Abstract
For the purpose of improving the productivity of manufacturing molds and dies, a real time numerical control system has been developed in this study. It can accept the geometrical data of the three dimensional parts and generate tool path for rough cutting, semi-finishing and finishing automatically. In order to realize complete processing of the offset surface generation and the cutter collision check for any type of cutting tool, the Inverse Offset Method is incorporated into the system. The Tool Path Tracking Method developed by a preceding study of the authors is modified slightly to apply the parallel processing and generate tool path using the data of discrete points representing the offset surface. The iterative method is not used in point of each processing of the Inverse Offset Method and the Tool Path Tracking Method, which will be main factor to improve the reliance and enhance the processing speed of the system. Simulated results of tool path and real time cutting tests show that new type CNC controller implemented the function of real time tool path generation is feasible.
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