| 摘要 |
PURPOSE:To smoothly enable a tool to be approached to a work by finding an approaching locus at the time of starting cutting, based on a cutting locus data stored at the time of restarting the cutting after the interruption of the cutting, and making the tool approach to an interrupted point by the approaching locus. CONSTITUTION:The approaching locus at the time of restarting the cutting after the cutting is interrupted at a point Pc, is found based on data CP1-CP3 being outputted in a past. In other words, the data in which those data are shifted by shift quantities d1, d2, and d3 in the Z direction of a coordinate axis, are found. At this time, assuming that it is d1>d2>d3, the value is set so that it goes to zero at a slit starting point Pc. The data obtained in such way is represented in dotted lines, and they form an approaching locus CPA-CPC-Pc, and the tool is approached to a point where the cutting is interrupted, that is the work, smoothly by the approaching locus.
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