设计直动从动件盘形凸轮的新方法

提出了一种利用凸轮与从动件相对运动设计凸轮的新方法（简称相对运动法），该方法利用凸与从动件的相对速度确定盘形凸轮的压力角和轮廓，相对加速度确定凸轮曲率半径，基于从动件和支承绕凸轮轴线反转的模型，将从动件滚子轴线对凸轮的相对速度和相对加速度转变为绝对速度和绝对加速度，应用矢量法和从动件坐标系中的分量表达法，导出了滚子摆杆盘形凸轮机构的凸轮压力角，轮廓线方程和曲率半径的解析表达式，并通过CAD方法给出了设计实例。

A NEW APPROACH TO DESIGN OF DISK CAMS WITH RECIPROCATING ROLLER FOLLDWER

This paper proposed a new approach to design of disk cams,which is called Relative Motion Method (RMM).It develops the pressure angle,the shape of cams using the relative velocity of the follower with respect to the cam and the radius of curvature using the relative acceleration of the followers versus the cam for disk cam follower systems.As an examplpe of application of this method,the formulae of calculatign the pressure angle and the radius of curvature and designing the cam profiles for the cam follower systems with reciprocating roller follower are derived based on the reverse of the follower and frame about the cam axis which translates the relative motions of the follower respect to the cam into the absolute motions and the expression of the motions using vector method and components in special coordinates.Finally,examples are given by suing CAD program made with the derived formulae.