球笼式万向节接触应力的计算及球组节圆直径的优化设计

摘要

According to analysis on Hertz contact stress between two steel balls, the calculating equation of contact stress is deduced for steel balls, star - shaped sleeve and bell - shaped shell of rzeppa universal joint, and the optimal design of pitch diameter of ball set is carried out. The maximum contact stress is directly proportional to cube root of load is obtained, the optimized ball set pitch diameter coefficient K = 0.54 ～ O. 55.%根据2个钢球Hertz接触的应力分析,推导出球笼式万向节钢球与星形套和钟形壳接触的应力计算式,并对球组节圆直径进行了优化设计,得出钢球与星形套和钟形壳间的最大接触应力与载荷的立方根成正比,优化设计的球组节圆直径系数K=0.54～0.55.