Machine tool provided with spindle having measurement function
AssigneeNakamura-Tome Precision Industry Co., Ltd.
InventorsManabu SAWADA, Naotsugu NISHIMURA
Life of this patent
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Abstract
A machine tool includes: a hollow spindle including a hollow portion along an axial direction; a plurality of chuck claws openably mounted at a distal end portion of the hollow spindle, and configured to hold a workpiece; an operation rod inserted into the hollow portion of the hollow spindle in a movable manner, and configured to close the plurality of chuck claws with movement of the operation rod toward one side in the axial direction and open the plurality of chuck claws with movement of the operation rod toward the other side in the axial direction; and a measuring apparatus configured to measure an opening dimension of the plurality of chuck claws based on a movement amount of the operation rod.
Claims5
A machine tool comprising:
- a hollow spindle including a hollow portion along an axial direction;
- a plurality of chuck claws openably mounted at a distal end portion of the hollow spindle, and configured to hold a holding portion of a workpiece;
- an operation rod inserted into the hollow portion of the hollow spindle in a movable manner, and configured to close the plurality of chuck claws with movement of the operation rod toward one side in the axial direction and open the plurality of chuck claws with movement of the operation rod toward the other side in the axial direction;
- and
- a measuring apparatus configured to measure an opening dimension of the plurality of chuck claws based on a movement amount of the operation rod.
Dependencies are inferred from the claim text.