On Study of Cutting Forces Generated by Minor Cutting Edges

An experimental procedure was developed to separated the uncertain cutting forces generated by the minor cutting edges for interpreted the force components generated by the main and minor cutting edge. Cutting forces generated by minor cutting edges were investigated by experiments in precision hard part machining hardened GCr15 bearing steel with BZN8200 PCBN tool. With the improved chip loads, constitutive model and chip flow angle model, the predicted cutting forces show great agreement with the experimental results and verified the reliability of an improved cutting force model.