轮毂变形对星轮减速器啮合特性的影响研究  

Influence of meshing characteristics of star-gear reducer by deformation of the hub

作　　者：夏建芳[1] 刘董洋 何启成 高放军 XIA Jian-fang;LIU Dong-yang;HE Qi-cheng;GAO Fang-jun(School of Mechanical and Electrical Engineering,Central South University,Changsha,410012,China;Hunan Academy of Mechanical Science Co.,Ltd.,Changsha,410007,China)

机构地区：[1]中南大学机电工程学院,湖南长沙410012 [2]湖南机械科学研究院有限公司,湖南长沙410007

出　　处：《机电工程》2020年第10期1210-1214,共5页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51575533)。

摘　　要：针对轮毂变形会引起星轮减速器轮齿双侧接触的问题,对星轮减速器的行星齿轮轮毂上孔的尺寸对啮合特性的影响进行了研究。研究了在装配关系复杂且高度非线性的情况下星轮减速器的有限元仿真方法,在满足工程精度的前提下,对模型进行了简化,使用Abaqus软件构建了星轮减速器传动系统受载的有限元模型,在不改变轴的直径及轮毂上孔的分布直径的情况下,对行星齿轮轮毂上传动曲轴的轴承孔和直连轴孔分别缩小10%时,轮齿的接触情况进行了分析。研究结果表明:缩小轮毂上的孔径可以提高轮毂刚性,改善轮齿双侧接触现象;缩小直连轴孔的尺寸对轮齿双侧接触现象的改善效果更好;将两孔均缩小10%,可以完全消除轮齿双侧接触现象。Aiming at the problem of bilateral contact between the teeth of the star reducer caused by the deformation of the hub,the effect of the size of the hole on the hub of the planet gear of the star-gear reducer on the meshing characteristics was studied.The finite element simulation method of the star gear reducer under the condition of complicated assembly relationship and high nonlinearity was studied.The model was simplified under the premise of meeting the engineering accuracy,and the finite element model of the star-gear reducer was established by the software Abaqus.Under the premise of not changing the diameter of the shaft and the hole distribution on the wheel hub,the diameters of the bearing holes of the transmission crankshaft and the holes of the direct-connecting shaft on the hub of the planetary gear were reduced by 10%respectively,and the contact situations of the gear tooth were analyzed.The results indicate that reducing the diameter of the hole in the hub can improve the rigidity of the hub and improve the phenomenon of bilateral contact between the teeth.Reducing the size of the hole of the direct-connecting shaft has a better effect on improving the bilateral contact of the gear teeth.Reducing both holes by 10%can completely eliminate the bilateral contact of gear teeth.

关 键 词：星轮减速器 轮毂变形 有限元仿真 啮合特性 

分 类 号：TH132.41[机械工程—机械制造及自动化]