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RESEARCH PAPERS

Minimum Exponential Cost Allocation of Sure-Fit Tolerances

[+] Author and Article Information
D. Wilde, E. Prentice

Design Division, Mechanical Engineering Department, School of Engineering, Stanford University, Stanford, Calif.

J. Eng. Ind 97(4), 1395-1398 (Nov 01, 1975) (4 pages) doi:10.1115/1.3438796 History: Received June 06, 1975; Online July 15, 2010

Abstract

The least cost allocation of sure-fit machine tolerances for Speckhart’s exponential cost model is solved in closed form, without numerical iteration, as a geometric program with zero degrees of difficulty. The results show the importance of an exponential cost sensitivity parameter defined as the “characteristic tolerance”. The theoretical minimum cost can be determined without specifying the corresponding tolerances. Specific minimum cost tolerances can be computed later in closed form if potential cost savings are significant.

Copyright © 1975 by ASME
Topics: Machinery
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