The main reasons for gear system noise are as follows:
(1) In terms of gear design, improper parameter selection, too small coincidence, improper or no modification of the tooth profile, and unreasonable gearbox structure.
(2) In terms of gear processing, the base joint error and tooth shape error are too large, the tooth side clearance is too large, and the surface roughness is too large.
(3) In terms of gear train and gear box, the assembly is eccentric, the contact accuracy is low, the parallelism of the shaft is poor, the stiffness of the shaft, bearing and support is insufficient, the rotation accuracy of the bearing is not high and the clearance is improper.
(4) Input torque in other aspects. Fluctuation of load torque, torsional vibration of shafting, balance of motor and other transmission pairs, etc.
