关键词: 刀轴矢量, 复杂曲面, 可行域, 五轴数控加工

Abstract: Dealing with existing work in the mutation and obstacles of sculpture surfaces, the tool shaft often required to make drastic changes in its orientation between two neighboring contact points. This will inevitably cause tool damage and a direct impact on the processing quality. The usual solution to this problem is to smooth the tool path in the configuration space. The method which proposed here is a simple and effective tool axis vector optimization method. It will first insert interpolation points in the non-interference region within the effective processing to ensure that the overall optimization of the tool axis vector. In the meantime to improve the C-space method in the interference region, the tool axis vector smoothing the feasible region will be generated. Examples show that this method can effectively generate complex surface machining tool axis vectors, high-activity handling the processing of global and local interference situation, avoid overcut and not increase the number of processing points, achieve the optimization of tool axis vectors.

Key words: 5-axis CNC machining, Complex surface, Feasible region, Tool axis vector