Simplified design and evaluation of cam surfaces

A method is presented to determine the location and magnitude of cam profile errors. The impact of this method centers around the simplification of the design and evaluation of cam surfaces. The proposed technique can evaluate errors in newly machined or worn cams. Inputs are cam rotational speed and a set of theoretical data points, which lists cam radial displacement and acceleration versus angular position. A recursion formula for the cam profile errors is derived using a finite-difference scheme. Application of the method is discussed. A. H. Soni. Professor of Mechanical & Aerospace Engineering,David L. Smith, Research Associate at the Oklahoma State University, Still-water, Oklahoma.