在机械传动中,广泛采用渐开线花键连接,它具有自动定心的特性,其花键齿抗弯强度高、承载能力强、受力较均匀、使用寿命长、部件体积小。在我国的渐开线花键标准(GB1104-72)中规定了分度圆处压力角为30°,模数由0.5～10两个系列,优先采用第一系列,齿数范围由11到50。在汽车及工程机械中也有 In mechanical transmission, widely used involute spline connection, it has the characteristics of automatic centering, the flexural strength of its spline teeth, carrying capacity, more uniform force, long life, small parts. In China’s involute spline standard (GB1104-72) provides a sub-degree circle at a pressure angle of 30 °, modulus from 0.5 to 10 two series, giving priority to the first series, the number of teeth from 11 to 50. There are also cars and construction machinery