| 摘要 |
PROBLEM TO BE SOLVED: To allow a worker to machine a workpiece with high precision by holding a grinder in his hand. SOLUTION: In this grinder 1 which supports a grinding wheel 11 by a rotary shaft 4 and rotates the grinding wheel 11 using the rotary shaft 4 as the center of rotation to grind a workpiece, a cylindrical trace part 12 surrounding an outer peripheral face 11b of the grinding wheel 11 is provided. Furthermore, the trace part 12 is screw-fitted in an outer face of a grinder cover main body 2 to adjust relative positions of the trace part 12 and the outer peripheral face 11b of the grinding wheel 11 by changing a screw-fitting condition of the grinder cover main body 2 and the trace part 12. |
