含侧隙摆线针轮啮合接触特性分析

Contact Characteristics Analysis of Cycloid-pin Wheel Transmission Incorporating Mesh Clearance

多齿对接触是摆线针轮传动的典型特征,其接触对的数量和分布对摆线针轮传动特性有重要影响。为分析侧隙对摆线针轮的多齿对接触及传动特性的影响,构建了考虑侧隙的摆线轮-针齿接触力分布及扭转刚度的计算模型,分析了侧隙、输入扭矩对啮合接触力峰值、分布区域以及扭转刚度的影响。研究结果表明,侧隙对摆线针轮机构的传动特性有显著影响,侧隙越大,导致承栽的接触对减小,嗤合力峰值增大,但扭转刚度会显著减小;输入扭矩增大会导致承栽接触对增多,使扭转刚度略有增大;曲柄输入廣度的变化对扭转刚度的影响不大。上述模型可为考虑侧隙的摆线针轮传动机构设计分析提供参考。

Multi-tooth pair contact is a typical characteristic of a cycloidal drive,and the number and distribution of its contact pairs have an important influence on the drive characteristics of the cycloidal drive.In order to analyze the influence of mesh clearance on the multi-tooth pair contact and transmission characteristics of the cycloid-pin drive,an analysis model of contact force distribution and torsional stiffness considering mesh clearance is constructed,and the influence of clearance and input torque on the peak and distribution area of the meshing contact force and torsional stiffness is analyzed.The results show that the clearance has a significant effect on the transmission characteristics of the cycloidal drive.The larger the clearance is,the smaller the load-bearing contact pairs will he,and the peak engagement force will increase,but the torsional stiffness will he significantly reduced;the increase in input torque will lead to more load-bearing contact pairs and a slight increase in torsional stiffness;the change in crank input angle has little effect on the torsional stiffness.The above model can provide a reference for the design analysis of the cycloidal drive mechanism considering mesh clearance.