| 摘要 |
PROBLEM TO BE SOLVED: To provide a dovetail-shaped saw blade, capable of reducing cutting resistance of the sawtooth in cutting a workpiece, and favorably forming a cut surface of the workpiece. SOLUTION: This saw blade is provided with at least two stages of tip parts, having three kinds or more of height differences at the tip parts, with angles of 90°or less at cutting edge corners 23 and 27. A sawtooth 15A, with the largest cutting width, is a dovetail-shaped sawtooth, having an angle of 90°or less at a cutting edge corner 27 of the tip part. A sawtooth 13A having the second largest cutting width has a cutting edge corner angle of 90°or less. The sawtooth 13A of the second largest cutting width is a drumstick-shaped sawtooth, and in the saw blade, the half or half or more sawteeth in the first group of the sawteeth have a cutting edge corner angle of 90°or less. COPYRIGHT: (C)2006,JPO&NCIPI
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