摆线针轮行星传动机构啮合特性分析  

Meshing characteristic analysis of cycloid pin gear planetary transmission mechanism

作　　者：陈振宇[1] 沈兆光[1] 杨玉虎[1] 

机构地区：[1]天津大学机构理论与装备设计教育部重点实验室,天津300072

出　　处：《机械设计》2015年第10期9-14,共6页Journal of Machine Design

基　　金：国家高技术研究发展计划(863计划)资助项目(2011AA04A102)

摘　　要：以摆线针轮行星传动机构为对象,采用反转法建立了摆线齿廓方程,推导出针齿与摆线轮齿廓间压力角的计算公式,分析了几何参数对压力角的影响规律。在此基础上,针对该机构多齿啮合的结构特点,分析了摆线轮与单齿、多齿啮合时压力角随曲柄轴转角的变化规律,探讨了摆线轮与单齿、多齿理想啮合,以及考虑几何误差和构件弹性时机构压力角的计算方法。算例结果表明:考虑针齿实际啮合状态时计算压力角能够较精确地揭示机构的传力特性。该种计算方法可为摆线针轮行星传动机构的静力学分析及强度设计提供借鉴。Taking cycloid pin gear planetary transmission mechanism as the object, the tooth profile formula of cycloidal gear was established by adopting the inversion method. The calculation formula of the pressure angle between pinwheel and cycloid tooth profile was deduced. The influence law of geometric parameters on the pressure angle was analyzed. On this basis,according to the structural characteristics of multi-teeth meshing, the law of the pressure angle changing with the crank shaft angle was analyzed when the cycloid gear meshing with single tooth or multi-teeth. The ideal meshing of cycloid gear meshing with single tooth or multi-teeth and the calculating method of the pressure angle were discussed when considering geometric errors and elasticity of components. The example results showed that the force-transfer characteristics of the mechanism could be revealed more precisely by calculating the pressure angle when considering real-time meshing state of the needle teeth. This calculation method could provide references for the statics analysis and strength design of the planet cycloidal pinwheel transmission mechanism.

关 键 词：摆线针轮行星传动机构 多齿啮合 压力角 传力特性 

分 类 号：TH132.4[机械工程—机械制造及自动化]