Machine tool control device

Abstract

The purpose of the present invention is to provide a machine tool control device capable of limiting the consumption amount of compressed air. This machine tool control device 3 controls a machine tool M having a spindle 1 and a compressed air supply device 2 for supplying compressed air into the spindle 1, the machine tool control device 3 comprising: a rotation state information acquisition unit 311 for acquiring rotation state information indicating a rotation state of the spindle 1; a supply condition determination unit 312 for determining, on the basis of the rotation state information acquired by the rotation state information acquisition unit 311, a supply condition necessary for compressed air to be supplied to the inside of the spindle 1; and a compressed air control unit 313 for controlling the compressed air supply device 2 on the basis of the supply condition determined by the supply condition determination unit 312.