计算分度圆齿厚S1,S2; 角度 INVα tgα cosα 20 0.015 0.364 0.94 18.5 0.012 0.335 0.948 24.4 0.028 0.454 0.9191 28.5 0.046 0.543 0.879相关知识点: 试题来源: 解析 解: 1)i12 = z2 /z1 =2 z1 =14 2)r1 =1/2 mz1 =21mm r2 =1/2 mz2 =42mm 3)cosα’=a/a’cosα=63/65 cos20...