Machine tool and origin point correction method
AssigneeFanuc Corporation
InventorsYuuzou Inaguchi, Gaku Isobe, Yasuaki Koyama
Life of this patent
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Abstract
A machine tool includes a turning position adjustment unit configured to control a turning drive unit so that, when a tool is transferred between a spindle and a grip, if an amount of sway of the tool is greater than or equal to a threshold value, a turret is turned and the amount of sway of the tool becomes less than the threshold value, and an origin point correcting unit configured to correct an origin point in accordance with a turning position of the turret acquired by a turning position acquisition unit, when the turret is turned by the turning drive unit so that the amount of sway of the tool becomes less than the threshold value.
Claims9
A machine tool including a tool changer configured to change a tool mounted on a spindle by way of a turret provided with a plurality of grips for retaining the tool, comprising:
- a turning drive motor configured to turn the turret;
- a controller operatively coupled to the machine tool and the turning drive motor;
- the controller programmed to perform the following steps:
- acquire a turning position of the turret with respect to an origin point;
- acquire an amount of sway of the tool when the tool is transferred between a grip of the plurality of grips and the spindle;
- control the turning drive motor so that, when the tool is transferred, if the amount of sway of the tool is greater than or equal to a threshold value, the turret is turned and the amount of sway of the tool becomes less than the threshold value;
- and
- correct the origin point in accordance with a turning position of the turret acquired, when the turret is turned by the turning drive motor so that the amount of sway of the tool becomes less than the threshold value.
Dependencies are inferred from the claim text.