Working principle and usage precautions of commonly used stepper motors in trigger pump assembly machine series

Abstract: The trigger pump assembly machine series uses high-performance stepper motors as core actuators, ensuring a precise and efficient assembly process. However, during operation, the equipment may experience faults such as malfunctions, sudden stoppages, and decreased control accuracy. In these cases, a systematic investigation of the stepper motor and related drive system is necessary. This article details the operating principles of the stepper motors used in the trigger pump assembly machine and summarizes key usage precautions to help users improve the stability and service life of the equipment.

Article Content:
As a key drive component in the trigger pump assembly machine, the performance of the stepper motor directly impacts the overall operation of the entire machine. To ensure long-term stable operation, users should observe the following key points during operation:
1. The stepper motors used in the trigger pump assembly machine are suitable for low-speed operation. The recommended speed range is 150-450 RPM, with a maximum speed not exceeding 1000 RPM. Within this range, the motors offer high efficiency and low noise. If higher speeds are required, a reduction gear is recommended for optimal performance.
2. Avoid full-step operation as this can cause significant vibration, affecting assembly accuracy and equipment life. A sub-step drive mode is recommended to improve motion smoothness. 3. Motor selection and drive voltage must be properly matched: Except for nominal 12V motors, which can be operated directly with 12V, other motor models require a voltage tailored to the drive. Generally, 12V-24V DC is recommended for 42mm motors, and 24V-36V DC is recommended for 57mm motors. While non-standard drive voltages are possible for 12V motors, special attention must be paid to temperature control.
4. For loads with large moments of inertia, a motor with a larger frame size should be selected to ensure sufficient output torque and operational stability.
5. Under high-speed or high-inertia load conditions, the motor should not be started directly at operating speed; instead, a gradual frequency increase should be used to increase speed. This prevents step loss, reduces noise, and improves positioning accuracy.
6. For applications requiring high positioning accuracy, optimization can be achieved through mechanical deceleration, increasing motor speed, or selecting a high-resolution drive.
7. The motor should avoid operating in the vibration zone. If this is unavoidable, voltage and current adjustments or the addition of damping mechanisms can be used to improve operating conditions. 8. When the motor is running at low speeds below 90 RPM, a low-current, high-inductance, and low-voltage drive is recommended to improve operational smoothness.
9. When designing a system, the principle of selecting the motor first and the driver second should be followed. Also, ensure that the voltage range of the stepper motor driver covers the required operating voltage of the motor, with a certain margin.
In summary: Correct selection and proper use of stepper motors are key to ensuring stable operation of the trigger pump assembly machine. Users should select the appropriate motor model and driver configuration based on actual load requirements and operating environment characteristics, and follow the usage recommendations in this article to maximize equipment performance, minimize failure rates, and improve production efficiency.

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