To provide a small-sized rotation machining device having the high machining accuracy of an object to be machined.
A first motor 20 has a motor shaft 21. A transmitting portion 31 is attached to a tip end of the motor shaft 21, and can rotate with the motor shaft 21. A transmitted portion 32 is provided so as to oppose to the transmitting portion 31, and rotations of the transmitting portion 31 is transmitted to the transmitted portion 32. A shaft member 41 is attached with the transmitted portion 32 at one end thereof. A bearing portion 40 bears the shaft member 41. A machining portion 42 is attached to the other end of the shaft member 41, and rotates with the shaft member 41 to machine an object 2 to be machined. Non-contacting transmission means 50 can transmit the rotations of the transmitting portion 31 to the transmitted portion 32 without contacting the transmitting portion 31 and the transmitted portion 32. A first supporting portion 11 supports the first motor 20. A second supporting portion 12 is provided separately from the first supporting portion 11, and supports the bearing portion 40.
| JP4007419 | Tools, tool holders and machine tools |
| JPH02190203 | PROTECTIVE DEVICE FOR FIXED TYPE TOOL |
| WO/2021/108651 | TOOL DRIVE ASSEMBLY WITH INTEGRATED LEAD DRIVE SHAFT |
KANO FUMIYOSHI
SAKAKIBARA SHIGENOBU
SHIBATA HIDENORI
SUENAGA TOMOHIRO
SAITO TOSHIO
| JPS61192441A | 1986-08-27 | |||
| JPH09257059A | 1997-09-30 | |||
| JPH0956146A | 1997-02-25 | |||
| JPS62264842A | 1987-11-17 |
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