| 摘要 |
PURPOSE:To provide a cooling effect without reducing the turning accuracy of a spindle by providing a grinding liquid supplying nozzle having a directional property on a spindle central part without making no contact with the spindle, in a surface grinding rotary machine of traverse axis type. CONSTITUTION:A grinding fluid supplying pipe 14 is arranged in a hole 12 formed on the central portion of a spindle 11 without making no contact with the spindle 11, and is fixed on a spindle housing 13 by means of a fixing part 16. Further, a nozzle 15 having a directional property in the prescribed direction is attached onto the tip of the grinding fluid supplying pipe 14. And, a grinding fluid is supplied to the nozzle 15 through the grinding fluid supplying pipe 14, and injected in the respective directions according to nozzle shapes. With this situation, it is possible to attain sufficient cooling and a chip elimination effect with a small quantity of the grinding fluid without reducing the turning accuracy of the spindle. |
