NOSE RADIUS OBLIQUE TOOL - CUTTING FORCE AND BUILT-UP EDGE PREDICTION

A semi-empirical machining theory is described for predicting cutting forces and temperatures for oblique nose radius tools from cutting con ditions and a knowledge of work material how stress and thermal proper ties. By defining an equivalent cutting edge based on the chip flow di rection, predictions are made for different cutting conditions and too l geometries (nose radii and rake angles in particular). It is shown h ow the cutting conditions giving a built-up edge can be determined fro m the predicted temperatures. For finishing conditions a comparison be tween predicted and experimental results is made and this shows good a greement.