| 摘要 |
PROBLEM TO BE SOLVED: To provide a coolant supplying device capable of supplying coolant in both cases of outer diameter polishing and inner diameter polishing, dispensing with replacement of the device.SOLUTION: This coolant supplying device 1 supplies the coolant L to a grinding tool S for polishing an inner peripheral surface P1 and the outer peripheral surface P2 of the workpiece W. The coolant supplying device 1 includes a first arm 2 and a second arm 3. In the first arm 2, an injection port 8 for inner diameter polishing is formed. In the second arm 3, an injection port 13 for outer diameter polishing is formed. |
