Noncircular Turning of Workpieces With Sharp Corners

[+] Author and Article Information
Tsu-Chin Tsao

Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801

Yung-Yaw Chen

Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan

Masayoshi Tomizuka

Department of Mechanical Engineering, University of California, Berkeley, CA 94720

J. Eng. Ind 112(2), 181-183 (May 01, 1990) (3 pages) doi:10.1115/1.2899564 History: Received December 01, 1988; Revised July 01, 1989; Online April 08, 2008


This note deals with noncircular machining of workpieces with sharp corners. Tool positioning for directly tracking a profile with sharp corners requires large actuator inputs at the sharp corners, which may easily go beyond the actuator saturation limit and cause serious dimensional errors. To solve this problem, a method for generating the nonsmooth profiles from multiple smooth profiles, which are followed by the tool, is given. This method utilizes the following nature of turning operations: the cutting tool practically passes one point in the axial direction of a workpiece several times and the machined shape is attained when the depth of cut is maximum.

Copyright © 1990 by The American Society of Mechanical Engineers
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