三叉杆-球笼式万向联轴器传动轴的运动仿真分析

Kinematic simulation analysis about the tripod-ball type universal joint drive shaft assembly

针对三叉杆-球笼式万向联轴器传动轴结构复杂,难以采用传统的图解法、解析法获得其运动规律的问题,采用Pro/E软件,在充分考虑各构件之间的相互约束关系的基础上,对三叉杆-球笼式万向联轴器传动轴整体进行了三维建模,仿真分析了传动轴中关键零件钢球的运动规律,得到了输入轴和中间轴分别在10°、20°和30°夹角下钢球中心的位移、速度和加速度等运动曲线。仿真结果表明,钢球随输入轴的等速回转做近似周期性的简谐运动,并且两个联轴器夹角越大,各运动参数波动的幅度也越大;该仿真结果为合理设计三叉杆-球笼式万向联轴器传动轴,有效解决其在应用中的摩擦、磨损、润滑问题打下了基础。

Aiming at the problem of it being difficult to obtain the movement law of the tripod-ball type universal joint drive shaft assembly bytraditional graphic or analytical method because of its complicated structure, its three-dimensional modeling was made and kinematic simula-tion analysis of the steel ball was completed by Pro/E software on the base of considering constraint relations among the links. The displace-ment curves, velocity curves and acceleration curves of the steel ball center were obtained when the angle between the input shaft and the in-termediate shaft was 10°, 20° and 30° respectively. The simulation results show that the steel ball do approximate periodic harmonic motionalong with the constant speed rotation of the input shaft. With the two joint angle increasing, the range of each motion parameter fluctuationsis also bigger. ,The simulation result has reference significance for reasonable design of the tripod-ball type universal joint drive shaft assemblyand can effectively solve the key technologies like friction, wear and lubrication in the automobile industry.