Abstract
This paper presents a general method for analyzing and designing cam mechanism which has a one-degree-of-freedom follower system. To improve the dynamic characteristics of the positioning system composed of cam mechanisms, the residual vibration amplitude must not change widely by the fluctuation of cam rise time. Dynamically ideal cam can be obtained by determining the contour to have a desired characteristics curve, which show the relation between vibration amplitude and cam rise' time. Herein the design method of cam contour is described by which the residual vibration are reduced to desired small amplitudes at plural arbitrarily chosen rise times taking into account of viscous damping. By this method a stable cam at high speed can be obtained. Then the cam profile which extinguishes the vibrations at N arbitrarily chosen rise times is determined by (2N+5) power polynomials.
Moreover a method to extinguish the vibrations at plural arbitrarily chosen rise times, even if the follower is viscous damped, is described. These theoretical results are verified by some experiments.
