New Methods for the Dynamic Analysis of Flexible Single-Input and Multi-Input Cam-Follower Systems

The need to limit system vibrations makes the dynamic behavior of flexib1e high-speed cam-follower systems (as well as other machines subject to periodic motion) an important topic in the design of any such system. Researchers have worked extensively on this subject since before the turn of the century, both to determine dynamic behavior, and to improve and control that behavior. The goals in these analyses are to: 1) predict when and if the follower jumps off the cam; 2) determine the cam contact forces; 3) determine the linkage forces; 4) establish the closing spring requirements; 5) determine the magnitude of any follower impact with its seat; and 6) help optimize the system's dynamic response. This paper provides the following: a brief review of the literature on the dynamic analysis of flexible camfollower systems; a recommended method for the analysis of such systems; and an extension of this analysis method to multi-input systems

[1]  F. Y. Chen.  Analysis and Design of Cam-Driven Mechanisms With Nonlinearities , 1973 .

[2]  David Allen Turcic,et al.  On the Periodic Response of Cam Mechanism With Flexible Follower and Camshaft , 1980 .

[3]  C. Mei,et al.  Analysis and design of multiple input flexible link mechanisms , 1970 .

[4]  N. Polvanich,et al.  Dynamics of High-Speed Cam-Driven Mechanisms—Part 2: Nonlinear System Models , 1975 .

[5]  Albert P. Pisano.  Coulomb Friction in High-Speed Cam Systems , 1984 .

[6]  Ferdinand Freudenstein,et al.  An Experimental and Analytical Investigation of the Dynamic Response of a High-Speed Cam-Follower System. Part 2: A Combined, Lumped/Distributed Parameter Dynamic Model , 1983 .

[7]  Albert P. Pisano,et al.  Coulomb Friction and Optimal Rocker Arm Ratio for High-Speed Cam Systems , 1986 .

[8]  Akira Shimizu,et al.  A Comprehensive Simulation of High Speed Driven Valve Trains , 1981 .

[10]  Delbert Tesar,et al.  Model Formulation of Complex Mechanisms With Multiple Inputs: Part I—Geometry , 1977 .

[11]  Thomas Dresner,et al.  The application of a two-input cam-actuated mechanism to variable valve timing , 1989 .

[12]  K. Itao,et al.  Polydyne Cam Mechanisms for Typehead Positioning , 1972 .

[13]  Delbert Tesar,et al.  Model Formulation of Complex Mechanisms With Multiple Inputs: Part II—The Dynamic Model , 1977 .

[14]  B. M Bahgat,et al.  ON THE PREVENTION OF SEPARATION IN HIGH SPEED FLEXIBLE CAM MECHANISMS , 1986 .

[15]  J. L. Wiederrich.  Residual Vibration Criteria Applied to Multiple Degree of Freedom Cam Followers , 1981 .

[16]  Ferdinand Freudenstein,et al.  The Development of a Predictive Model for the Optimization of High-Speed Cam-Follower Systems with Coulomb Damping Internal Friction and Elastic and Fluidic Elements , 1986 .

[17]  Bernard Roth,et al.  Dynamic Synthesis of Cams Using Finite Trigonometric Series , 1975 .

[18]  Philip Barkan.  Calculation of High -Speed Valve Motion with a Flexible Overhead Linkage , 1953 .