(A) the reducer gear machining error on the impact of noise. Reducing and controlling the gear noise is the fundamental to reduce the gear noise of the gear motor. In order to reduce the gear noise, need to consider from structural design and gear precision two respects.
     1, low-noise gear design requirements. The design of gear structure is very important to the noise. The ideal design is to improve the bending strength of the tooth as much as possible, to select the larger displacement coefficient and the appropriate helix angle so as to increase the meshing coefficient, so as to reduce the noise. .

     2, reducer gear manufacturing accuracy of the impact of noise. For the standard series gear reducer motor, the gear reducer gear manufacturing accuracy determines its noise value. Gear reducer motor gear is the main role is to transmit speed and torque, so its gear manufacturing accuracy requirements, the work of the level of stability is the main. The gears with high working smoothness grade not only have long service life, but also have small impact, vibration and noise in the drive. Therefore, it is the key to reduce the noise of the gears.

     (B) the impact of the work of stationary accuracy of noise. The accuracy of the work of the gear reducer gears is required to limit the instantaneous gear ratio changes, the error is a turn of the wheel several times per revolution error, which makes the gear in the meshing process of impact, vibration and thus produce gear noise, it Is a high-frequency impact sound. For a gear, the factors that affect the smoothness of the work of his section of the error and its involute tooth profile error.

     (C) reducer gear contact accuracy of the impact of noise. Evaluation of the gear contact accuracy is a comprehensive indicator of contact spots, bad contact with the noise of the gear will be large. The causes of gear contact are as follows: the tooth direction error affects the tooth length direction contact, the base section deviation and the tooth shape error affect the tooth height direction contact.

     (D) the gear reducer movement accuracy of the impact of noise. Gear reducer gear movement accuracy is the accuracy of the transmission movement, that is, each revolution of the gear wheel angle error maximum error value can not exceed a certain limit. Since the accuracy of gear movement is large periodicity (gear rotation one week) error, and by the gear ring gear radial runout in the gear rotation within one week of Zhou Jie cumulative error will produce low-frequency noise, but when the accumulated week error increases, will cause Gear meshing impact and angular velocity changes, this time the noise increased significantly and issued a "rumbling" sound.

     (E) the eccentric bias on the impact of noise. It is a kind of alternating stress, which can cause vibration of the train wheel and produce noise. Therefore, it is necessary to carry out the dynamic balance detection of the wheel body of the gear reducer, which is caused by the unbalanced centrifugal force in the meshing operation.