Mechanics of Orthogonal Machining: Allowing for the Effects of Strain Rate and Temperature on Tool-Chip Friction

An analysis of orthogonal machining is given in which the mean angle of friction usually used to describe the frictional condition at the tool-chip interface is replaced by the average shear stress along this interface. If this shear stress is expressed as a function of strain rate and temperature, using a velocity-modified temperature, there is good agreement between theory and experiment.