End Track Following Control Method for Multi-axis Machining of Linear Cutting Tools

Abstract

In the process of linear tool multi-axis machining, it is prone to local interference, resulting in poor curvature matching of the machining end trajectory, tool path tracking control performance is not good, based on critical tool axis vector decomposition, a linear tool end path following control method for multi-axis machining is proposed. The tool axis spatial distribution model of complex curved surface channel parts is constructed, and the local interference suppression is carried out by using two-dimensional feasible pendulum tool domain analysis method. The curve and surface are the critical elements on the multi-axis machining interference surface of linear cutter. The intersection curve equation between the pendulum cutter plane and the surface to be processed is constructed, and the optimal tool parameter selection is realized by using the discrete characteristic point distribution of the surface of the critical cutter axis. Combined with the critical tool axis vector decomposition method, the end trajectory following control of linear tool multiaxial machining is realized. The simulation results show that the output stability of the end track following control of linear tool multiaxial machining is good by using this method. The precision and efficiency of multi-axis machining are improved significantly.