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RESEARCH PAPERS

A Study on Burr Formation Mechanism

[+] Author and Article Information
Sung-Lim Ko, David A. Dornfeld

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

J. Eng. Mater. Technol 113(1), 75-87 (Jan 01, 1991) (13 pages) doi:10.1115/1.2903385 History: Received May 01, 1989; Revised February 02, 1990; Online April 29, 2008

Abstract

A quantitative model of burr formation for ductile materials which does not include fracture during orthogonal machining is proposed. The burr formation mechanism is divided into three parts—initiation, development, and formation of the burr with appropriate assumptions. The mechanisms proposed are based on the observation of the behavior of workpiece material during orthogonal machining on commercial plasticine. To validate the model, orthogonal machining inside a scanning electron microscope at low speed was done with a copper workpiece and A16061-T6, A12024-T4 and A1390 were cut on a modified milling machine over a range of cutting speeds.

Copyright © 1991 by The American Society of Mechanical Engineers
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