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用通用的丝锥在耐热钢、不锈钢等材料上攻丝时,由于这些材料的韧性大,常常产生“抱刀”,而使刀齿折断,使被加工的工件损伤。即使在攻丝时不产生“抱刀”现象,丝锥的耐用度和工件的光洁度也都是很低的。用跳齿丝锥攻韧性大的材料的丝扣时,由于跳齿丝锥的齿数少,摩擦大大地减少,饺切时产生的冷硬现象也减少。因此,不会产生“抱刀”现象和崩齿现象。同时,由于跳齿丝锥的散热、容屑和冷却空间都较大,改善了切削条件,从而可提高刀具的耐用度和工件的光洁度。
General-purpose tap in the heat-resistant steel, stainless steel and other materials on the tapping, due to the toughness of these materials, often produce “embossing”, leaving the knife teeth broken, the workpiece is damaged. Even in the tapping does not produce the “embrace” phenomenon, tap durability and workpiece finish are also very low. Tipping tap with tapping of large material, due to the small number of tooth hopper taps, friction greatly reduced, dumplings cut chilled phenomenon also reduced. Therefore, there will be no “knives” phenomenon and collapse phenomenon. At the same time, due to the heat dissipation of the toothpick, the chips and the cooling space are large, cutting conditions are improved, thereby improving the durability of the tool and the finish of the workpiece.