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RESEARCH PAPERS

High-Speed Films of the Incipient Cutting Process in Machining at Conventional Speeds

[+] Author and Article Information
J. H. L. The

Kinetics Technology International B. V., The Hague, The Netherlands

J. Eng. Ind 99(1), 263-268 (Feb 01, 1977) (6 pages) doi:10.1115/1.3439149 History: Received July 12, 1976; Online July 15, 2010

Abstract

Investigations of the incipient cutting process have mainly used ductile materials (lead/brass) at low speeds (≤5 m/s). The present study is more realistic as it uses mild steel (0.45 percent C) at conventional speeds (50-300 m/s). High-speed films and force traces of the incipient stage were taken. Hardness profiles of the chiphead were also constructed. Two types of chip shape were found. One type occurs in the range of lower speeds (≤150 m/s) with larger depths of cut (≥0.30 mm/rev). Both types can be explained by the change in relative magnitudes of friction and the cutting force.

Copyright © 1977 by ASME
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