| 摘要 |
PROBLEM TO BE SOLVED: To achieve a structure capable of discharging therefrom efficiently a conical roller after being processed.SOLUTION: An axial direction supply passage 56 and a radial direction supply passage 57 are provided on a supply ring 50 rotating synchronously with an upper board 17. Such a constitution is adopted that, at a processing time, a coolant supplied from a supply port 63 of a supply box 52 to the supply ring 50 is allowed to hit onto a small diameter side end surface 12 of a conical roller 4 matched to roller discharge means relative to the circumferential direction, through the axial direction supply passage 56 and the radial direction supply passage 57.SELECTED DRAWING: Figure 1 |
