NC Tool Path and Its Influence on Cutting Force in Peripheral Milling Analyses

Abstract

Peripheral pocket or contour milling using flat end milling tool can be performed using different tool paths. This paper presents analysis of possible tool paths and determination of cutting parameters which are dependable of chosen tool path and variable along the tool path. Engagement angle is identified as key parameter dependable of tool path which variations during the process causes the variations of cutting force. Knowledge of changes in engagement angle along the tool path is necessary for simulation and monitoring the cutting force during the machining process. Special characteristics of tool paths for high speed milling (HSM) and new demands in tool path construction arising with development of HSM machining are presented in this paper. Simulation of cutting parameters and cutting force variation along the tool path, presented in this paper, can be used as bases for development of methodology for choosing the most adequate tool path for machining of given contour considering minimum cutting force and minimum cutting force variation.