RV减速器摆线针轮传动机构轮齿承载接触分析

Gear Tooth Contact Analysis of Cycloidal Pinwheel Transmission Mechanism of RV Reducers

RV减速器摆线针轮传动机构的轮齿承载接触分析是进行该机构润滑分析的基础。为明确摆线轮齿与针齿、曲拐轴承滚针与内外圈之间的动态接触特性,基于摆线针轮传动机构啮合原理,分析了6种不同齿廓修形方式下的轮齿间隙及啮合点的运动学特性;结合静力平衡方程及变形协调条件,引入非线性赫兹接触刚度,建立了摆线针轮传动机构的三维动态承载接触分析模型,确定了含有初始间隙的轮齿受载变形,利用迭代法完成模型求解,明确了传动过程中轮齿及曲拐轴承滚针内外圈啮合处的时变受力特性。

The loaded tooth contact analysis of cycloid pin wheel transmission mechanism of RV reducers is the basis of lubrication analysis of the mechanism.To clarify the dynamic contact characteristics between the cycloidal gear teeth and the needle teeth,as well as between the roller needles and the inner and outer rings of the crankshaft bearing,based on the meshing principle of the cycloidal needle gear transmission mechanism,the kinematic characteristics of the gear tooth clearance and meshing points under six different tooth profile modifi⁃cation methods are analyzed;combining the static equilibrium equation and deformation coordination conditions,the nonlinear Hertz contact stiffness is introduced and a three-dimensional dynamic load-bearing contact analy⁃sis model of the cycloidal needle gear transmission mechanism is established.The load deformation of the gear teeth with initial clearance is determined,and the model solution is completed using the iterative method.The time-varying force characteristics at the meshing of the gear teeth and the inner and outer rings of the crankshaft bearing roller needles during the transmission process are clarified.