Based on it,the method of using cycloid to approach involute was proposed to machine the back-angled shifterstops in the automobile synchronizer sleeves.

• 在阐述摆线旋分加工原理的基础上,提出用摆线逼近渐开线与旋分方法来加工汽车同步器齿套倒锥,并用摆线簇来提高逼近精度。