AN ANALYTICAL SOLUTION TO CUTTING FORCES AND CHIP THICKNESS IN MACHINING WITH A GROOVED TOOL INCLUDING THE TOOL-CHIP CONTACT ON THE TOOL SECONDARY RAKE FACE

摘要

A new slip-line model accounting for the tool-chip contact on the tool secondary rake face is proposed in this paper. The model incorporates seven slip-line models developed for machining during the last six decades as special cases. It is also integrated with Oxley's predictive machining theory to take into consideration the effect of strains, strain-rates, and temperatures on the material shear flow stress. Cutting tests involving the use of a grooved tool at a range of cutting speeds were conducted to validate the model. Good agreement has been reached between the predicted and experimental resultant force and chip thickness.