球笼式等速万向节圆周间隙分析

Analysis on Circumferential Clearance of Rzeppa Constant Velocity Joint

针对球笼式等速万向节的结构与运动形式,建立了椭圆沟道截面圆周间隙的空间立体模型,推导了圆周间隙角θ在任意摆角和转角条件下的计算公式,使用Matlab软件研究了θ随摆角和转角变化的规律.结果表明:θ与椭圆沟道长、短半轴、钢球半径、钢球回转半径、偏心距、摆角以及转角有关,θ的6次波动是导致汽车行驶过程中振动和噪声的主要原因.

Based on structure and motion forms of rzeppa constant velocity joint,the three-dimensional model of circumferential clearance of elliptic section was established,and the formula of circumferential clearance angle（θ） at any swing angle and rotating angle was deduced,the changing law of θ with swing angle and rotating angle was obtained by using Matlab software.The results show that θ is related to the short and long half axle of the elliptical raceway,radius of steal ball,turning radius of steal ball,eccentricity,swing angle and rotating angle.The six fluctuations of θ lead to the vibration and noise during the travelling.