Automatic Tool Selection for NC Turret Operation in Sheet Metal Stamping

[+] Author and Article Information
Kyung Ho Cho

Department of Nuclear and Energy Engineering, Cheju National University, Cheju, Korea

Kunwoo Lee

Department of Mechanical Design and Production Engineering, Seoul National University, Seoul, Korea

J. Eng. Ind 116(2), 239-246 (May 01, 1994) (8 pages) doi:10.1115/1.2901936 History: Received July 01, 1992; Revised March 01, 1993; Online April 08, 2008


In sheet metal fabrication using an NCT (numerically controlled turret punch press) machine, automatic tool selection is a major problem to be solved to improve its production performance. However, this operation has been done either manually or semi-automatically by human experts. In this paper, we have introduced the shape-index-set to handle the shape of sheet metal parts and developed an algorithm through which one can find the successive matching curves between two curve lists, one from the punching tool and the other from the boundaries of the sheet metal part. The algorithm is used to select the tools automatically to punch out the boundaries of sheet metal parts. Several experiments are presented to prove the successful tool selection.

Copyright © 1994 by The American Society of Mechanical Engineers
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