CUTTING ROUTE PREPARING METHOD AND CUTTING SIMULATION METHOD FOR TOOL FOR NC MACHINE TOOL

摘要

PURPOSE: To shorten the computing time by setting a large grid interval at the time of rough machining without apprehension that the required shape is excessively cut. ;CONSTITUTION: The maximum value of the (z) coordinate value of the surface of a required shape is obtained per a unit square area of each grid, and the two-dimensional arrangement SH having this maximum value as an element is prepared (process 11). The minimum value of the (z) coordinate value of the surface of the shape of the tool tip is obtained per a unit square area of each grid, and the two-dimensional arrangement HL having this minimum value as an element is prepared (process 12). The lower limit (z) coordinate value of the center of the tool tip, which can pass the tool without excessively cutting the required shape at all points within a unit square area of each grid is obtained on the basis of these two-dimensional arrangement SH and HL, and the two-dimensional arrangement LI having this lower limit (z) coordinate value as an element is prepared as the cutting limit surface. The tool route (p) is prepared on the basis of this cutting limit surface LL.;COPYRIGHT: (C)1996,JPO