RESEARCH PAPERS: Mechanisms Papers

Complete Shaking Force and Shaking Moment Balancing of Link Mechanisms Using Balancing Idler Loops

[+] Author and Article Information
Cemil Bagci

Department of Mechanical Engineering, Tennessee Technological University, Cookeville, Tenn. 38501

J. Mech. Des 104(2), 482-493 (Apr 01, 1982) (12 pages) doi:10.1115/1.3256371 History: Received June 01, 1980; Revised December 29, 1981; Online November 17, 2009


A method for completely balancing the shaking forces and shaking moments in mechanisms is presented. The method introduces shaking moment balancing idler parallelogram loop (or loops) which transfers the motion of a coupler link to a shaft on the frame of the mechanism, where the rotary balancers balance the shaking moment. The complete balancing of a mechanism is accomplished by maintaining the total center of mass of the mechanism stationary meanwhile achieving that the total angular momentum of the moving links of the mechanism vanishes. Positioning of the idler loops is illustrated for a series of multiloop mechanisms. Theorems on the complete balancing of shaking forces and shaking moments in mechanisms are established. Design equations for completely balancing some single and multiloop mechanisms are given. A numerical example is included.

Copyright © 1982 by ASME
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