0
RESEARCH PAPERS: Mechanisms Papers

Three-Position Function Generation of Planar Four-Bar Mechanisms With Equal Deviation Transmission Angle Control

[+] Author and Article Information
C. R. Barker, Gwo-Huey Shu

Mechanical and Aerospace Engineering, University of Missouri-Rolla, Rolla, MO 65401

J. Mech., Trans., and Automation 110(4), 435-439 (Dec 01, 1988) (5 pages) doi:10.1115/1.3258941 History: Received July 28, 1988; Online November 19, 2009

Abstract

This paper is an extension of earlier work on mapping of three-position function generation of planar four-bar mechanisms. Previously, it has been shown that all of the potential solutions to a given problem may be represented in an αβ-plane which can be subdivided into mechanism types. Further, the regions in the αβ-plane may represent two possible forms of assembly plus a change of form class which are not valid solutions. In this paper, we provide a third-order polynomial which defines the locus in the αβ-plane of solutions which have equal deviation of their transmission angle from the ideal of 90° throughout the entire range of motion. When these solutions are mapped into a Cartesian plane, the ground pivot locations produce curves similar to the familiar Burmester curves for four-position synthesis problems. Additional advantages of the approach are that the input link is automatically a crank, the desired link length ratio can be controlled, and the solutions are free of defects.

Copyright © 1988 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In