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RESEARCH PAPERS

The Rating of Abrasive Cutoff Wheels

[+] Author and Article Information
M. C. Shaw

Department of Mechanical Engineering, Carnegie-Mellon University, Pittsburgh, Pa.

J. Eng. Ind 97(1), 138-146 (Feb 01, 1975) (9 pages) doi:10.1115/1.3438526 History: Received October 02, 1973; Online July 15, 2010

Abstract

A rational approach to cutoff wheel selection is presented based on the most important criterion for this operation—minimum cost per cut. New parameters are identified which play a more significant role than the conventional quantities grain size, grade (hardness), and structure number normally used to characterize a wheel. The new quantities are: a) the effective number of cutting points per square inch on the wheel periphery (substitute for grain size); b) the volume that may be accommodated between successsive grains under cost optimum conditions (substitute for structure number); c) a chip flexibility parameter (no counterpart in conventional wheel signature); d) the downfeed corresponding to a grinding ratio of unity (this reflects wheel grade and resistance to wear). A number of experimental examples are presented to illustrate the application of the procedures proposed.

Copyright © 1975 by ASME
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