Research On Ball Cutters NC Machining Tool Path Planning Based On The Surface Subdivision

Parts outline complexity more and more high, at the same time in meet the precision requirement, processing efficiency also needs to be improved, for this to solve complex free surface by the said parts NC machining technology appearance has practical necessity. Tool path generation algorithm has been making research more extensive modern numerical control. In the free surface five-axis machining, the quality of the tool path to the processing of the surface quality and machining efficiency cause a direct influence.Currently existing tool path generation algorithm is in meet processing requirements of the situation relative to the surface processing parts of a single path generation algorithm. But because of the shape of the free surface features complicated and changeable, and every tool path generation algorithm is based on free surface shape characteristics based on the advantages and disadvantages of existing, For most of the major research now for a single processing method to get the tool path of processing surface of optimization calculation, this paper puts forward a new method of combined processing, the main idea is:First based on the curvature matching on free surface shape feature of fragmentation classified, based on free surface discrete points of main curvature, Gaussian curvature and mean curvature the free surface into several curved surface information and technological characteristics of the same or similar surface species, and then based on the surface of the specific characteristics of fragmentation of the optimization of the processing method, based on the characteristics of the little change after triangulating the curvature of the area with parameters line method processing, in curvature change large area with high residual method processing, thus make full use of the various existing tool path generation algorithm for the processing of the surface of the different shape features advantages, which, on the whole, the improvement of the machining efficiency and machining quality.According to the thought and the processing object instance, Use the ball head knife through the VC++platform development and software MATLAB programming shows the algorithm for the sword of the rail, and existing software and generated path machining efficiency of the contrast.