To provide a main spindle device that is applicable to an existing working machine with no problem, and can automatically and successfully carry out various kinds of machining operations with the assistance of ultrasonic vibration.
The main spindle device includes: a spindle body 10 freely rotatably supported in a housing 11; a spindle tip 20 having a horn 21 incorporating an ultrasonic vibrator 25 and a hollow portion 23 provided around the horn 21, and disposed at a tip of the spindle body 10 so as to rotate as the spindle body 10 rotates; a tool holder 30 attached to a tip of the spindle tip 20, and configured to rotate as the spindle body 10 and the spindle tip 20 rotate; and a draw bar 40 inserted into the center of the spindle body 10 and the center of the spindle tip 20, and configured to clamp and unclamp the tool holder 30.
ONIKURA HIROMICHI
KOGA TOSHINOBU
| JPH0560703U | 1993-08-10 | |||
| JP2005329501A | 2005-12-02 | |||
| JP2000280108A | 2000-10-10 |
| US20060128283A1 | 2006-06-15 | |||
| US20060128283A1 | 2006-06-15 |