| 摘要 |
PROBLEM TO BE SOLVED: To enable any person to easily polish a drill without fail. SOLUTION: A driving motor 2 is mounted on a case 1, a grinding wheel 12 is fixed on a motor shaft 22, and a grinding wheel face is changed on a rotating shaft as a center by an inclination device 4 mounted on the case 1. A drill chuck 5 is mounted on a tip of a drill chuck pipe 6, and the drill chuck pipe 6 is placed on a pipe rack 8 to be used. The pipe rack 8 is fixed on a grinding moving plate 10 and moved on a moving plate receiver 11. Its moving width is between A and B in Fig. 3. The cutting quality of a knife edge can be improved by grinding a flank part of the knife edge by using a knife edge grinder. |
