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RESEARCH PAPERS

A New Sensor for Real-Time Milling Tool Condition Monitoring

[+] Author and Article Information
C. James Li

Department of Mechanical Engineering, Columbia University, New York, N.Y. 10027-6699

S. Y. Li

Department of Precision Machinery and Instruments Changsha Institute of Technology, Peoples’ Republic of China

J. Dyn. Sys., Meas., Control 115(2A), 285-290 (Jun 01, 1993) (6 pages) doi:10.1115/1.2899033 History: Received October 30, 1990; Revised June 12, 1992; Online March 17, 2008

Abstract

A new sensor has been developed to automatically detect face-milling insert fracture, chipping, and wear. With a befitting PVDF (polyvinylidene fluoride) sensor, and an optical transmitter based on frequency modulation technique, a miniature sensor, with little influence on the cutting process, was positioned very close to the cutting site. Due to this closeness, the state of the insert can be reliably recognized with extremely simple and fast algorithms. A tool wear index which is sensitive to wear but insensitive to cutting conditions, a tool fracture index, and a chipping recognition scheme based on a linear pattern classifier have been developed and proven to be effective by experimental data.

Copyright © 1993 by The American Society of Mechanical Engineers
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