Improved dynamic cutting force model in peripheral milling - Part I: theoretical model and simulation

摘要

The accurate prediction of cutting forces is important in controlling the tool deflection and the machining accuracy. In this paper, the authors present an improved theoretical dynamic cutting force model for peripheral milling with helical end-mills. The theoretical model is based on the oblique cutting principle and includes the size effect of undeformed chip thickness and the influence of the effective rake angle. A set of closed form analytical expressions is presented. Using the cutting forces measured by Yucesan [1] in tests on a titanium alloy, the cutting force coefficients are estimated and the cutting force model verified by simulation. The simulation results indicate that the improved dynamic cutting force model does predict the cutting forces in peripheral milling accurately. Simulation results for a number of particular examples are presented.