| 摘要 |
PROBLEM TO BE SOLVED: To solve such the problem that an operator adjusts a rotation speed variation parameter in order to periodically vary a rotation speed of a tool or a workpiece so as to prevent occurrence of "chattering vibration" but since the adjusted rotation speed variation parameter is different depending on a shape or weight of a workpiece to be worked, it is necessary to adjust the rotation speed variation parameter each time the workpiece to be worked is changed, so that it is not efficient.SOLUTION: In a numerical control device comprising a function which creates numerical control information for performing working by rotating at least either a tool or a workpiece on the basis of working step data composed of a working shape and a working condition for working a workpiece having the working shape, an adjusted rotation speed variation parameter is acquired by the numerical control information creation function, recorded in the working step data and output to the numerical control information. Rotation speed variation control is performed on the tool or the workpiece to be rotated in accordance with the presence/no presence of the rotation speed variation control, a rotation speed variation amplitude and a rotation speed variation cycle in the numerical control information. |
