Milling with Feed Control on a Computer Numerical Control Machine-tools

Abstract

The process of contour milling is characterized by a change in cutting conditions along the form-formingtrajectory even with an equidistant allowance. Therefore, researching the possibilities of feed control in order to stabilizethe cutting process during milling is an urgent task. The results of experimental studies of end milling on the XYZ VMC1010 machine are presented. Milling of a specially prepared workpiece was performed when the allowance along thecutting path was changed from 0 to 6 mm in depth with a milling width of 30 mm. Milling was performed with a constantfeed in the cutting mode offered by the tool manufacturer and according to a specially designed feed control law. The feedcontrol law was formed automatically when modeling the allowance removal process based on its main characteristic –materials removal rate (MRR). The results convincingly proved the effectiveness of the proposed supply control. The powerof the process was significantly leveled along the milling path regardless of the change in depth of cut, and the machiningtime was reduced by 35%.