| 摘要 |
The present invention relates to a grinder for machining an edge of an angled hole which can machine the edge of the angled holed, which is formed when machining a frame, to have a value R. The grinder includes a grinder body having a rotating shaft selectively rotated by operation of a user; a tool head member engaged with the rotating shaft of the grinder body to machine the edge of the angled hole in cooperation with rotation of the rotating shaft; and a guide member engaged with a front outside of the grinder body and supported by the surface of a plate connected to an angle to guide rotation of the grinder body. The tool head member or a tool can be quickly replaced to machine various angled holes, and the guide member is mounted to the outside of the grinder body to stably support the tool around a peripheral edge of the angled hole, thereby machining the peripheral edge of the angled hole to have a plane or a curved surface of the value R. Relative to the prior art using a separate dedicated device, production costs are reduced, and the productivity is improved. Since the tool is brought into accurately close contact with the angled hole, even a non-skilled worker can machine the sharp edge of the angled h ole to have the uniform value R, without inclining a body in left and right directions. |
