内外花键间隙对行星轮系均载特性的影响分析

THE EFFECT OF CLEARANCE BETWEEN INTERNAL SPLINE AND EXTERNAL SPLINE ON LOAD SHARING CHARACTERISTICS OF A PLANETARY GEAR TRAIN

行星轮系的均载特性是其主要的性能指标之一。国内外多项研究指出,行星轮系中构件的浮动作用对于系统均载具有重要的影响。考虑太阳轮与输入轴的花键连接关系,模拟花键内外齿的摩擦和太阳轮的约束浮动,建立了输入轴花键对太阳轮的非线性支撑反力,以5行星轮传动系统为例,采用集中质量法计算了不同花键径向间隙下的系统均载系数,为行星轮系均载设计提供了依据。

The load sharing characteristics of a planetary gear train is one of its main performance.Many researches at home and abroad have shown that the floating effect of components in a planetary gear train has an important influence on load sharing characteristics of the system.In this paper,the relationship between sun gear and spline on the input shaft is considered.Also,friction of inner and outer teeth in splined connection as well as constraint floating of sun gear are simulated.The nonlinear opposite supporting force of the spline on the input shaft to the sun gear is established.Taken a 5-planetary gear transmission system as an example,its load sharing coefficients with different radial clearance of a spline are calculated by the lumped-mass method.The research result provides a basis for load sharing design of planetary gear trains.