| 摘要 |
PROBLEM TO BE SOLVED: To prevent the stripping action of a saw blade inner opening or a sleeve for arbor by contacting a driving face segment with a considerably long part of a longitudinal part of an opening segment in the rotation of the arbor. SOLUTION: When this saw blade 10 is mounted on a clamp 13 for saw blade, the gaps G are formed between a flat surface 151 of a driving surface 14 and a flat surface 251 of the clamp 13, and between a flat surface 153 and a flat surface 253. The gaps G are caused by the difference in angles of the flat surfaces. The driving surface 15 can be rotated by the difference in angle before the gaps G are closed, and/or the flat surfaces 151, 153 are contacted with the corresponding flat surfaces 251, 253. In the rotation of the clamp 13 for saw blade 10, the flat surfaces 151/251, and the flat surfaces 153/253 are aligned and contacted with one another over a considerable long part of a longitudinal part. In order to minimize the stripping action of the saw blade inner opening 10H and/or the driving surface 15, the contact length is maximized.
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