Min-Max Load Model for Optimizing Machining Fixture Performance

[+] Author and Article Information
E. C. De Meter

Department of Industrial and Management Systems Engineering, The Pennsylvania State University, 207 Hammond Bldg., University Park, PA 16802

J. Eng. Ind 117(2), 186-193 (May 01, 1995) (8 pages) doi:10.1115/1.2803293 History: Received October 01, 1992; Revised March 01, 1994; Online January 17, 2008


Spherical-tipped locators and clamps are often used for the restraint of castings during machining. For structurally rigid castings, contact region deformation and micro-slippage are the predominant modes of workpiece displacement. In turn contact region deformation and micro-slippage are heavily influenced by contact region loading. Maximum loading magnitude has been shown to be a good indicator of workpiece displacement. This paper presents an algorithm which uses the min-max loading criteria as a basis for determining the optimal layout of locators and clamps as well as clamp actuation intensities. The experimentation used for model validation is also discussed along with experimental results.

Copyright © 1995 by The American Society of Mechanical Engineers
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