Performance Criteria for High-Speed Crank-and-Rocker Linkages—Part II: Spherical Crank-and-Rocker Linkages

[+] Author and Article Information
H. Funabashi

Department of Mechanical Engineering, Tokyo Institute of Technology, Meguro, Tokyo, Japan

F. Freudenstein

Department of Mechanical Engineering, Columbia University, New York, N.Y.

J. Mech. Des 101(1), 26-31 (Jan 01, 1979) (6 pages) doi:10.1115/1.3454020 History: Received June 19, 1978; Online October 21, 2010


In Part I proportions were derived for high-speed plane crank-and-rocker mechanisms. In this part, the corresponding developments are given for spherical crank-and-rocker mechanisms. The ratios of the sine functions of the transmission angles and of the rocker accelerations—both at the dead-center positions—remain the static and dynamic performance criteria of the linkage. The results are illustrated by numerical examples, which show the influence of these ratios on the transmission-angle variation, rocker acceleration and the ratio of minimum to maximum link length.

Copyright © 1979 by ASME
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