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US 2020/0316735 A1Published application
Spindle device and machine tool
AssigneeFanuc Corporation
InventorMasahiro Murota
Life of this patent
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Abstract
A spindle device includes: a spindle shaft; a first housing configured to house the spindle shaft to which a gas is supplied, the first housing having a bearing that rotatably supports the spindle shaft; a motor located at an end of the spindle shaft and configured to rotate the spindle shaft; a second housing configured to house the motor, the second housing being joined to the first housing; and a duct having one end located at the bottom of a space inside the second housing and another end projecting from the second housing.
Claims8
A spindle device comprising:
- a spindle shaft;
- a first housing configured to house the spindle shaft to which a gas is supplied, the first housing having a bearing configured to rotatably support the spindle shaft;
- a motor located at an end of the spindle shaft and configured to rotate the spindle shaft;
- a second housing configured to house the motor, the second housing being joined to the first housing;
- and
- a duct having one end located at a bottom of a space inside the second housing and another end projecting from the second housing.
3 more elements
Dependencies are inferred from the claim text.