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    • 10. 发明公开
    • MACHINE TOOL CONTROL DEVICE, AND MACHINE TOOL
    • US20240377804A1
    • 2024-11-14
    • US18692181
    • 2021-11-26
    • FANUC CORPORATION
    • Shingo TACHIKIYuki TSUCHIDA
    • G05B19/402B23B7/12
    • G05B19/402B23B7/12G05B2219/45136
    • A machine tool control device according to one aspect of the present disclosure, which can prevent a workpiece from flying out, comprises: a total turning inertia estimation unit that, estimates the total turning inertia on the basis of feedback from a turning axis by causing the turning axis to rotate, said total turning inertia being the total inertia, around the turning axis, of the turning axis and an object that rotates together with the turning axis; a workpiece turning inertia estimation unit that estimates the workpiece turning inertia on the basis of the total turning inertia when a retention unit is not retaining a workpiece and the total turning inertia when the retention unit is retaining a workpiece, said workpiece turning inertia being the inertia, around the turning axis, of the workpiece; a maximum rotational speed calculation unit that, on the basis of the workpiece turning inertia, calculates the maximum rotational speed of the turning axis, at which the maximum energy when the workpiece separates from the retention unit is equal to a preset upper limit value; and a rotational speed limiting unit that limits the rotational speed of the turning axis so as not to exceed the maximum rotational speed.