本文在传统图解法概念基础上,导出了按许用压力角确定推杆凸轮最小尺寸的一种计算机辅助数值解法。其特点是:在确定最小基圆半径时,推杆运动规律可以是各种运动规律的任意组合或改进型式,且无须涉及二阶导数的计算。从而克服了其它方法在求解该类问题时的局限性,同时便于编制成通用程序,避免了设计过程中的人为推导。 Based on the traditional concept of graphical method, this paper derives a computer-aided numerical solution to determine the minimum size of the push-rod cam according to the allowable pressure angle. Its characteristics are: in determining the minimum radius of the base circle, the law of the push rod can be any combination of motion law or improved type, and without involving the calculation of the second derivative. Thus overcoming the limitations of other methods in solving such problems, and at the same time facilitating the preparation of general procedures and avoiding the artificial derivation in the design process.