| 摘要 |
<p>A rotary blade for a surface grinder formed to be easily used by sharing a plate (2) and enabling grinding members (1) having chip-like cutters (1a) to be changed according to floors and also enabling the directions of the cutters (1a) to be easily and rapidly changed so that grinding and cutting in multiple ways can be performed with one type of grinding member (1). The rotary blade comprises the grinding members (1) and the plate (2). Male screws (1b) are vertically installed on the upper surface of the grinding members (1). Fitting parts (1c) of polygonal shape in plan view are formed, in a projected level difference fashion, on the uppersurfaces of the grinding members (1) at positions corresponding to the roots of the male screws (1b). A plurality of polygonal fitting holes (2a) fitted to the fitting parts (1c) are formed in the plate (2). The fitting parts (1c) are fitted to the fitting holes (2a) and nuts (4) are tightened to the male screws (1b) projected to the upper side of the plate (2) to fix the grinding members (1) to the plate (2).</p> |
