Approximate Circular and Straight-Line Path Generation With High-Performance Function-Generating Linkages

Certain manufacturing industries, including the semiconductor industry, are now moving toward very high-speed machinery requiring very small yet precise motions. The total path of a coupler point on harmonic motion-generating linkages, with relatively small input cranks, has been shown to be an appr...

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Published in:Journal of mechanical design (1990) 1989-06, Vol.111 (2), p.188-194
Main Authors: Mahyuddin, A. I, Nahvi, H, Farhang, K, Midha, A
Format: Article
Language:English
Subjects:
Applied sciences
Drives
Exact sciences and technology
Linkage mechanisms, cams
Mechanical engineering. Machine design
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container_title Journal of mechanical design (1990)
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creator Mahyuddin, A. I
Nahvi, H
Farhang, K
Midha, A
description Certain manufacturing industries, including the semiconductor industry, are now moving toward very high-speed machinery requiring very small yet precise motions. The total path of a coupler point on harmonic motion-generating linkages, with relatively small input cranks, has been shown to be an approximate ellipse. Such linkages have been described to possess superior performance qualities for high speed machine application. Two special cases of the elliptical path are circular and linear paths. An investigation of the kinematic equations, which govern the motion of a coupler point, reveal the nonexistence of such exact paths, prompting the two theorems with proofs forwarded herein. Linkages are synthesized in an effort to find coupler points which trace “near-circle” and “near-straight-line” entire paths. Some interesting results are obtained in studying the motion behavior of coupler points on such linkages.
doi_str_mv 10.1115/1.3258982
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ispartof Journal of mechanical design (1990), 1989-06, Vol.111 (2), p.188-194
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2161-9573
language eng
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source ASME Transactions Journals (Archives)
subjects Applied sciences
Drives
Exact sciences and technology
Linkage mechanisms, cams
Mechanical engineering. Machine design
title Approximate Circular and Straight-Line Path Generation With High-Performance Function-Generating Linkages
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