关键词: 内齿行星齿轮减速器, 集总参数法, 三轴式, 固有频率, 动力学响应

Abstract:

Considering the meshing stiffness and damping of the gear pairs and stiffness of the bearings, the dynamics governing equations of an inner planetary gear reducer with three axes were established based on the lumped mass method. According to the different constructions, which have different numbers of inner planetary gears, the natural frequency and mass unbalance response of the reducer were investigated. It is found that the natural frequency of the reducer with different numbers of inner planetary gears has almost the same frequency value. Mass unbalance force can result in bending vibrations and twisting vibrations. When the reducer has three inner planetary gears, its dynamics characteristics will be improved.

Key words: inner planetary gear reducer, lumped mass method, three axes, natural frequency;dynamics response