| 摘要 |
PURPOSE:To enable to restore the sharpness of an edge tip and to reduce the need for changing a rotary blade, by rotating in opposition a rotary blade for a fixed time by a motor by coating a paste like abrasive on the surface of a porous net and into the porous net. CONSTITUTION:When abrasives are coated of the surface of a porous net 6, the abrasives come into the internal face of the porous net 6 by passing a lot of small holes. A motor 1 is rotated in opposition for scores seconds and several minutes by reversing the polarity of a battery loaded on the motor 1 by turning over a switch. The rotary blade 3 becomes in a inclining state in the opposite direction and is rotated with the back face of the edge tip elastically sliding with the inner face of the porous net 6 and the abravies are interposed in the sliding part. Thus, the edge tip can be polished simply, also desired sharpness is held over a long term and the need for changing the rotary blade is reduced. |
