Chengming Machinery Co., Ltd.


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Overview of planetary reducer disparity shaft solution

Edit: ChengMingRelease time: 2019-Feb-25

        When the assembly concentricity between the drive motor and the reducer is guaranteed to be good, the output shaft of the drive motor is only subjected to the rotational force (torque), and the operation is smooth and has no pulsation. At different times, the drive motor output shaft is also subjected to radial forces (bending moments) from the input of the reducer. The effect of this radial force will cause the drive motor output shaft to be forced to fold, and the direction of the bend will change as the output shaft rotates.

        If the deviation of the concentricity is large, the radial force causes the temperature of the motor output shaft to rise, and the metal structure is continuously destroyed (vandalism), which will eventually cause the drive motor output shaft to be partially localized. Fatigue and break. The greater the error of the concentricity of the two, the shorter the time for the output shaft of the drive motor to break. At the same time that the output shaft of the drive motor is broken, the input end of the reducer (Retarder) also receives the radial force from the output shaft of the drive motor. If this radial force exceeds the maximum at the input of the reducer (Retarder) In the case of radial loads, the result will also cause deformation or even fracture of the input end of the reducer (retarder) or damage to the bearing at the input end.

        Therefore, it is important to ensure concentricity when assembling. Planetary gear reducer Compared with other reducers, planetary reducer has high rigidity, high precision (single level can be less than 1 point), high transmission efficiency (single stage is 97%-98%), high torque/volume ratio, Lifetime maintenance-free features. From the assembly process analysis (Analyse), if the drive motor shaft and the reducer (Retarder) input are concentric, the drive motor shaft surface and the reducer input end hole surface will be very consistent, and their contact surfaces are closely attached. There is no radial force and deformation space. If the assembly is not centered, there will be no matching or gap between the contact surfaces, and there will be radial force and space for deformation.

       Similarly, the output shaft also has a break or fold phenomenon for the same reason as the drive motor is broken. Planetary gear reducers are also known as planetary reducers and servo reducers. In the family of reducers, planetary reducers are widely used in servo systems, stepping motors, DC motors and other transmission systems due to their small size, high transmission efficiency, wide deceleration range and high precision. Its role is to reduce the speed increase torque and reduce the load/motor moment of inertia ratio under the premise of ensuring precision transmission. Gear motor

1、R series coaxial helical gear reducer is manufactured in accordance with international technical requirements and has high scientific and technological content.

2、save space, reliable and durable, with high overload capacity, power up to 132KW;

3、Low energy consumption, superior performance, and the efficiency of the reducer is over 95%;

4、Low vibration, low noise and high energy saving;

5、The high-quality forged steel material and the steel cast iron box are used, and the surface of the gear is subjected to high-frequency heat treatment;

6、After precision machining to ensure the parallelism of the shaft and the requirements of the positioning bearing, the reducer that forms the helical gear transmission assembly is equipped with various types of motors, which are combined into mechatronics, which fully guarantees the quality characteristics of the products. However, the output of the reducer (Retarder) is the product of the output and the reduction ratio of the drive motor. The output of the reducer is larger than that of the motor, so the output shaft of the reducer is more easily broken. Therefore, when using the reducer, the user should pay more attention to the concentricity assurance when assembling the output.