear ratio design: By reasonably designing the gear ratio, the speed and torque of the output shaft can be controlled. The design of the gear ratio directly affects the output performance of the output shaft, and a reasonable gear ratio design can improve the transmission efficiency and stability.‌3.Lubrication and cooling system: Maintaining proper lubrication and cooling is essential to ensure the normal operation of the gearbox. Regular inspection and maintenance of the lubrication system and cooling system can extend the service life of the gearbox and improve its reliability.3.Problems and preventive measures of right-angle planetary gearbox1.Gear damage: Gear damage mainly includes tooth surface damage and gear tooth breakage. Tooth surface damage may be caused by poor lubrication, improper design or improper material selection. Preventive measures include reasonable design of gear parameters, selection of appropriate materials and lubricants, and ensuring machining accuracy.‌2.Bearing damage: As the core component of the gearbox, the failure of the bearing is usually caused by poor lubrication, improper installation or foreign matter entry. Preventive measures include regular inspection of the bearing status, ensuring sufficient lubrication, and avoiding foreign matter entry during installation.‌3.Shaft breakage: Shaft breakage may be caused by overload, fatigue or random fracture. Preventive measures include reasonable design of load, selection of appropriate materials and optimization of design parameters, and ensuring machining accuracy.‌4.Oil leakage and excessive oil temperature: Oil leakage may be caused by aging or damage of seals, while excessive oil temperature may be caused by poor lubrication or poor heat dissipation. Preventive measures include regular inspection of seals, ensuring adequate lubrication, and taking appropriate heat dissipation measures.4.Manufacturing standards for right-angle planetary gearboxes‌1.Accuracy requirements: The manufacturing and processing accuracy of right-angle planetary gearboxes is critical to transmission efficiency. Modern gear design generally considers the collaborative design of a pair of meshing gears rather than the design of a single gear. Most modern gears use a variable gear design, and 3D direct processing is an effective way to improve efficiency.‌2.Materials and heat treatment: The tooth surface of the gearbox is hardened to improve wear resistance and service life. For example, the tooth surface of some gearboxes is hardened to adapt to different load conditions and working environments.‌3.Design and manufacturing standards: The design and manufacturing of right-angle planetary gearboxes need to follow certain standards and specifications. For example, the NGW type is commonly used in the design of high-speed planetary gear transmissions, and herringbone gears are used, with a pressure angle of 20° or 22°30', a helix angle of 18°~30°, a normal tooth top height coefficient of 0.9, and a smaller module to improve the contact fatigue strength and running smoothness of the gear.‌4.Performance parameters‌: The performance parameters of the right-angle planetary gearbox include specifications, size, reduction ratio, speed, output torque, load conditions, environmental requirements, input power, accuracy and noise requirements, etc. These parameters need to be determined according to actual application requirements to ensure that the gearbox can meet specific application scenarios‌.Source:​https://teal-taro-kgp8cw.mystrikingly.com/blog/common-problems-and-solutions-of-right-angle-planetary-gearboxes​

  2025.03.05

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  Main advantages and common faults of Linear Guide Rail

  1.Definition of Linear Guide Rails​Linear Guide Rail​ is a mechanical component used to support and guide moving parts to make reciprocating linear motion in a given direction. It is widely used in high-precision or high-speed linear reciprocating motion occasions, and can bear a certain torque, and can still achieve high-precision linear motion under high load conditions.​​2.Two main categories of Linear Guide Rail1.Rolling linear guide rail: By placing rolling elements such as balls, rollers or needles between the guide surfaces, the sliding friction between the guide surfaces is converted into rolling friction. It has the characteristics of small friction coefficient, smooth movement, fast response speed, high positioning accuracy, strong load-bearing capacity, small wear, and long service life. It is suitable for precision machinery and automation equipment.2.Sliding linear guide rail: It relies on the sliding friction between the guide surfaces to support and guide the moving parts. It has a simple structure, is easy to manufacture and install, and has low cost. It is suitable for low speed, heavy load or large impact load occasions.3.Common faults of Linear Guide Rail‌1.Slider travel problem: After the slider travels for a period of time, the end cover and the end dust cover are deformed or broken. This may be due to the wrong installation method, resulting in only one side of the slider and the track being stressed, or being affected by external forces.‌2.Track indentation and steel ball rupture: After a period of use, the track has indentation and the steel ball ruptures. The main reason is that the overload causes the steel ball to leave the track, causing the steel ball to rupture, and then the track is damaged.‌3.Poor lubrication: Poor lubrication can cause linear guides to burn, rust and rust. Insufficient lubrication will increase friction and cause equipment failure.‌4.Overload: Overload can cause linear guides to burn and rust. Overload can cause the steel ball to leave the track, causing the steel ball to rupture, and then the track is damaged.‌5.Installation problems‌: Incorrect installation methods can cause unilateral force, which in turn can cause deformation or breakage of the end cap and end dustproof‌.‌6.Foreign matter entering‌: Foreign matter entering the slider can cause poor lubrication and indentation. Foreign matter can destroy the oil film, causing increased friction between metals, which in turn causes wear and indentation‌.4.Main advantages of Linear Guide Rails‌1.High precision‌: Linear Guide Rail ensures high precision of movement through precision machining and high-precision assembly. For example, the friction coefficient of SMS Linear Guide Rail is as low as 1/50 of that of the sliding guide, and the difference between dynamic and static friction is also small, which can achieve μm-level positioning accuracy‌.2‌.Low friction‌: Linear Guide Rail adopts a rolling design with a low friction coefficient and smooth movement, which reduces energy consumption and improves the operating efficiency of the equipment. For example, CNC machine tools can significantly reduce power loss by using Linear Guide Rail‌.‌3.High load capacity‌: Linear Guide Rail can withstand higher loads and is suitable for heavy-duty equipment. For example, large CNC machine tools and heavy industrial machinery often use Linear Guide Rail to ensure stable operation.‌4.Long life: Linear Guide Rail adopts high-quality materials and advanced manufacturing processes, and has a long service life. For example, the use of high-carbon steel improves the wear resistance of the guide rail, ensuring that the machine can maintain accuracy for a long time.‌5.High rigidity: Linear Guide Rail has high rigidity and can withstand large shocks and vibrations, ensuring stable operation of equipment under dynamic conditions.‌6.Strong durability: Linear Guide Rail is wear-resistant and corrosion-resistant, and is suitable for various harsh industrial environments such as high temperature, high humidity and dusty environments.‌7.Simple maintenance: Linear Guide Rail is interchangeable, and it is simple and convenient to replace the slider or rail, and can quickly restore high-precision sliding guidance.Source:​https://www.khedmeh.com/wall/blogs/post/84212​

  2025.02.12

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  Precautions for using waterproof stepper motors

  1.Brief description of waterproof stepper motors​Waterproof stepper motors​ are stepper motors that can work normally under a certain waterproof level. It effectively prevents water, dust, etc. from entering the motor through special shell design and waterproof shaft seal and other technical means, so as to maintain normal operation in harsh environments. Waterproof stepper motors have the advantages of high efficiency, stability and reliability, and are widely used in home appliances, machinery, automobiles and other industries.​​2.Design features of waterproof stepper motors1.Insulation material: The motor winding adopts polyethylene insulation and nylon household waterproof electromagnetic wire. The cable connection method is based on cable joint technology. The seam insulation is removed from the scraped paint layer, the welding is firm, and the raw rubber is wrapped around the layer to ensure waterproofing.‌2.Anti-corrosion material: The outer part of the motor is made of anti-corrosion material or anti-corrosion coating, and the sealing mechanism blocks the cracks or channels that may exist inside and outside to ensure that water does not enter the motor and cause short circuit failure. 3.IP protection level: The motor industry has a standardized liquid protection measure called IP protection level, which power engineering and motor manufacturers need to meet the application specification requirements.3.Structural composition of waterproof stepper motors1.Housing: Made of stainless steel, it has good waterproof and dustproof performance and can work normally in harsh environments.2.Motor drive part: It includes the motor body, circuit board and power supply, providing efficient and stable power output.3.Bearing: High-strength bearings are used to withstand high loads and high speed requirements.4.Sealing ring: Made of high-strength materials, it effectively prevents corrosion and moisture from penetrating into the motor.5.Stator: The stator is the stationary part of the stepper motor, usually composed of multiple poles, which can be permanent magnets or electromagnets. Its main function is to generate a magnetic field and drive the rotor to rotate.6.Rotor: The rotor is the rotating part of the stepper motor, usually made of magnetic materials, which can be permanent magnets or soft magnetic materials. Its main function is to generate torque under the action of the magnetic field generated by the stator to rotate the motor.7.Winding: The winding is the conductive part of the stepper motor, usually wound around the magnetic poles of the stator, generating an electromagnetic field to drive the rotor to rotate.‌8.Controller: The controller is the control part of the stepper motor, responsible for receiving pulse signals and converting them into motor rotation, usually including drive circuits, pulse distributors and microprocessors, etc.‌9.Encoder: The encoder is the feedback part of the stepper motor, used to detect the rotation position and speed of the motor, usually including photoelectric encoders, magnetic encoders or Hall sensors.‌4.Precautions for the use of waterproof stepper motors1.Control signal line and power supply connection: Make sure that the control signal line is firmly connected, and it is best to consider shielding issues at industrial sites. The power supply voltage should be appropriate, and the +/- polarity of the DC input must not be connected incorrectly. The motor model or current setting value on the drive controller should be appropriate.‌2.Grounding method: Be sure to understand the grounding method. Using floating without connection may cause the motor to work unstably. Closely observe the status of the motor within half an hour of starting operation, such as whether the movement is normal, the sound and temperature rise, and stop and adjust immediately if any problems are found.‌3.Use environment‌: Although waterproof stepper motors can be used in dusty, humid or oily places, it does not mean that they can work in water. Try to place them in a relatively clean environment and avoid long-term immersion in water‌.‌4.Maintenance and care‌: Regularly check the exterior, fixed parts, output shaft, encoder connection cable, power connector, cooling fan, etc. of the stepper motor to ensure that they are firmly connected and operate normally. Clean dust and oil in time to ensure that the motor is in normal condition‌.‌5.Cable protection‌: Ensure that the cable is not subjected to torque or vertical load due to external bending force or its own weight, especially at the cable outlet or connection. In the case of moving stepper motors, the cable should be firmly fixed to a stationary part, and it should be extended with an additional cable installed in the cable support to reduce bending stress‌.‌6.Load control‌: Ensure that the radial and axial loads applied to the stepper motor shaft during installation and operation are controlled within the specified values ​​for each model. It is best to use a flexible coupling to reduce load damage or wear on the shaft end and bearings‌.‌7.Installation precautions‌: When installing/removing the coupling component to the stepper motor shaft end, do not hit the shaft end directly with a hammer to avoid damaging the encoder. Try to align the shaft end to the best state to avoid vibration or bearing damage‌.Similar articles:​https://www.storeboard.com/blogs/electronics/the-correct-way-to-use-a-hybrid-stepper-motor/5912026​

  2024.12.26

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  How to effectively protect the gear stepper motor

  1.Basic definition of gear stepper motorA ​gear stepper motor​ is a device that converts electrical pulse signals into mechanical motion. For each input pulse signal, the rotor will rotate a fixed angle or move forward one step. The angular displacement or linear displacement of its output is proportional to the number of input pulses, and the speed is proportional to the pulse frequency. Gear stepper motors are usually composed of a stator and a rotor, with multiple windings on the stator and a permanent magnet or reactive structure.​​2.Working principle of gear stepper motorThe gear stepper motor converts DC power into a multi-phase timing control current with time-sharing power supply through a stepper motor driver, and uses the change of magnetic potential to cause the rotor to move, thereby achieving stepping. In order to minimize the possibility of losing steps or motor stalling, the gear size needs to be carefully determined to ensure that the motor matches the load and application parameters.3.Reasons for the high transmission efficiency of gear stepper motors‌1.Self-centering characteristics: In gear transmission, if the gear accuracy meets the requirements, the meshing between them is self-centering. This means that the position of the gear will be automatically adjusted during the movement, so that the meshing surfaces always maintain good contact. This self-centering characteristic can make the gear transmission efficient.‌2.No slip phenomenon: The meshing between the tooth surfaces in the gear transmission transmits power through direct contact. This contact is direct and firm, so there will be no slip phenomenon. This ensures the energy conversion efficiency of the transmission, and due to the direct contact between the tooth surfaces, the accuracy of the gear transmission is also high.‌3.Transmitting large torque: Gear transmission has the characteristics of transmitting large torque. Since the more teeth a gear has, the larger the contact area between them, so it can withstand a larger load. At the same time, the larger the diameter of the gear, the more torque they can withstand.‌4.Low friction: In gear transmission, the contact between the tooth surfaces is solid contact, so the friction loss is small and the energy conversion efficiency is high.‌4.Protection matters of gear stepper motor‌1.Environmental maintenance: Although the stepper motor has a high protection level and can be used in dusty, humid or oil droplet-invaded places, it does not mean that it can be immersed in water to work. It should be placed in a relatively clean environment as much as possible, keep the surface of the motor clean, and the air inlet should not be blocked by dust, fiber, etc. ‌2.Regular inspection‌: Regularly check whether there is fatal damage on the outside of the stepper motor and ensure that the connection is firm; check whether the output shaft of the stepper motor rotates smoothly; check whether the encoder connection line and the power connector are firmly connected; check whether the cooling fan is working properly; clean the dust and oil on the stepper motor in time‌.‌3.Load control‌: Ensure that the radial and axial loads added to the stepper motor shaft are controlled within the specified values ​​of each model. The use of flexible couplings can reduce radial loads and avoid excessive bending loads that cause damage or wear to the shaft ends and bearings‌.‌4.Installation precautions‌: When installing or removing coupling components, do not hit the shaft end directly with a hammer to avoid damaging the encoder. Ensure that the shaft end is aligned to the best state to avoid vibration or bearing damage‌.‌5.Cable protection‌: Ensure that the cable is not subjected to torque or vertical loads due to external bending forces or its own weight, especially at the cable outlet or connection. In the case of a moving stepper motor, the cable should be firmly fixed to a stationary part and extended with an additional cable installed in a cable support to reduce bending stress‌.‌6.Bearing maintenance‌: When the life of the stepper motor bearing ends, the vibration and noise of the motor will increase significantly. When the radial clearance of the bearing reaches a certain value, the bearing should be replaced.‌7.Thermal protection‌: When the thermal protection of the motor is continuously activated, it should be found out whether the fault comes from the motor or the overload or the setting value of the protection device is too low. The motor can only be put into operation after the fault is eliminated.‌

  2024.11.21

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  Common fault types and solutions of DC gear motors

  1.Definition of DC gear motors​DC gear motors​ are motors that convert DC electrical energy into mechanical energy, using a gear reduction device to reduce the speed and increase the torque. The structure of a DC motor is mainly composed of two parts: the stator and the rotor. The gap between the stator and the rotor is filled with permanent magnets. When the motor is powered on, the magnetic field of the permanent magnet interacts with the magnetic field generated by the current to generate torque, causing the motor to rotate.​​2.Working principle of DC gear motorsDC gear motors are based on ordinary DC motors, with a matching gear reducer. The function of the gear reducer is to provide lower speed and greater torque. Different reduction ratios can provide different speeds and torques to meet different application requirements. This design has greatly increased the utilization rate of DC motors in the automation industry. Specifically, the stator of a DC gear motor is used to generate a magnetic field, while the rotor rotates in the magnetic field to convert electrical energy into mechanical energy. The gear reducer increases the torque of the output shaft by reducing the speed of the rotor, so that the motor can still provide sufficient torque at low speeds. This design makes the DC gear motor perform well in application scenarios that require high torque and low speed, such as automation equipment, industrial robots and other fields.3.Common faults of DC gear motors1.Armature winding grounding faultArmature winding grounding is one of the common faults of DC motors, which usually occurs at the slot or the bottom of the slot. It can be detected by insulation resistance meter or calibration lamp method. If the grounding point is outside the slot or at the end of the commutator segment and the winding lead, it can be solved by strengthening insulation treatment or replacing insulation material. If the grounding point is in the core slot, it may be necessary to remove and rewind the armature winding.2.Armature winding short circuit faultArmature winding short circuit can cause serious heating of the motor and even burn the motor. The short circuit of individual coils can be solved by strengthening insulation treatment, while for serious short circuit faults, the faulty coil needs to be removed and rewound. When repairing, the damaged coil can be repaired by strengthening insulation treatment or local repair method.3.Bearing failureBearings are parts that are easily worn in DC motors. Common faults include excessive wear, noise, vibration, etc. When checking the bearing, you can judge whether it is normal by hearing. If wear or noise is found, the bearing needs to be replaced in time, and ensure that the model and specification of the new bearing are correct.4.Gear failureGear failures include shaft bending, journal wear, shaft cracks, etc. For slight shaft bending, it can be repaired by grinding and adjustment; for severe journal wear, it can be repaired by plating or polishing after surfacing; for shaft cracks or fractures, it is necessary to decide whether to replace the parts according to the degree of the crack.4.Application fields of DC gear motors1.In the field of industrial production, DC gear motors are widely used in machine tools, fans, pumps, printing equipment, metallurgical equipment, chemical equipment, food processing equipment, textile machinery, etc. Due to its large torque, stable speed and easy control, DC gear motors are particularly suitable for some production occasions with high process requirements.2.In the field of transportation, DC gear motors are used in vehicles such as electric vehicles, electric vehicles, and electric bicycles to provide high torque and high efficiency power output, which is particularly suitable for transportation vehicles that run for a long time. In addition, DC gear motors are also used to control vehicle speed, start and brake in transportation tools such as railways, subways and trams.3.In the field of household appliances, DC gear motors are used in washing machines, refrigerators, fans, televisions, air conditioners, vacuum cleaners and other equipment. Compared with AC motors, DC gear motors have the advantages of high efficiency, low noise and long life, which can meet the requirements of motor speed of different household appliances.4.In the field of medical equipment, DC gear motors are used in medical equipment such as X-ray machines, CT scanners and surgical drills. Due to its adjustable speed, stable operation and low noise, DC gear motors can meet the high requirements of medical equipment for motor drive.In addition, DC gear motors are also used in automation control systems, robotics, precision instruments and various portable devices. Due to its simple structure, high efficiency and fast response speed, DC gear motors play an important role in these fields.Source:​https://www.deviantart.com/oahaue9/journal/Common-fault-types-and-solutions-of-DC-gear-motors-1108095335​

  2024.10.09

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  Servo motor usage steps and control mode

  1.Working principle of servo motorThe working principle of ​servo motor​ is mainly based on the input control signal, driving the servo motor through the servo controller, and then outputting motion. The servo system consists of a servo motor, a servo controller and a feedback device. It is an automatic control system that aims to enable the output controlled quantity such as the position, orientation, and state of the object to follow any change of the input target (or given value). The working principle of the servo motor can be summarized as follows: when the servo motor receives a pulse signal, it will rotate a corresponding angle to achieve precise displacement control. This is because the servo motor has the function of sending pulses, and each rotation angle will send a corresponding number of pulses. This feature enables the servo motor to convert the voltage signal into two forms of torque and speed to drive the control object.​​​​2.Steps to use servo motor1.Install the servo motor: First, it is necessary to adjust and install it according to the characteristics of the servo motor and the use environment. During installation, it is necessary to pay attention to the coordination of the motor and the transmission device, and ensure the accuracy and reliability of the transmission device.2.Connect the servo motor and the driver: Next, you need to connect the servo motor and the driver and connect them correctly according to the driver's instructions. When connecting, you need to pay attention to the order and method of wiring to avoid wiring errors that may cause motor damage or safety accidents.3.Debugging the servo motor: After completing the motor connection, you need to debug the servo motor. The purpose of debugging is to determine the maximum speed, maximum torque, acceleration, deceleration and other parameters of the servo motor, and set them according to actual needs. Pay attention to safety during debugging, especially when operating at high speed, high torque or high acceleration.4.Control the servo motor: After debugging, you need to control the servo motor. The control methods of the servo motor include position control, speed control and force control, which need to be selected and set according to actual needs and the characteristics of the controller.5.Maintain the servo motor: During use, the servo motor needs to be regularly maintained and serviced to ensure its performance and reliability. Maintenance includes cleaning, lubrication, adjustment and replacement of parts.3.Control mode of servo motor1.Position control mode: The main goal is to make the motor shaft reach the predetermined position. In this mode, the controller calculates the required position deviation based on the given position command and the actual position of the motor, and then eliminates this deviation by adjusting the running state of the motor until the motor shaft reaches the predetermined position. The core of the position control mode is the position closed-loop control system, which is widely used in situations where precise positioning is required, such as CNC machine tools, robot joints, automated assembly lines, etc.‌2.Speed ​​control mode: The goal is to make the motor shaft run at a constant or variable speed. In this mode, the controller calculates the required speed deviation based on the given speed command and the actual speed of the motor, and then eliminates this deviation by adjusting the running state of the motor until the motor shaft reaches the predetermined speed. The core of the speed control mode is the speed closed-loop control system, which is used in applications that require precise speed regulation, such as conveyor belts, textile machinery, fan control, etc.‌3.Torque control mode: The output torque is constant. For example, in a CNC wire cutting machine, the speed and torque of the cutting machine can be kept constant to complete mechanical processing. The torque control mode sets the size of the motor shaft's external output torque through external analog input or direct address assignment. This mode is very useful in applications that require constant torque output, such as feed shafts on machine tools.4.Key points for extending the service life of servo motors‌1.Waterproof, moisture-proof, and humidity-proof: The servo motor does not have a waterproof structure, so special attention should be paid to waterproof, moisture-proof, and humidity-proof. Avoid installing it in an indoor control panel exposed to rain and direct sunlight, and do not place flammable items around it.‌2.Avoid corrosive environments and flammable items: Avoid using servo motors in corrosive environments such as hydrogen sulfide, sulfurous acid, chlorine, ammonia, chlorinated gas, acid, alkali, salt, and flammable gas environments. At the same time, do not use servo motors near flammable materials, and place them in well-ventilated, dry, dust-free, and vibration-free places.‌3.Avoid using irritating cleaning agents: Do not use gasoline, thinners, alcohol, acidic and alkaline cleaning agents to clean servo motors to avoid discoloration or damage to the outer shell.‌4.Pay attention to the use environment‌: The use environment should be as clean as possible, avoid using it in places with heavy oil, dust and humidity‌.‌5.Regular maintenance‌: Regularly check the machine body and mechanical operation to ensure the normal operation of the motor‌.‌6.Avoid overload work‌: Pay attention to avoid overload work, observe the working condition of the motor, and prevent the motor from overheating.‌7.Objects cannot be covered on the machine body during operation‌: Objects cannot be covered on the machine body during operation to maintain good heat dissipation‌.‌8.Pay attention to installation and wiring‌: Before starting the servo motor, it is necessary to measure the insulation resistance, check whether the power supply voltage and motor wiring are correct, ensure that the power supply voltage meets the requirements, check whether the starting equipment is good, whether the fuse is suitable, whether the motor grounding and zero connection are good, and whether the transmission device is defective‌.‌9.Control speed and positioning‌: As a closed-loop feedback system, the servo motor achieves precise positioning and constant speed through a reduction gear set and a linear proportional potentiometer, and attention needs to be paid to the accuracy of speed control‌.Source:​https://www.deviantart.com/oahaue9/journal/Servo-motor-usage-steps-and-control-mode-1100084602​

  2024.09.18

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  Operating characteristics of brushless DC motors

  1.A brief introduction to brushless DC motorsA ​brushless DC motor​ (BLDC Direct Current Motor) is a synchronous motor that uses a direct current (DC) power supply. It is also called an electronically commutated motor (ECM or EC motor) or a synchronous DC motor. ‌This motor converts the DC power supply into a three-phase AC power supply through an inverter and is a permanent magnet synchronous motor with position feedback. The brushless DC motor uses an electronic commutator to replace the traditional mechanical commutator, so it has many advantages, such as high efficiency, low noise, long life and no sparks. The working principle of the brushless DC motor is to perform electronic commutation through built-in sensors and electronic commutators to eliminate the wear of the brushes and the noise generated by the contact of the brushes. This motor integrates the advantages of DC motors and AC motors, and has the good speed regulation performance of DC motors, as well as the simple structure, reliable operation and easy maintenance of AC motors.​​2.Control principle of brushless DC motors1.Electronic commutation‌: The brushless DC motor uses built-in sensors and electronic commutators for electronic commutation, which is to eliminate the wear of the brushes and the noise generated by the contact of the brushes. The controller provides direct current in all directions to convert the direction of the winding current and realize electronic commutation.2.Interaction between magnetic field and current: The brushless DC motor uses the interaction principle between the energized coil and the permanent magnet to achieve rotation. When the coils (stators) on both sides are energized, it can be seen from Ampere's law that the two energized coils will generate a magnetic field in the right direction. At this time, the permanent magnet (rotor) in the middle will try to make the direction of its internal magnetic induction line consistent with the direction of the external magnetic induction line, forming a shortest magnetic closed loop, so that the permanent magnet rotates clockwise.3.Three-phase star connection: The stator winding of the brushless DC motor adopts a three-phase star connection, plus a rotor position sensor. By switching the power-on sequence of the three-phase winding in a reasonable order, the rotor can be rotated with the magnetic field.4.The role of the controller: The controller plays a key role in the brushless DC motor. It adjusts the current direction and size in the stator winding in real time according to the rotor position signal through the control of the power electronic switching device, thereby accurately controlling the torque and direction of the motor.3.Design and research direction of brushless DC motors‌1.Selection of motor phase number, body structure, winding structure and slot-pole number combination: According to the design requirements of the drive motor, the motor phase number, motor body structure, winding structure and slot-pole number combination are first analyzed in detail. This step is to ensure the rationality and effectiveness of the motor design.2.Design of permanent magnet and air gap length: The permanent magnet and air gap length are designed through relevant formulas, which is a key step to ensure the performance of the motor.3.Calculation and determination of motor armature diameter, core length, stator structure and rotor structure: According to the design parameters, the motor armature diameter, core length, stator structure and rotor structure are calculated and determined, which is the basis for building the motor physical model.4.Finite element model establishment and characteristic analysis: A two-dimensional finite element model is established according to the design parameters, and no-load and load characteristic analysis is performed to verify the rationality of the design scheme.5.Multi-objective optimization: Genetic algorithm is used to optimize the motor for multiple objectives. The effectiveness of the optimization process is verified by comparing the efficiency, output power, loss, average torque, torque pulsation and cogging torque pulsation of the motor before and after optimization.6.Core loss model analysis: The core loss model is analyzed, and a core loss calculation model that considers alternating magnetization, rotating magnetization and harmonic magnetic field is used to accurately calculate the stator core loss.4.Operation characteristics of brushless DC motor1.Good external characteristics and high torque output at low speed: The design of brushless DC motor enables it to provide large starting torque at low speed, which is very important for applications that require fast start and response.2.Wide speed range and full power operation: No matter what speed the motor runs at, the brushless DC motor can maintain full power operation, which makes it perform well in application scenarios with large speed changes.3.High efficiency and strong overload capacity: Brushless DC motors have high efficiency and strong overload capacity, which is particularly important in traction systems, and can ensure efficient operation and strong load capacity of the system.4.Good regenerative braking effect: Since the rotor of the brushless DC motor is made of permanent magnet material, the motor can enter the generator state during braking to achieve energy recovery, which is of great significance for energy saving and safety.5.Small size and high power density: The design and manufacturing technology of the brushless DC motor makes it smaller and has higher power density, which is very beneficial for space-constrained applications.6.High reliability: The fully enclosed structure can effectively prevent dust from entering the motor and improve the reliability and durability of the motor.7.Simple drive control: Compared with asynchronous motors, the drive control of brushless DC motors is simpler, which reduces the complexity and maintenance cost of the system.8.Large speed regulation range and easy to achieve variable frequency speed regulation: The brushless DC motor has a large speed regulation range and is easy to achieve variable frequency speed regulation to meet application scenarios with different speed requirements.9.Strong anti-interference ability: Due to its compact structure and small inductance, radio frequency interference and other electrical oscillations are not easy to occur, which improves the stability and versatility of the system.10.High operating stability: It is not very sensitive to changes in ambient temperature and will not be affected by temperature changes, ensuring the stability of motor operation.

  2024.08.29

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  Material requirements and specific classification of stepper motor encoders

  1.What is a stepper motor encoderA ​stepper motor encoder​ is a device used to test speed and positioning, usually installed on the rear end shaft of a stepper motor. Its main function is to be used with a stepper motor. As a feedback system, it detects the angular displacement or linear displacement of the stepper motor and converts it into electrical signals, and then feeds these signals back to the control system, such as a digital control group computer, a programmable controller, etc. By processing the electrical signals, the control system can achieve precise control of the stepper motor.​​2.Functions of stepper motor encoders1.Measuring positionThe most basic function of a stepper motor encoder is to measure the position of the motor. As a limited displacement motor, the position of the stepper motor is determined by each step of the stepper motor. The encoder can accurately calculate the current position of the motor. The principle of the encoder is to measure the rotation angle of the motor by processing the photoelectron signal, thereby calculating the position of the motor.2.Measuring speedIn addition to measuring position, stepper motor encoders can also be used to measure the speed of the motor. The encoder calculates the speed of the motor by calculating the position change of the motor at each moment. For applications such as high-precision positioning, motion control, and adaptive control, the speed information of the motor is particularly needed to help the system adjust the control parameters in real time. By measuring the current speed, the next position can be accurately predicted, thereby improving the motion accuracy and positioning accuracy.3.Improve motion control accuracyThe encoder can improve the accuracy and stability of stepper motor motion control. By providing a deterministic feedback signal, the encoder can ensure accurate position control and eliminate errors caused by load changes or environmental factors in the motor. In addition, the encoder can also improve the motor's motion performance and reduce noise and vibration by providing more accurate speed feedback information.3.Material requirements for stepper motors1.Wear resistance: The stepper motor will perform repeated operations during operation, so wear resistance is a key factor in ensuring its functional stability and extending its service life. Wear-resistant materials can reduce the wear of the motor during operation, thereby maintaining its stable performance. ‌2.Smoothness: Smoothness is also an important requirement for the material of the stepper motor encoder. Smooth materials can reduce friction during motor operation, help reduce wear, and are also conducive to the use of lubricants, thereby extending the service life of the motor. ‌3.Anti-fatigue: Since the stepper motor will repeatedly perform the same action during use, anti-fatigue is the key to ensure that the motor meets the requirements in terms of use effect. Anti-fatigue materials can resist fatigue damage caused by repeated actions and maintain the performance and life of the motor.4.Specific classification of stepper motor encoders1.Photoelectric encoders use photoelectric sensors and encoder disks to measure the position and movement of the rotor. It senses the grating or encoding holes on the encoder disk through photoelectric sensors to measure the angle and position of the rotor. Photoelectric encoders are widely used in stepper servo motor systems that require high-precision position measurement. ‌2.Magnetic encoders use magnetic sensors and magnetic scales to detect the position and movement of the rotor. It uses the interaction between the magnetic strips on the magnetic scale and the magnetic sensor to achieve angle and position measurement. Magnetic encoders are suitable for stepper servo motor systems that have certain requirements for accuracy and stability. ‌3.Grating scale encoders are high-precision encoders, which are usually used in stepper servo motor systems with high accuracy requirements. ‌It uses the interaction between the grating texture on the grating scale and the photoelectric sensor to provide very accurate position measurement. ‌4.The magnetic scale encoder is a high-precision encoder based on magnetic technology. It uses the interaction between the magnetic texture on the magnetic scale and the magnetic sensor to provide high-precision position measurement. The magnetic scale encoder is particularly suitable for stepper servo motor systems that require extremely high accuracy and stability. ‌5.How to install the stepper motor encoder 1.Select the appropriate location: First, you need to select an appropriate installation location. Usually, the encoder is installed on the motor shaft to achieve real-time monitoring of the motor's rotational position. When selecting a location, you need to ensure that there is enough space between the encoder and the motor and that it can be installed securely. ‌2.Adjust the installation angle: During installation, you need to ensure that the relative angle between the encoder and the motor shaft is correct. This step usually requires the use of professional tools to ensure that the angle between the encoder shaft and the motor shaft is optimal. The correct angle is critical for accurate position feedback. ‌3.Connect the cable: Once the encoder is correctly installed on the motor, you need to connect the cable correctly. Make sure that the cable is securely connected and not damaged by external objects. ‌ Use professional cable clamps to avoid unnecessary downtime caused by cable failure. ‌4.Testing and calibration: After installation, testing is a critical step. Start the motor and monitor the signal output by the encoder to ensure that it accurately reflects the motion state of the motor. Depending on the specific installation location and requirements, some calibration work may be required to ensure that the encoder provides accurate feedback. ‌5.Regular maintenance and inspection: After the motor encoder is installed, regular maintenance and inspection are key to ensure long-term stable operation of the system. Regularly check whether the connection is firm, whether the cable is damaged, and whether the encoder is working properly.Source:​https://www.stepperyoyo.com/2024/08/material-requirements-and-specific.html​

  2024.08.14

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  Notes on permanent magnet stepper motors

  1. What is a permanent magnet stepper motor​Permanent magnet stepper motors​ are a special type of stepper motors, characterized by the use of permanent magnets in the rotor. The stator of this motor is stamped into claw-shaped tooth poles, while the rotor uses radial multi-pole magnetized permanent magnets. Permanent magnet stepper motors can be divided into 2-phase and 4-phase, with a smaller volume and step angle (such as 5.625°/7.5°/11.25°/15°), where the configuration of the rotor and stator can be that the stator is a coil and the rotor is a permanent magnet, or the stator is a permanent magnet and the rotor is a coil. The working principle of permanent magnet stepper motors is based on rare earth permanent magnet tiles. These motor rotors are processed into claw-shaped tooth poles by stamping dies, and use axial multi-pole magnetized rare earth permanent magnet tiles, which have lower costs. ‌​​​​2. Application scenarios of permanent magnet stepper motors1. In the industrial field, permanent magnet stepper motors are widely used in various equipment, such as CNC machine tools, packaging machinery, printing equipment, etc. Its precise motion control ability and strong torque output can achieve high-precision positioning and motion control, and improve production efficiency. ‌2. In the field of home appliances, permanent magnet stepper motors play an important role in home appliances such as washing machines, dryers, and microwave ovens, providing stable speed and rotation angle to achieve efficient energy conversion. ‌3. In the automotive field, permanent magnet stepper motors are used to control the movement of equipment such as car seat adjustment, wipers, and air conditioning dampers, providing higher accuracy and controllability, making the internal equipment of the car more intelligent and humanized. ‌4. In robotics technology, permanent magnet stepper motors are key components used to achieve accurate motion control and positioning of robots, complete complex tasks, and improve the level of automation. ‌3. Precautions for using permanent magnet stepper motors1. Preparation before operation: Check whether the appearance of the motor is intact, whether the installation foundation is firm and stable, ensure that the power connection is firm and reliable, and prepare necessary tools to avoid inconvenience during operation. ‌2. Start operation: Press the start button to observe whether the motor can start normally. After starting, closely observe the running status of the motor, such as whether the current, voltage, speed and other parameters are normal. At the same time, pay attention to whether there are abnormal sounds or vibrations, and record the running data for subsequent analysis and maintenance. ‌3. Monitoring during operation: Check the motor temperature regularly to ensure that it does not exceed the rated value; observe the vibration of the motor. If abnormal, stop the motor immediately for inspection; check the lubrication of the motor bearings, regularly add grease or replace lubricating oil; check whether the insulation resistance value of the motor meets the requirements. ‌4. Stop operation: Press the stop button to stop the motor, disconnect the power connection, and perform necessary maintenance. ‌5. Safety precautions: It is forbidden to touch the internal parts of the motor in the stopped state to avoid metal objects from entering the motor. ‌6. Environmental requirements: Avoid oil, dust and corrosive gases, ensure good ventilation of the driver, and prevent metal chips and dust from falling into the driver board to cause circuit short circuit or motor damage. ‌7. Correct wiring and controller settings: Correctly wire according to the model and usage requirements of the stepper motor, and set the drive current, pulse number and other parameters through the controller. ‌8. Protection measures: The stepper motor needs to avoid overload or short circuit during operation, and corresponding protection measures need to be installed, such as overcurrent protection, overheating protection, etc.Source:​https://olgana.pixnet.net/blog/post/158643055​

  2024.08.02

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  The difference between two-phase, three-phase and four-phase stepper motors

  1.Structural differencesThere are certain differences in the structures of two-phase, three-phase and ​four-phase stepper motors​.​​1.Two-phase stepper motors are the most basic stepper motors, usually composed of two sets of coils, namely phase A and phase B. The phase difference between these two sets of coils is 90 degrees. Two-phase stepper motors are generally simple in structure and cheap.​​​​2.Three-phase stepper motors are more complex than two-phase stepper motors, consisting of three sets of coils, namely phase A, phase B and phase C. The phase difference between these three sets of coils is also 90 degrees. The structure of three-phase stepper motors is relatively complex, but its output torque is greater than that of two-phase stepper motors.3.Four-phase stepper motors are an improved version of three-phase stepper motors, consisting of four sets of coils, namely phase A, phase B, phase C and phase D. Four-phase stepper motors have higher output torque and higher precision than three-phase stepper motors.2.Differences in working principlesThere are also certain differences in the working principles of two-phase, three-phase and four-phase stepper motors.1.The driving mode of the two-phase stepper motor is a single-phase switch, which only activates one set of coils at a time and changes the positive and negative polarity of the coils to drive the stepper motor to rotate.2.The driving mode of the three-phase stepper motor is a three-phase alternating current, which drives the stepper motor to rotate according to the size and phase difference of the current transmitted to the motor.3.The driving mode of the four-phase stepper motor is a four-phase alternating current, and the size and phase difference of the current can also drive the stepper motor to rotate.3.Differences in control methodsIn terms of control methods, two-phase, three-phase and four-phase stepper motors also have different characteristics.1.Since the structure and control method of the two-phase stepper motor are very simple, it is more convenient to control. Moreover, the two-phase stepper motor can easily perform well in low-speed motion.2.The three-phase stepper motor can achieve more complex acceleration and deceleration control. Therefore, the control accuracy of three-phase stepper motors is higher than that of two-phase stepper motors, and it is suitable for some application fields that require high-precision drive.3.Four-phase stepper motors can achieve more precise control, higher stability, and their electromagnetic interference is small, and they will not interfere with other electronic devices.4.Usage suggestionsChoose different types of stepper motors according to different application scenarios and needs.1.If you need low-cost, low-speed, and low-precision application scenarios, you can choose a two-phase stepper motor.2.If you are in an application scenario with higher speed, higher precision, and higher control flexibility, you can choose a three-phase stepper motor.3.If you need higher precision and stability, and can play a role without affecting other equipment, you can choose a four-phase stepper motor.In short, no matter which type of stepper motor you choose, we need to make reasonable purchases and uses according to our own needs and actual conditions.

  2024.07.26

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  The difference between two-phase, three-phase and four-phase stepper motors

  1.Structural differencesThere are certain differences in the structures of two-phase, three-phase and ​four-phase stepper motors​.​​1.Two-phase stepper motors are the most basic stepper motors, usually composed of two sets of coils, namely phase A and phase B. The phase difference between these two sets of coils is 90 degrees. Two-phase stepper motors are generally simple in structure and cheap.2.Three-phase stepper motors are more complex than two-phase stepper motors, consisting of three sets of coils, namely phase A, phase B and phase C. The phase difference between these three sets of coils is also 90 degrees. The structure of three-phase stepper motors is relatively complex, but its output torque is greater than that of two-phase stepper motors.3.Four-phase stepper motors are an improved version of three-phase stepper motors, consisting of four sets of coils, namely phase A, phase B, phase C and phase D. Four-phase stepper motors have higher output torque and higher precision than three-phase stepper motors.2.Differences in working principlesThere are also certain differences in the working principles of two-phase, three-phase and four-phase stepper motors.1.The driving mode of the two-phase stepper motor is a single-phase switch, which only activates one set of coils at a time and changes the positive and negative polarity of the coils to drive the stepper motor to rotate.2.The driving mode of the three-phase stepper motor is a three-phase alternating current, which drives the stepper motor to rotate according to the size and phase difference of the current transmitted to the motor.3.The driving mode of the four-phase stepper motor is a four-phase alternating current, and the size and phase difference of the current can also drive the stepper motor to rotate.3.Differences in control methodsIn terms of control methods, two-phase, three-phase and four-phase stepper motors also have different characteristics.1.Since the structure and control method of the two-phase stepper motor are very simple, it is more convenient to control. Moreover, the two-phase stepper motor can easily perform well in low-speed motion.2.The three-phase stepper motor can achieve more complex acceleration and deceleration control. Therefore, the control accuracy of three-phase stepper motors is higher than that of two-phase stepper motors, and it is suitable for some application fields that require high-precision drive.3.Four-phase stepper motors can achieve more precise control, higher stability, and their electromagnetic interference is small, and they will not interfere with other electronic devices.4.Usage suggestionsChoose different types of stepper motors according to different application scenarios and needs.1.If you need low-cost, low-speed, and low-precision application scenarios, you can choose a two-phase stepper motor.2.If you are in an application scenario with higher speed, higher precision, and higher control flexibility, you can choose a three-phase stepper motor.3.If you need higher precision and stability, and can play a role without affecting other equipment, you can choose a four-phase stepper motor.In short, no matter which type of stepper motor you choose, we need to make reasonable purchases and uses according to our own needs and actual conditions.

  2024.07.26

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  How to correctly select a DC worm gear motor

  1.Introduction to DC worm gear motorThe ​DC worm gear motor​ is a reduction motor, and its basic structure includes a worm, a worm wheel and a motor. The principle of this motor is to drive the worm wheel to rotate through the rotation of the worm, and the worm wheel outputs torque. Due to the high-speed rotation of the worm wheel and the efficient conversion of the worm, the motor can achieve the characteristics of large reduction ratio and large torque output.​​2.Factors to consider in selection1.Understand the application requirements: First, it is necessary to clarify what kind of equipment or system the motor will be used for. For example, if the motor will be used in smart car transmission, 5G communication equipment, smart robots and other fields, then there will be specific requirements for the performance, size, weight and safety of the motor. ‌.2.Consider the basic parameters of the motor: The parameters of the motor include rated power, voltage, current, speed, etc. These parameters need to be determined according to the specific application scenario. For example, if the application requires frequent speed adjustment, it may be more appropriate to choose a DC motor that can easily adjust the speed by changing the voltage. ‌3.Selection of worm gear motor: Worm gear motor is an important basic component of mechanical equipment. Its selection specifications are different from the design and selection methods of general reducers and custom reducers. General reducers are suitable for various industries, but the reduction can only be designed according to a specific working condition. Therefore, different correction factors need to be considered according to their respective requirements when selecting. Custom reducers are generally considered when designing. When selecting, it is sufficient to meet the requirement that the power used is less than or equal to the rated power of the reducer. ‌4.Consider the maintenance and cost of the motor: The structure of the DC motor is relatively complex, which may lead to an increase in the failure rate and relatively high maintenance costs in the later period. Therefore, when selecting a motor, it is necessary to consider the convenience of maintenance and the cost-effectiveness of long-term use. ‌5.Safety and reliability: For critical applications or occasions with high safety requirements, it is necessary to select motors with high safety and reliability. Worm gear DC reducer motors have the characteristics of smooth operation, low noise, and durability, and are suitable for applications with high requirements for performance and safety. ‌3.Parameter calculation1.Calculate torque: Calculate the motor output torque according to the load characteristics and the required reduction ratio.2.Calculate torque: Match the torque by selecting suitable worm gear and worm materials.3.Calculate transmission efficiency: The transmission efficiency of traditional worm gears is not high, generally less than 70%. The transmission efficiency can be improved by optimizing the design or selecting smooth rolling bearings.4.Notes1.Correctly select the motor: A motor that meets the use requirements should be selected. Generally, a motor with higher output torque and lower speed should be selected.2.Installation position: The appropriate installation position should be selected according to the use requirements to ensure the overall load balance and stability of the motor.3.Lubrication: After long-term use, the motor should be maintained and lubricating oil should be applied to the surface of the worm gear and worm to ensure the performance and life of the motor.4.Maintenance and use: The working condition of the motor should be checked regularly during use. If there is a problem, it should be repaired or replaced in time.In summary, through correct selection and reasonable use and maintenance, the dc worm gear motor can bring us efficient, stable and reliable output effects, bringing convenience to production and life.Source:​https://www.deviantart.com/oahaue9/journal/How-to-correctly-select-a-DC-worm-gear-motor-1075533225​

  2024.07.16

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  What is the role of the encoder of the stepper motor?

  1.What is a stepper motor encoder?The ​stepper motor encoder​, also known as a motor feedback device, is a device used to measure the rotation position and speed of a stepper motor. It usually consists of a photoelectric sensor and a code disk. When the stepper motor rotates, the code disk in the encoder rotates, and the photoelectric sensor converts the photoelectric signal into an electrical signal, which is then processed by the electronic circuit to output the corresponding rotation position and speed information.​​2.Why does the stepper motor need an encoder?1. Improve accuracy and performanceThe use of encoders can improve the rotation accuracy and performance of stepper motors. Since the positioning method of stepper motors is usually through open-loop control, the motor will rotate a certain angle according to the drive signal, but the actual rotation angle may be due to factors such as load and wear. The encoder can feedback the rotation position and speed information in real time, so that the control system can correct the error in time and improve the motion accuracy and control performance of the stepper motor.2. Reliability and stabilityThe stepper motor encoder has its own feedback function, so when dealing with abnormal situations such as sudden loads and power fluctuations, it can detect the actual operating status of the motor in time, making the system more stable and reliable.3. Encoder TypeStepper motor encoders are usually divided into two types: absolute encoders and incremental encoders.1. Absolute encoderAbsolute encoders can accurately locate the angle value of the motor. Even after the motor is powered off and restarted, the system can accurately identify the current position of the motor without the need for a reset operation. Therefore, they are usually used in situations where the motor control accuracy is required to be high.2. Incremental encoderIncremental encoders can measure the relative displacement and speed value of the motor rotation without the need for a reset operation. They are usually used in situations where the motor control accuracy is required to be low.4. SummaryThe function of the stepper motor encoder is to provide precise positioning and feedback information for the control system, which can not only improve the accuracy and performance of the stepper motor, but also improve the reliability and stability of the system. According to the actual control requirements, different types of encoders can be selected to achieve control of the stepper motor.

  2024.07.10

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  The role of stepper motor encoder

  1.The role of stepper motor encoderThe ​stepper motor encoder​ is a device used to measure the rotation position, speed and direction of the motor. It is usually composed of a rotary optical encoder, a photoelectric switch and a digital signal processor, which can measure and feedback the angle and speed of the motor rotation in real time. In the control system of the stepper motor, the encoder can be used in conjunction with the motor driver to feedback the motor rotation position and speed signals in real time according to the set motion path and speed, and control the motor's high-precision movement.​​2.Advantages of stepper motor encoders1.Improve accuracy and performance: Stepper motor encoders can improve the accuracy and performance of the motor, such as reducing the error of the stepper motor during movement, improving the rotation accuracy and stability of the motor, thereby achieving more precise motion control.2.Real-time feedback: The stepper motor encoder can measure the motor rotation position and speed in real time, provide accurate position feedback signals, help the motor control system to provide real-time feedback and adjustment, and ensure the accuracy and stability of the motor movement.3.Direction control: The stepper motor encoder can not only measure the position and speed of the motor, but also realize the direction control of the motor through the feedback signal, thereby achieving a more precise motion path and trajectory.4.Longer life: In some high-precision and frequent motion occasions, using the encoder to feedback the motor status in real time can greatly reduce the occurrence of mechanical wear and mechanical failure, thereby increasing the life of the stepper motor.3.ConclusionIn short, the stepper motor encoder plays a vital role in the stepper motor control system. By real-time feedback of motor status, direction and position information, more precise motion control can be achieved, the accuracy and performance of the motor can be improved, and the life of the motor can be increased. It is suitable for various precision machinery and automation control fields.Source:​https://www.deviantart.com/oahaue9/journal/The-role-of-stepper-motor-encoder-1070167308​

  2024.07.02

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  Working principle and advantages of brushless DC motor

  1.Working principle of brushless DC motorBrushless DC motor uses semiconductor switching devices to realize electronic commutation, that is, electronic switching devices are used to replace traditional contact commutators and brushes. It has the advantages of high reliability, no commutation sparks, low mechanical noise, etc., and is widely used in high-end recorders, video recorders, electronic instruments and automated office equipment.Brushless DC motor consists of permanent magnet rotor, multi-pole winding stator, position sensor, etc. Position sensing commutates the current of the stator winding in a certain order according to the change of rotor position (that is, detects the position of the rotor pole relative to the stator winding, and generates a position sensing signal at a certain position, which is processed by the signal conversion circuit to control the power switch circuit and switch the winding current according to a certain logical relationship). The working voltage of the stator winding is provided by the electronic switch circuit controlled by the output of the position sensor.Position sensors are of three types: magnetic sensitive, photoelectric and electromagnetic.In brushless DC motors using magnetic position sensors, magnetic sensor devices (such as Hall elements, magnetic diodes, magnetic diodes, magnetic resistors or special integrated circuits, etc.) are installed on the stator assembly to detect the changes in the magnetic field generated when the permanent magnet and rotor rotate.In brushless DC motors using photoelectric position sensors, photoelectric sensor devices are configured at certain positions on the stator assembly, and a shading plate is installed on the rotor. The light source is a light-emitting diode or a small bulb. When the rotor rotates, due to the effect of the shading plate, the photosensitive components on the stator will intermittently generate pulse signals at a certain frequency.In brushless DC motors using electromagnetic position sensors, electromagnetic sensor components (such as coupling transformers, proximity switches, LC resonant circuits, etc.) are installed on the stator assembly. When the position of the permanent magnet rotor changes, the electromagnetic effect will cause the electromagnetic sensor to generate a high-frequency modulation signal (whose amplitude varies with the rotor position).2.Advantages of brushless motors1.No brushes, low interferenceThe brushless motor removes the brushes. The most direct change is that there is no spark generated when the brushed motor is running, which greatly reduces the interference of the spark on the remote control radio equipment.2.Low noise and smooth operationThe brushless motor has no brushes, and the friction is greatly reduced during operation, running smoothly, and the noise will be much lower. This advantage is a huge support for the stability of model operation.3.Long life and low maintenance cost3.ConclusionWithout brushes, the wear of the brushless motor is mainly on the bearings. From a mechanical point of view, the brushless motor is almost a maintenance-free motor. When necessary, only some dust removal maintenance is required. With the downward trend of the cost of brushless controllers and the development and market competition of brushless technology at home and abroad, the brushless power system is in a stage of rapid development and popularization, which has also greatly promoted the development of model movement.Source:​https://blog.udn.com/e429c9a1/180760244​

  2024.06.27

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  Advantages of step angle of five-phase stepper motor

  1.OverviewA ​five-phase stepper motor​ is a motor that realizes rotor movement by changing the direction of the electromagnetic field. Its rotation position can be controlled by changing the current. It has the advantages of precise positioning and fast response, and is widely used in various automation control systems.2.Step angle of five-phase stepper motorCompared with ​two-phase stepper motors​, five-phase stepper motors have higher control accuracy. The step angle of two-phase hybrid stepper motors is usually 3.6 degrees and 1.8 degrees, while the step angle of five-phase hybrid stepper motors is further subdivided into 0.72 degrees and 0.36 degrees, which provides higher position control resolution and smoother motion control. In addition, there are high-performance five-phase stepper motors on the market, whose step angles can be smaller, such as 0.09 degrees, which further proves the advantages of five-phase stepper motors in precision motion control.High-performance five-phase stepper motors not only provide more options in step angle, but also show their unique advantages in application fields. For example, some high-performance five-phase stepper motors can set multiple step angles through the DIP switch, which is compatible with the step angles of two-phase and five-phase hybrid stepper motors. This flexibility enables the five-phase stepper motor to adapt to more different application scenarios and needs.3.The role of each part1.Rotor: It is the main moving part of the five-phase stepper motor. Its magnetic field will be affected by the magnetic field of the stator coil, so that it rotates in different directions.2.Stator: It is the static part of the five-phase stepper motor. The changes in its magnetic field and current will affect the position and speed of the rotor.3.Control circuit: It is the core part of the five-phase stepper motor, which controls the current of the stator coil so that the rotor position and speed are accurate.4.Power supply: Provide energy to the stator coil so that the stator magnetic field and coil current can work normally.In general, the five-phase stepper motor occupies an important position in the field that requires precision motion control with its higher control accuracy and smaller step angle. Whether it is machine tools, medical equipment or other precision instruments, the five-phase stepper motor can provide stable and reliable performance.

  2024.06.21

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  Technical parameters and applications of Nema17 stepper motor

  NEMA17 stepper motors are widely used in various applications that require precise motion control. This motor is favored for its small size, high performance, long durability, low noise and high efficiency. The base size of NEMA17 stepper motors is 42mm, and a variety of body thickness, lead screw and screw stroke are available for customers to choose freely to meet different application requirements.​​1.In terms of technical parameters, NEMA17 stepper motors usually have bipolar holding torque. For example, the M1173020 NEMA17 stepper motor provided by LAM Technologies has a bipolar holding torque of 0.28 Nm (39 oz-in), a moment of inertia of 34 g cm² (0.186 oz-in²), a length of 34 mm (1.34 inches), a weight of 240 g (8.47 oz), and a flange size of NEMA 17 inches 42.3x42.3mm (1.67 x 1.67 inches).2.In terms of application areas, ​NEMA17 stepper motors​ are widely used in medical equipment, semiconductor processing, valve control, X-Y worktables, handheld instruments, or anywhere precise linear motion is required. These motors provide small linear motion solutions for a variety of motion control applications.3.In terms of manufacturers, Italy's LAM Technologies is a manufacturer that has been in the market for more than 20 years and has a dominant position in the field of motion control. The NEMA17 series of products they provide include stepper motors, stepper drivers, power supplies, and kits to meet the needs of different customers.4.In terms of other features, the HT17-278 series NEMA17-sized high-torque 2-phase hybrid stepper motors provided by AMP in the United States have high-torque design, standard NEMA 17 size, dual-axis version, UL certification of the motor, encoder options, etc.In summary, NEMA17 stepper motors have become the first choice for many precision motion control systems due to their superior performance and wide range of applications.In summary, NEMA17 stepper motors have become the first choice for many precision motion control systems due to their superior performance and wide range of applications.Source:​https://www.steppernews.com/2024/06/technical-parameters-and-applications.html​

  2024.06.13

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  Advantages and Disadvantages of Hybrid Stepper Motors

  1.Advantages of Hybrid Stepper Motors1.High Accuracy: Hybrid stepper motors use precision manufacturing processes and advanced drive control technology, with very high precision and accuracy. It can achieve very high positioning accuracy and rotation angle control.2.High Torque: ​Hybrid stepper motors​ use a hybrid magnetic structure with high magnetic field strength and torque density. It can provide higher torque output under high load and low speed operation to meet more demanding working environment requirements.3.Quiet and Smooth: Hybrid stepper motors achieve fine-tuning movement and accurate speed control through drive control technology. It is not as noisy as traditional motors, but runs smoothly and quietly, suitable for working in noise-sensitive occasions.​​2.Disadvantages of Hybrid Stepper Motors1.High Heat: Hybrid stepper motors generate more heat during operation, and require a suitable heat dissipation system to discharge the heat, otherwise it will cause damage and failure.2.A large number of large components: Hybrid stepper motors use a hybrid magnetic structure, which requires a large number of magnets and coils, making their structure complex and manufacturing costs high.3.Difficulty in control: Hybrid stepper motors require precise control signals and drive circuits to achieve high-precision and high-speed motion. Therefore, it is more difficult to control than other types of motors.3.Applicable scenarios of hybrid stepper motorsSince hybrid stepper motors have the advantages of high precision, high torque, quietness and stability, they are suitable for many occasions, such as:1.Equipment that requires high-precision positioning, such as CNC machine tools and printing presses.2.Fields that require high-precision motion control, such as precision medical equipment, precision instruments, and optical equipment.3.Equipment that requires high-efficiency, high-precision, and high-torque control, such as robots and automated production lines.Source:​https://www.deviantart.com/oahaue9/journal/Advantages-and-Disadvantages-of-Hybrid-Stepper-Mot-1062485763

  2024.06.11

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  Learn the operation of stepper motor drivers

  1.DefinitionA stepper motor driver is an actuator that converts electrical pulses into angular displacement. A stepper motor and a ​stepper motor driver​ form a stepper motor drive system. The performance of a stepper motor drive system depends not only on the performance of the stepper motor itself, but also on the quality of the stepper motor driver. The research on stepper motor drivers is almost carried out simultaneously with the research on stepper motors.2.The main structure of the stepper motor driverCircular distributorGenerate the switching waveform signal processing of the motor in different states according to the requirements of the input signalPWM modulation of the switching signal waveform generated by the circular distributor and filtering and shaping of the related waveforms, driving stage: amplify the voltage and current of the switching signal to enhance the main switching circuitUse power components to directly control the phase windings of the motorProtection circuitWhen the winding current is too large, a shutdown signal is generated to shut down the main circuit to protect the motor driver and motor windingsSensorReal-time monitoring of the position and angle of the motor, and the device that transmits the signal back3.working principlesIts working principle can be summarized as the following steps:Receive and process pulse signals: The stepper motor driver first receives pulse signals from the controller, which determine the rotation angle and speed of the stepper motor.Convert current signals: The driver converts the received pulse signals into the current signals required by the stepper motor. In this process, the driver adjusts the output current size and direction according to the frequency and width of the pulse signal.Drive the stepper motor: The converted current signal is transmitted to the stepper motor, thereby driving the motor to rotate a fixed angle (step angle) in the set direction. By continuously receiving and processing pulse signals, the stepper motor can achieve continuous rotation.4.SummaryIn general, the working principle of the stepper motor driver is to convert the pulse signal of the controller into the current signal required by the stepper motor, thereby driving the stepper motor to rotate a fixed angle in the set direction. This conversion process enables the stepper motor to accurately control the rotation angle and speed, and is widely used in various automation control systems.

  2024.06.03

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  What is the composition and structure of the servo motor

  What is a servo motor? A servo motor is a type of ​stepper motor​ that can rotate with high precision. Usually, this type of motor consists of a control circuit that provides feedback on the current position of the motor shaft, which enables the servo motor to rotate with high accuracy. If you want to rotate an object at a specific angle or distance, use a servo motor. It is simply composed of a simple motor that operates through a servo mechanism. If the motor is powered by a DC power source, it is called a DC servo motor, and if it is an AC motor, it is called an AC servo motor.We will only discuss the operation of DC servo motors here. In addition to these main classifications, there are many other types of servo motors based on the type of gear arrangement and operating characteristics. Servo motors typically come with gear units, allowing us to achieve very high torque servo motors in a compact and lightweight package. Due to these characteristics, they are used in many applications, such as toy cars, remote-controlled helicopters, airplanes, robots, etc.​​The rated unit of servo motors is kg/cm (kilograms per centimeter), and most servo motors have a rated value of 3kg/cm, 6kg/cm, or 12kg/cm. This kilogram/centimeter tells you how much weight your servo motor can lift at a specific distance. For example, a 6kg/cm servo motor should be able to lift 6kg if the load is suspended 1cm away from the motor axis. The larger the distance, the smaller the bearing capacity.​​The position of the ​stepper servo motor​ is determined by electrical pulses, and its circuit is located next to the motor. The servo motor working mechanism consists of three parts: controlled equipment, output sensor, and feedback system. It is a closed-loop system that uses a positive feedback system to control the movement of the shaft, where the device is controlled by a feedback signal generated by comparing the output signal with the reference input signal. Here, the reference input signal is compared with the reference output signal, and the third signal is generated by the feedback system. The third signal serves as the input signal for the control device. As long as there is a difference between the generated feedback signal or the reference input signal and the reference output signal, this signal exists. Therefore, the main task of the servo mechanism is to maintain the output of the system at the desired value in the presence of noise.Related Articles: ​What do you know about the advantages of servo motors​Three control methods for servo motors​​

  2023.09.22

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  The main function of stepper motor driver subdivision

  1.Improve accuracyThe main significance of subdividing stepper motor drivers is to improve the accuracy of the motor. An undivided ​stepper motor​ is a discrete driving method that controls the number of steps the motor takes by changing the number of trigger pulses. At this time, the number of pulses required for each step of the motor is fixed, and the accuracy of this method is limited. After subdivision, the controller can subdivide each step into more microsteps, thereby improving the accuracy of the motor and enabling the stepper motor to achieve higher resolution and accuracy.2.Reduce noiseSubdivision of stepper motor drivers can also effectively reduce the noise during motor operation. When the motor is subdivided, the microsteps of each step are smoother and the pulse speed is slower, which can avoid high-frequency vibration and noise generated by the motor. In some mechanical equipment with high noise requirements, stepper motor subdivision drive can effectively reduce noise pollution and improve the user experience.​​3.Reduce vibrationSubdivision of ​stepper motor drivers​ can also effectively reduce vibration during motor operation, which is crucial for the normal operation of certain high-precision equipment. When an undivided stepper motor driver is running, the motor will experience obvious vibration, which is easy to cause damage to mechanical parts. After subdividing the motor, the amplitude and frequency of vibration are more stable, thereby extending the service life of mechanical equipment.4.Improve reliabilityThe micro step subdivision of stepper motor drivers can also effectively improve their reliability. Under subdivision control, the coordination between the motor and the controller is more precise, and the working stability of the motor is higher, thereby improving the service life and reliability of the motor. For application scenarios that require long-term continuous operation and high stability of motor drivers, subdivision driving of stepper motors is particularly important.​​5.Increase power outputIn some application scenarios that require high power output, subdivision of stepper motor drivers is also of great significance. For example, in equipment such as CNC machine tools, laser processing, and digital printers, high-precision machining or printing work needs to be achieved by precisely controlling the rotation of the motor. At this time, the stepper motor subdivision drive can provide greater current output, making the motor have higher performance.In summary, the significance of subdividing stepper motor drivers is very important, and it is widely used in many mechanical equipment that require high-precision, high stability, high reliability, noise reduction and vibration reduction. At the same time, subdividing stepper motor drives is also one of the development directions of stepper motor technology.

  2023.09.19

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  Common problems and solutions for hybrid stepper motors

  Although the structure and function of each ​hybrid stepper motor​ are different, the same method can be used to solve some common faults. Below is a summary of some common problems and solutions for hybrid stepper motors to share with everyone.Common problems and solutions for stepper motors:How to control the direction of the stepper motor?1.The directional level signal of the control system can be changed.2. The wiring of the motor can be adjusted to change direction, as follows:For two-phase motors, simply exchange the motor wires of one phase into the driver, such as A+and A- exchange. For three-phase motors, exchange the motor lines of adjacent two phases, such as A, B, and C three-phase, and exchange A and B two-phase.​​What are the classifications of hybrid stepper motors?Answer: Various types of stepper motors can be provided. including basic, encoder, IP65, integrated with drive and controller, brake, and deceleration models.Motor malfunction:The motor is the core component of the mixer, and common motor faults include difficulty starting, overheating, and high motor noise. The causes of these faults may be motor damage, unstable power supply voltage, or aging of insulation materials inside the motor. The methods to solve these faults include replacing the motor, checking and adjusting the power supply voltage, and regularly checking the insulation performance of the motor.Bearing failure:The bearings of the mixer are key components supporting the main shaft, and common bearing failures include overheating and short bearing life. The causes of these faults may be poor lubrication, bearing wear, or improper bearing installation. The methods to solve these faults include strengthening the lubrication of bearings, replacing severely worn bearings, and installing bearings correctly.​​​​How to select a stepper motor?Answer: To select a ​stepper motor​ correctly, it is necessary to consider factors such as torque, load, current, inertia, speed, accuracy, and clarify these elements of the stepper motor in order to select a suitable stepper motor for application.In addition to the above content, hybrid stepper motors have also begun to play an increasingly important role in the pharmaceutical industry. Improving the efficiency of mixer work and doing related maintenance and repair work is also crucial. Only by jointly improving product technology from multiple aspects can we truly ensure the high quality and efficient production of mixer products.Related Articles: ​What do you know about hybrid stepper motors​​Will hybrid stepper motors become mainstream in the future?​

  2023.09.13

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  How to distinguish different types of motors

  The difference between DC and AC motors:As the name suggests, Small DC Motor uses direct current as the power source, while AC motors use alternating current as the power source. of AC motors is complex, but their structure is relatively simple, and they are easier to maintain than DC motors.In terms of price, DC motors with the same power are higher than AC motors. Including speed control devices, the price of DC is higher than that of AC, but there are also significant differences in structure and maintenance. to the stable speed and precise speed control of DC motors, which cannot be achieved by AC motors, DC motors have to be used to replace AC motors under strict speed requirements. AC motor speed regulation is relatively complex, but it is widely used due to the use of AC power sources in chemical plants.The difference between synchronous and asynchronous motors:The rotation speed of the rotor is the same as that of the stator, which is called a synchronous motor.The difference between ordinary and variable motors:Firstly, it should be clarified that ordinary motors cannot be used as variable frequency motors.The frequency converter can generate varying degrees of harmonic voltage and current during operation, causing the motor to operate under non sinusoidal voltage and current. of the motor. The most significant one is the rotor copper loss, which will cause additional heating, reduce efficiency, and output power of the motor. The temperature rise of ordinary motors generally increases by 10-20%. converter ranges from several thousand hertz to more than ten thousand hertz, causing the stator winding of the motor to withstand a high voltage rise rate, which is equivalent to applying a steep impulse voltage to the motor,causing the insulation between turns of the motor to withstand a more severe test.When ordinary motors are powered by frequency converters, the vibration and noise caused by electromagnetic, mechanical, ventilation and other factors become more complex. , forming various electromagnetic excitation forces and increasing noise.

  2023.09.05

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