| 摘要 |
The present invention relates to an inner circulating cooler for a spindle of a machining tool capable of improving the efficiency of using energy by operating a pump for supplying cooling oil by using the rotating power of a spindle driving motor without using separate power of the motor, and of reducing manufacturing costs, weight, and size as an oil condenser is not necessary. The inner circulating cooler is composed of the spindle driving motor for generating the rotating power; a head body in which a gear for transmitting the rotating power of the spindle driving motor is installed inside; the spindle installed on the head body and rotating by receiving the rotating power via the gear; a bearing installed between the spindle and head body; a tank for storing cooling oil; the pump driven by receiving the rotating power of the spindle driving motor via the gear and then supplying the cooling oil stored in the tank; and an oil pipe installed for supplying the cooling oil to the inside of the bearing and head body from the tank and pump and collecting the supplied cooling oil. |
