| 摘要 |
Even in an uncuttable state in which an actual rotational direction of a main spindle is not matched with an actually cuttable main spindle rotational direction of a tool, an interference check between a workpiece and the tool is performed. Accordingly, the cuttable main spindle rotational direction of the selected tool or the uncuttable main spindle rotational direction is compared with each main spindle rotational direction of a working machine during execution of a simulation, and it is determined whether an interference check between the tool blade edge and the workpiece is necessary on the basis of the comparison result. When it is determined that the interference check is not necessary in the step above, the interference check between the tool blade edge and the workpiece is not performed. When it is determined that the interference check is necessary, the interference check between the tool blade edge and the workpiece is performed. When the interference therebetween is present, abnormality is detected.
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