METHOD FOR CALCULATING TOOL ROUTE OF WORKING CAM SYSTEM USING IRREGULAR MESH

摘要

PURPOSE: To quickly provide a highly accurate curved surface in three- dimensional curved surface working. ;CONSTITUTION: A curved surface working CAM system for inputting requested shape data and outputting tool route data executes tool route calculation for generating irregularity in the intervals of tool route dots in a tool advancing direction and the pick feeding intervals of the tool route by adopting hierarchical structure shown by a quarter tree as the data structure of a requested face mesh and offset face data to be used for a processing process for generating an offset face and utilizing the fineness of patches constituting the offset face and their adjacent ralation for dot intervals on the tool route. Consequently the quantity of data to be required for working a highly accurate curved surface can be reduced and the cutting work time of an NC machine tool in the three- dimensional curved surface working can be shortened. Thereby a highly accurate curved surface can quickly be provided.;COPYRIGHT: (C)1995,JPO