Drill Wear Monitoring in Circuit Board Manufacturing: An Experimental Study

[+] Author and Article Information
Ciro N. Ramirez

International Business Machines Corp., Austin, Texas 78758

R. Joe Thornhill

International Business Machines Corp., Austin, Texas 78758; The University of Texas at Austin, Austin, Texas 78712

J. Electron. Packag 114(3), 360-364 (Sep 01, 1992) (5 pages) doi:10.1115/1.2905465 History: Received October 15, 1991; Revised June 25, 1992; Online April 28, 2008


The empirical development of an indirect drill wear monitoring method in circuit board drilling is presented. Spindle vibration and mean drilling torque were measured using a single spindle drilling machine, and their usefulness in detecting drill wear was evaluated. The sensitivity of these measurements to potential changes in process parameters is examined, and linear discriminant functions are presented for monitoring drill wear with a sensor fusion approach.

Copyright © 1992 by The American Society of Mechanical Engineers
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