MAIN SPINDLE UNIT
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United States of America Patent
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N/A
Issued Date -
Dec 11, 2014
app pub date -
Jun 4, 2014
filing date -
Jun 10, 2013
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A main spindle unit includes: a damper bearing that restricts vibrations of a main spindle by being supplied with a fluid; a fluid supply device that supplies the fluid to the damper bearing, and that is able to adjust a flow rate of the fluid; a vibration detection sensor that detects a vibration of the main spindle; and a controller that adjusts the flow rate of the fluid supplied from the fluid supply device, based on the magnitude of the vibration detected by the vibration detection sensor.
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