齿侧间隙优化的双圆弧谐波齿轮传动动力学分析  

Analysis of Double-Circular-Arc Harmonic Gear Transmission Drive Dynamics with Gear Backlash Optimization

作　　者：沈云波[1] 贾婧瑜 支立辉 SHEN Yunbo;JIA Jingyu;ZHI Lihui(School of Mechatronic Engineering,Xi’an Technological University,Xi’an 710021,China)

机构地区：[1]西安工业大学机电工程学院,西安710021

出　　处：《西安工业大学学报》2021年第6期628-634,共7页Journal of Xi’an Technological University

基　　金：陕西省教育厅重点实验室科研计划项目(19JS036);陕西省一般基金项目(2018JM5046)。

摘　　要：为了优化谐波齿轮传动齿廓结构,减小谐波齿轮传动的齿侧间隙以提高啮合性能。在谐波齿轮传动齿廓优化设计的基础上,采用三维有限元轮齿动态接触分析的方法,建立了刚轮、柔轮以及波发生器构成的轮齿接触三维有限元分析模型,通过加载和运动实现各构件间的转速和转矩的传递,对谐波齿轮的柔轮进行了啮合仿真和动力学动态仿真分析,并对传动过程中柔轮齿根处应力应变规律进行了研究。结果表明:柔轮主要失效形式为齿根处的拉伸疲劳断裂,优化后柔轮齿根处的应力减小6%,承载能力明显提升。Optimizing the tooth profile structure of harmonic gear transmission and reducing the gear backlash to improve the meshing performance are the main ways to improve the dynamic characteristics of harmonic gear transmission.Based on the tooth profile optimization of harmonic gear transmission,a three-dimensional finite element analysis model consisting of a rigid wheel,a flexspline and a wave generator was established based on the constructed tooth contact analysis model.The transmission of speed and torque among the components was realized by loading and motion,and the meshing simulation and dynamic simulation analysis of the flexspline of the harmonic gear were carried out to study the stress-strain rules at the flexspline dedendum during the transmission process.The simulation results show that the main failure form of the flexspline is the tensile fatigue fracture at the dedendum,and the stress at the flexspline dedendum is reduced by 6%after optimization,and the bearing capacity is significantly improved.

关 键 词：齿侧间隙 齿廓 谐波齿轮 啮合仿真 

分 类 号：TH132.43[机械工程—机械制造及自动化]