In this paper, the method of apptoaching cycloidal gear protile by doublecircle fitting. is Plesented, so more accurate calculation can be got with given precision so as toProgram and machine easily.

• 本文提出用双圆弧拟合逼近摆线轮齿形的方法；从而可在给定精度的情况下更精确地进行计算，并便于编程加工。