New Developments in the Theory of the Metal-Cutting Process: Part I. The Ploughing Process in Metal Cutting

[+] Author and Article Information
P. Albrecht

Physical Research Department, The Cincinnati Milling Machine Company, Cincinnati, Ohio

J. Eng. Ind 82(4), 348-357 (Nov 01, 1960) (10 pages) doi:10.1115/1.3664242 History: Received August 14, 1959; Online December 09, 2011


Revelation of the significance of “ploughing” in the metal-cutting process, which occurs because of the finite sharpness of the cutting edge, leads to a better understanding of the mechanics of the metal-cutting process. The concept of the ploughing force on the extreme cutting edge allows the development of a more complete force diagram which separates the ploughing force from the chip-tool interface force. Components of this more detailed force diagram have been verified experimentally. In terms of the new force diagram the real value of the coefficient of friction on the chip-tool interface has been found and the paradox of variation of the coefficient of friction with variation of rake angle explained. The paper also contributes to a better understanding of such events as the effect of cutting velocity upon tool forces, built-up edge, chip curling, and residual stresses in the work surfaces.

Copyright © 1960 by ASME
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