SPINDLE DEVICE AND MACHINE TOOL
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United States of America Patent
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Issued Date -
Oct 8, 2020
app pub date -
Apr 2, 2020
filing date -
Apr 5, 2019
priority date (Note) -
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status (Latency Note)
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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.
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