This paper presents an analysis of the entry process and tool fracture in the milling operation. Equations representing different types of initial contacts are derived. Experimental and theoretical results reveal that the direction of the cutting force and the initial location on the rake face determine the entry fracture in milling cutters.
NOMENCLATUREYo rake angle Y p axial rake angle Y f radial rake angle I, inclination angle E entry angle X, tool cutting edge angle af feed rate c comer angle of tool I index angle 9
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