CALCULATION OF THE SHEARING ANGLES WHEN ORTOGONAL FREE TURNING WITH CUTTER OF A NEGATIVE RAKE ANGLE

O.S. Manovytskyi; V.S. Antonyuk

O.S. Manovytskyi V. N. Bakul Institute for superhard materials of NAS of Ukraine
Доктор технічних наук, професор Віктор Степанович Антонюк National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

Keywords: shearing angle, acting angle, coefficient of friction, shrinkage of chip, steel mark, deformation characteristics

Abstract

The determination of shearing angle in process of free orthogonal cutting of low-plastic carbon-ferrous alloys is provided by analytic method based on mechanical resistance of material machined. There are numerous marks of steels deformation characteristics under the temperature of cutting as well as results of experimental turning analyzed. The method proposed enables to calculate shear angles, angles and coefficients of friction, as well as shrinkage of chip dependently of steel mark, relative elongation and relative constriction of steel deformed when turning under the proper cutting temperature.