Effect of the Variation of the Feed Rate on the Cutting Forces Calculation During Pocket Corner in High Speed Milling

This paper presents a model for accurately estimating the performance of pocket milling operations in terms of time and energy. The model calculates cutting forces along a machining path based on uncut chip thickness calculations. The study was conducted in two steps. Firstly, it focuses on modeling the feed rate in terms of geometric continuity and tangency between linear and circular interpolations. Secondly, the instantaneous uncut chip thickness was modeled by calculating the engagement angle for both linear and circular concave interpolations. The proposed model allows the calculation of cutting forces at the transition between two interpolations and provides a comprehensive understanding of the cutting force behavior during pocket milling operations.