| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve processing speed when processing a surface to be processed. Ž<P>SOLUTION: A plurality of tooth form parts 8 are radially protruded from the center of a disc 6 with an interval Z along an outer circumferential edge 7 at the outer circumferential edge 7 of the disc 6. Hard chips 11 for cutting are arranged at raised front end surfaces 10 in the circumferential direction of the disc 6 of the tooth form part 8. Impact-resistant members 12 are interposed between the raised front end surfaces 10 and the hard chips 11. The hard chips 11 for cutting intermittently strike tooth planes 19 of gears 2 as a workpiece and cut them by the rotation of the disc 6. An impact at this time is absorbed by the impact-resistant members 12 to a certain extent. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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