柔性齿圈下的行星齿轮传动系统动力特性研究  

Study on Dynamic Characteristics of Planetary Gear Transmission System with Flexible Ring Gear

作　　者：陆春元[1] 焦洪宇 LU Chunyuan;JIAO Hongyu(School of Mechanical and Electrical Engineering,Suzhou Vocational University,Jiangsu Suzhou 215104,China;School of Automotive Engineering,Changshu Institute of Technology,Jiangsu Suzhou 215500,China)

机构地区：[1]苏州市职业大学机电工程学院,江苏苏州215104 [2]常熟理工学院汽车工程学院,江苏苏州215500

出　　处：《机械设计与制造》2024年第12期126-133,共8页Machinery Design & Manufacture

基　　金：2019年苏州市重点产业技术创新项目(SYG201939)—电动辅助转向系统用行星磁齿轮复合电机关键技术开发。

摘　　要：建立了计入内圈齿轮柔性的行星齿轮传动系统刚柔耦合动力学模型,考虑了时变啮合刚度和静态传输误差激励,采用龙格-库塔数值算法计算了行星齿轮传动系统的动态响应特性,研究了齿轮节线和齿根上的动态应力和变形分布。结果表明柔性内齿圈的降低了内齿圈与行星轮之间的动态负载分配系数,传动系统的负载特性得到了明显的改善。对于固定内齿圈,最大应力位于沿轴向的中点上,沿齿宽方向的动态变形最大值出现在齿面末端,动态变形从齿顶边缘到齿根边缘呈递减趋势。由于支承刚度较小,负载分配系数随厚度的增加迅速减小,且行星销的错位和静态传输误差对系统的负载分配系数产生负面影响。A rigid flexible coupling dynamic model of planetary gear transmission system with inner ring gear flexibility is established.Considering the time-varying meshing stiffness and static transmission error excitation,the dynamic response characteristics of planetary gear transmission system are calculated by Runge-Kutta numerical algorithm,and the dynamic stress and deformation distribution on gear pitch and tooth root are studied.The results show that the flexible inner gear ring reduces the dynamic load distribution coefficient between the inner gear ring and the planetary gear,and the load sharing performance of the transmission system is significantly improved.For the fixed inner gear ring,the maximum stress is located at the midpoint along the axial direction,and the maximum dynamic deformation along the tooth width direction appears at the end of the tooth surface,and the dynamic deformation shows a decreasing trend from the top edge of the tooth to the edge of the tooth root.Because the support stiffness is small,the load distribution coefficient decreases rapidly with the increase of thickness,and the dislocation of planetary pin and static transmission error have a negative impact on the load distribution coefficient of the system.

关 键 词：行星齿轮传动系统 柔性齿圈 动态响应 负载分配系数 

分 类 号：TH16[机械工程—机械制造及自动化] TH132.425