Gear system noise causes
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(1) The parameters of gear design are improperly selected, the degree of coincidence is too small, the profile of the tooth profile is improperly modified or not, and the structure of the gearbox is unreasonable.
(2) In the gear processing, the base section error and the tooth profile error are too large, the tooth side clearance is too large, and the surface roughness is too large.
(3) The wheel train and gear box are eccentrically assembled, the contact accuracy is low, the parallelism of the shaft is poor, the rigidity of the shaft, bearing and support is insufficient, the rotation precision of the bearing is not high, and the gap is not good.
(4) Input torque in other aspects. Fluctuation of load torque, torsional vibration of the shafting, balance of the motor and other transmission pairs, etc.