On chip flow direction in oblique free cutting of ductile metals

Abstract

The paper addresses the available methods of determination of the chip flow angle h on the tool face in oblique free cutting of ductile metals. A method for assessing this angle by the chip contraction is put forward; it is based on determination of the effecting (working) rake γ_eff of the tool in the plane normal to cutting plane and passing through the chip flow direction. Comparative calculation results are given; it is noted that the proposed method offers advantages of simplicity and accuracy of determination of the angle η.