RV减速器核心零件模态分析  

Modal Analysis of the Key Components of RV Reducer

作　　者：孙永森 周燕飞[1] 杨潇 张翔[1] 夏天 Sun Yongsen, Zhou Yanfei ,Yang Xiao , Zhang Xiang, Xia Tian(College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics , Nanjing 210016, China)

机构地区：[1]南京航空航天大学机电学院,江苏南京210016

出　　处：《机械传动》2018年第5期135-138,共4页Journal of Mechanical Transmission

摘　　要：RV减速器传动精度主要受摆线针轮传动精度的影响,摆线轮和针轮的动力学状态直接影响到整机性能。以RV-40E减速器为研究对象,建立了摆线轮和针轮的三维模型,并利用有限元法进行模态分析,获得核心零件摆线轮和针轮两种工作状态下的各阶固有频率和振型。结果表明,摆线轮啮合频率在1 820 Hz时容易引起摆线轮和针轮的共振变形,摆线轮轮缘部分以及针轮与骨架油封连接的凸缘部分比较敏感,容易引起变形;增大针轮凸缘半径并在骨架油封外缘添加肋板可以提高针轮固有频率,避免共振;为摆线轮添加加强筋不能避开啮合频率;更换摆线轮材料,选择弹性模量更大的GCr15可以使摆线轮避开啮合频率,避免共振;优化后的摆线轮和针轮的模态分析结果为RV减速器的后续动力学分析提供了理论依据。The transmission accuracy of RV reducer is mainly affected by the precision of the cycloidal drive,and the performance of the whole machine is directly affected by the dynamics state of the cycloidal gear and the pinwheel. Taking the RV-40 E reducer as the research object,and the three-dimensional model of the cycloidal gear and the pinwheel is built. By using the finite element method,modal analysis is conducted to get the natural frequency and vibration mode at each order of the cycloidal gear and the pinwheel in two working conditions. The results show that it is easy to cause the resonance deformation of cycloid gear and pinwheel when the meshing frequency of cycloidal gear is 1 820 Hz. And that the flange part area of the cycloidal gear and the area connecting pinwheel with the skeleton oil seal are more sensitive to produce deformation. Increase the pinwheel flange radius and adding ribs out of the skeleton oil seal can improve the pinwheel natural frequency to avoid resonance. Adding ribs for cycloidal gear can＇t avoid the meshing frequency. Replacing the material of cycloidal gear and selecting the GCr15 with greater modulus of elasticity can make the cycloidal gear avoid the meshing frequency and avoid resonance. Modal analysis results of optimized cycloidal gear and pinwheel provide a theoretical basis of the following dynamics analysis of RV reducer.

关 键 词：RV减速器 模态分析 有限元法 

分 类 号：TH132.46[机械工程—机械制造及自动化]