An algebraic formulation and experimental analysis of two circular-arc cams

摘要

In this paper we introduce the kinematic analysis of two circular-arc cams with profile design and experimental validation. In particular, an algorithm is proposed in terms of geometrical parameters and the cam profile, mainly for design purposes. Numerical examples are reported to prove the soundness of the proposed algorithm. Displacement, velocity and acceleration diagrams are obtained for the synthesized cam profile by means of equivalent slider-crank mechanisms, in order to derive a simple procedure for testing cam profiles with a low-cost test-bed. An experimental test-bed has been set up at the Laboratory of Robotics and Mechatronics in Cassino in order to validate the kinematic characteristics of the two circular-arc profiles so that the experimental results can be used also to test the profile quality.