In-Process Detection of Tool Failure in Milling Using Cutting Force Models

[+] Author and Article Information
Y. Altintas

Department of Mechanical Engineering, The University of British Columbia, Vancouver, British Columbia, Canada

I. Yellowley

Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada

J. Eng. Ind 111(2), 149-157 (May 01, 1989) (9 pages) doi:10.1115/1.3188744 History: Received May 01, 1987; Revised September 01, 1988; Online July 30, 2009


The authors show that first and second differencing of a time averaged resultant force is extremely effective in the recognition of tool breakage in milling. In order to be useful in production, however, such a system needs to have a knowledge of allowable levels of the first difference. It is shown that these levels, (thresholds), are extremely dependent on the ratio of cutter radius to width of cut, (immersion ratio). A method of on-line identification of the immersion ratio and threshold tuning is presented with experimental verification.

Copyright © 1989 by ASME
Topics: Force , Cutting , Failure , Milling
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