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RESEARCH PAPERS

A Control System for Chatter Avoidance by Ramping the Spindle Speed

[+] Author and Article Information
E. Soliman, F. Ismail

Department of Mechanical Engineering, Waterloo, Ontario N2L 3G1 Canada

J. Manuf. Sci. Eng 120(4), 674-683 (Nov 01, 1998) (10 pages) doi:10.1115/1.2830206 History: Received April 01, 1996; Revised July 01, 1997; Online January 23, 2008

Abstract

This paper presents a new control system for chatter avoidance in milling. The control system monitors the cutting process using a statistical indicator named the R-value which is computed from the cutting force signal. When chatter is detected, the control system ramps the spindle speed in search of a speed at which chatter ceases. The system does not involve time consuming computations and therefore is suitable for on-line implementation. Also, it does not interrupt the cutting process by halting the feedrate or the spindle speed. Simulations showed that the control system has a significant chatter avoidance potential in the high speed range, and also for partial and full immersion cuts. The system was implemented successfully to avoid chatter in slotting and half immersion down milling.

Copyright © 1998 by The American Society of Mechanical Engineers
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