| 摘要 |
At the time of execution of concurrent six-axes cylindrical interpolation instruction wherein a start point, an intermediate point, an end point and feed speed are instructed in a machining program PRO, a machining data computing portion <bold>59 </highlight>computes angular velocity of first, second, and third rotational axis directions and moving speed of first, second and third axial directions so as to correspond the feed speed of a torch with respect to a workpiece with the feed speed instructed in the machining program PRO, and the machining control portion <bold>55 </highlight>simultaneously controls the first, second and third axes and the first, second and third rotational axes on the basis of the angular velocity and the moving speed which are computed so as to rotate a chuck holding the workpiece and to move the torch, so that machining on the workpiece is executed.
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