Cam and follower design

Synopsis A general background to the consideration of tribological factors in cam and follower design is presented as a prelude to the description of the development of computer software for the analysis of the lubrication of any cam and tappet form. Parametric studies of both centrally pivoted and end pivoted follower arrangements are detailed with variations in cam base circle radius, cam width, reciprocating mass, camshaft speed, spring rate and follower radius of curvature considered. The physical interpretation of observed tribological changes are discussed and the paper concludes with a demonstration of how the software can be used to enhance the predicted performance of a given cam and follower geometry through design changes.