Shear angle solutions in orthogonal machining

Abstract After briefly considering the more important shear angle solutions a new analysis is presented which is based on recent observations at slow cutting speeds and which takes into account the variable flow stress property of the work material. It is shown that the effective shear angle will be smaller at slow speeds, for given values of tool rake angle and tool-chip interface friction, than at high speed sowing to the increase in width of the deforming zone with decrease in cutting speed. The limiting case where this zone degenerates to a plane is also considered and the resulting equations are shown to give reasonable agreement with experiment.