A NEW PROCEDURE TO DETERMINE INSTANTANEOUS CUTTING FORCE COEFFICIENTSFOR MACHINING FORCE PREDICTION

This paper presents a new procedure to determine instantaneous cutting force coefficients which are required for process simulation by mecha nistic modeling. This new procedure drastically reduces the number of experiments for calibration and improves the accuracy of dynamic cutti ng forces and force signatures by considering the size effects. Compar isons are shown to illustrate the effectiveness of the proposed method in determining the chip flow angle and those predicted by various exi sting analytical models. The importance of using instantaneous cutting force coefficients instead of conventional average coefficients is de monstrated through simulation based on the mechanistic models. (C) 199 7 Elsevier Science Ltd. All rights reserved.