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RESEARCH PAPERS: Mechanisms Papers

Synthesis of Planar Mechanisms for Coupler Tangent-Line Envelope Generation: An Alternative to Coupler Point-Path Generation

[+] Author and Article Information
Dev P. Sathyadev, A. H. Soni

Robot Design Center, Oklahoma State University, Stillwater, OK 74078

J. Mech., Trans., and Automation 110(2), 122-129 (Jun 01, 1988) (8 pages) doi:10.1115/1.3258916 History: Received July 01, 1986; Online November 19, 2009

Abstract

A synthesis procedure is developed to envelope a given plane curve by a tangent line carried by the coupler plane of a planar four-bar linkage. The synthesis procedure is based on a modification of the planar rigid-body displacement matrix developed by Suh [1]. The approach is based on considering a given curve as the envelope of a moving tangent line and synthesizing mechanisms to envelope the given curve. This is a novel approach in mechanism design and adds a new dimension to the path-generation problem of mechanism synthesis. The foregoing procedure is also extended to synthesize eight-link mechanisms to simultaneously coordinate the motion of two tangent lines. In addition to finite position synthesis, both infinitesimal and mixed position synthesis are considered.

Copyright © 1988 by ASME
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