NONDIMENSIONAL ANALYSIS OF JUMP PHENOMENON IN FORCE-CLOSED CAM MECHANISMS

Date

1991-01-01

Author

Tümer, Sami Turgut
Ünlüsoy, Yavuz Samim

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The elasticity of the follower train and return spring dynamics are incorporated in a general nondimensional analysis for follower jump in force-closed cam mechanisms. The follower train is represented by a lumped single degree-of-freedom model, and the return spring is considered as a continuous element. Knowing the harmonic content of the forcing function, utilization of four-pole parameters enables a straighforward computational procedure to be developed for the determination of jump speed. For a typical case of simple harmonic motion cam, an analytical expression is derived for the minimum preset of return spring to prevent cam-follower separation in terms of four dimensionless parameters; namely, the speed, damping, elasticity and mass factors. The analytical procedure developed is used to study the relative importance of follower train and return spring parameters on the jump phenomenon. Jump characteristics of simple harmonic and cycloidal motions are compared for varying dwell-angles of a dwell-rise-return (D-R-R) cam.

Subject Keywords

Systems

URI

https://hdl.handle.net/11511/32242

Journal

MECHANISM AND MACHINE THEORY

DOI

https://doi.org/10.1016/0094-114x(91)90013-t

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

S. T. Tümer and Y. S. Ünlüsoy, “NONDIMENSIONAL ANALYSIS OF JUMP PHENOMENON IN FORCE-CLOSED CAM MECHANISMS,” MECHANISM AND MACHINE THEORY, pp. 421–432, 1991, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32242.