Feed Speed Control to Assure Accuracy of Complex Profile Surfaces Processing

This document describes how cutting force components influence the accuracy of processing complex profile surfaces of parts on CNC machines. It demonstrates how changing cutting zone geometrical parameters influences cutting force components. The article includes dependences for determining cutting force components. We propose a mathematical model to identify dynamic size-setting errors for 2D machining of complex profile surfaces. We suggest a processing method to reduce error occurrence rate by controlling feed speed. This document includes a method of setting feed motion speed depending on the geometrical parameters of the machined surface. We recommend changing feed motion speed depending on machined surface pitch against the feed motion vector. We demonstrate that feed motion speed control allows to increase machining efficiency while assuring the set accuracy of the shape and dimensions of the components’ complex profile surfaces.