The problem of shaft breakage in the reducer is nothing more than two aspects: one is the breakage of the output shaft of the drive motor and the breakage of the output shaft of the reducer.





The breakage of the output shaft of the drive motor is mainly due to the shaft breakage problem caused by the misalignment of the drive motor and the reducer during assembly. When the planetary reducer breaks suddenly during normal operation, carefully observe the cross section of the broken output shaft of the drive motor, you will It can be found that the outer ring of the broken shaft is very bright, and the color becomes darker as it gets closer to the shaft center, and finally to the shaft center, there are broken marks, generally in the form of dot marks. Therefore, this situation must be caused by the different installation and matching of the drive motor and the reducer.


The output shaft of the reducer is broken, or it is because when the planetary reducer is selected, it is mistakenly believed that as long as the rated output torque of the selected servo planetary reducer meets the working requirements, this is actually wrong. When selecting the model, the rated output torque of the drive motor should be multiplied by the speed ratio. In principle, the obtained value should be smaller than the corresponding rated output torque provided by the reducer sample. In addition, when the instantaneous impact torque on the output shaft of the reducer exceeds twice the rated output torque, the shaft will also break.