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在制造行业中 ,经常遇到在轴端上攻丝 ,这些轴类零件大部分都通过了调质处理 ,具有高韧性、高强度 ,给攻丝带来了很大的难度。因此 ,常常发生丝锥折断现象。攻丝时折断的丝锥一般露出工件表面 2～ 3mm,如果采用冲子冲断丝锥 ,丝锥会崩裂 ,无法取出 ,造成工件报废。为此 ,我们采
In the manufacturing industry, often encountered in the tapping on the shaft end, most of these shaft parts have been quenched and tempered, with high toughness, high strength, to tap a great deal of difficulty. Therefore, the phenomenon of taps often occurs. Broken tap tapping generally exposed surface of the workpiece 2 ~ 3mm, if the punch punch taps, taps will crack, can not be removed, resulting in scrapped parts. To this end, we adopt