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3
Mechanics of Orthogonal Cutting
3.1 Introduction
Many attempts have been made to analyze and understand the mechanisms
involved in the cutting process that enable predictions of the important
machining characteristics. In the last century, several models that describe
the cutting process have been developed; these models qualitatively
explain the phenomena observed during metal cutting. Furthermore, they
indicate the direction in which conditions should be changed to improve
the cutting performance in terms of product quality and surface nish.
Due to the conicting evidence about the nature of the deformation zone
in metal cutting, two sc