| 摘要 |
PURPOSE:To continuously efficiently and correctively grind a saw blade and a profile of a circular saw by pivoting said saw one tooth with every reciprocating pivotal operation of a rotary handle and moving forward the circular saw pivotably in the clockwise forward rotational operation to grind the saw blade by grinding allowance and continuously the NAGESHI surface 125 with counterclockwise backward rotational operation. CONSTITUTION:A circular saw 123 is pivoted one tooth by every reciprocating pivotal operation of a rotary handle 115 provided with a feed device 131. And the circular saw 123 is advanced unpivotably relative to a grinder 103 by the length of saw blade 124 with the clockwise reciprocating forward rotational operation of handle 115 to grind the saw blade 124 by grinding allowance. also, the circular saw 123 is backward rotated by the length of NAGESHI surface 125 relative to the grinder 103 with the counterclockwise backward rotational operation of rotary handle 115 to continuously grind the NAGESHI surface 125. Thus, the saw blade 124 and the NAGESHI surface 125 can be ground alternatively correctively and further continuously efficiently.
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