Machine tool and detection method
AssigneeDmg Mori Co., Ltd.
InventorsMasamitsu NAKAMINAMI, Masahiro FUJIKI, Seiichi FUKUZONO
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Abstract
A machine tool is provided capable of detecting an abnormality caused by detaching a spindle. The machine tool includes: the spindle configured to rotate a workpiece or a tool; a sensor configured to output a signal according to a rotation angle of the spindle; and a controller configured to detect occurrence of an abnormality in at least one of the spindle and the sensor when an electrical signal different from the signal output during each of rotation of the spindle and halt of the spindle is output from the sensor.
Claims13
A machine tool comprising:
- a spindle configured to rotate a workpiece or a tool;
- a sensor configured to output a signal according to a rotation angle of the spindle;
- and
- a controller configured to detect occurrence of an abnormality in at least one of the spindle and the sensor when a signal different from the signal output during each of rotation of the spindle and halt of the spindle is output from the sensor.
A method for detecting an abnormality in a machine tool, the method comprising:
- obtaining a signal according to a rotation angle of a spindle of the machine tool from a sensor;
- and
- detecting occurrence of an abnormality in at least one of the spindle and the sensor, based on a signal different from the signal output during each of rotation of the spindle and halt of the spindle being obtained.
Dependencies are inferred from the claim text.