MACHINE TOOL CONTROL DEVICE, AND MACHINE TOOL

WIPO Patent Application WO/2023/095286

A1

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 shaft by causing the turning shaft to rotate, said total turning inertia being the total inertia, around the turning shaft, of the turning shaft and an object that rotates together with the turning shaft; 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 shaft, 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 shaft, 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 shaft so as not to exceed the maximum rotational speed.

TACHIKI SHINGO (JP)
TSUCHIDA YUKI (JP)

PCT/JP2021/043406

June 01, 2023

November 26, 2021

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FANUC CORP (JP)

B23B25/06

JP2014096929A	2014-05-22
JP2018179849A	2018-11-15
JP2014079867A	2014-05-08
JP2015055923A	2015-03-23
JP2014007816A	2014-01-16
US20050103135A1	2005-05-19

SHOBAYASHI Masayuki et al. (JP)

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