| 摘要 |
A spindle device of a machine tool capable of preventing coolant mist from being excessively liquefied in an area between a mist outlet member 23 and near the rear end part of a tool 29, wherein a straight feed pipe 14 formed of a double tube having an inside tube 14a and an outside tube 14b is inserted into an inside hole formed at the center part of a spindle 2 in non-rotating state not coming into contact with the spindle, coolant is fed to the inside tube 14a, compressed air is fed to the outside tube 14b, and a mist generating member 16 is formed of both tubes near the inside tip part of the spindle, a mist outlet member 23 is installed into the outside tube 14b integrally with each on the mist outlet passage c of the mist generating member 16 so as to surround the mist outlet passage and a mist guiding extension member 24 allowed to reach near the rear end part of the tool in the center hole of the tool holder is installed, integrally with the spindle, on the other tool holder 8 side, and the mist guiding passage f of the mist guiding extension member 24 is allowed to communicate with the mist outlet passage c of the mist outlet member 23 through both a rotary joint 25 and a pressing tube member 27. <IMAGE> |
