The reverse design method for cam contours and motion specification

In the view of the difficult problem to receive the original design of the cam and its follower motion specification, an efficient, rapid and accurate reverse design for cam mechanisms is provided. This paper does research on the motion specification of cam mechanisms through establishing mathematical model, motion simulation and analysis. Firstly, amends the measured parameters achieved by the CMM and works out the reverse equation of cam profile curve by the established mathematical model. Secondly, applying the revised parameters which works out by the reverse equation of cam profile curve and motion simulation to obtain the cam mechanism follower motion specifications. In order to verify the method of measurement and reverse of the motion specification of cam, a cylindrical cam is adopted as an example and PRO/E motion simulation is applied to achieve its kinematics analysis and motion specification. In the light of this experiment result, it proves that the motion specification of follower can be realized rapidly and accurately.