Spindle device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 10, 2009
Grant Date -
Jun 26, 2008
app pub date -
Dec 21, 2007
filing date -
Dec 22, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The spindle device 1 is provided with: a housing 10 formed with a support hole 10a; a spindle 12 which is supported to rotate freely about an axis within the support hole 10a of the housing 10 and of which distal end is attached with a tool T; a drive motor 20 for rotating the spindle 12 about the axis, the drive motor 20 being configured by a rotor 22 arranged to rotate freely on an outer circumferential surface of the spindle 12 and a stator 23 fixedly provided on an inner circumferential surface of the support hole 10a of the housing 10; an electromagnetic clutch 30 for transmitting intermittently a drive force of the drive motor 20 to the spindle 12; and a controlling device 40 for controlling an operation of the drive motor 20 and that of the electromagnetic clutch 30.
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