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一般手用锯条锯齿角度前角是0°,后角是30°(机用锯条也大致相同)。锯齿采用较小的前角是因为锯条用薄片金属制成(手用锯条厚度约0.64毫米,机用锯条厚度约1.2～2毫米),如果前角太大,吃刀深了,锯齿会受不住,容易崩裂。锯齿采用较大的后角是为了不影响后面一齿的齿形,同时,切下来的切屑也有“容屑空间”容纳。这样锯齿前角小,在金属上锯来锯去,本来就不耐磨,再加上后角
General hand saw blade saw blade angle is 0 ° angle, rear angle is 30 ° (machine saw blade is also roughly the same). Saw teeth with smaller rake angle is because the saw blade is made of sheet metal (hand saw blade thickness of about 0.64 mm, machine saw blade thickness of about 1.2 ~ 2 mm), if the anterior horn is too large, eat deep, serrated will not Live, easy to crack. Serrated with a larger relief angle in order not to affect the tooth shape of the back of a tooth, at the same time, the cut chip also has a “chip space” to accommodate. This sawtooth anterior horn small saw sawing in the metal, had no wear, plus the posterior horn