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苏联先进生产者、钻工科尔钦柯同志,在今年四月间来我国表演高速钻孔和机动攻丝时,曾留下一套机动攻丝夹头。我厂用这套夹头进行了几次试验,攻 M6～M10的螺纹,只要半分多钟,而用手工平均要3分半钟;提高效率约5倍,并且质量完全合格。我厂就根据这夹头进行测绘和试制,并已制好一批,发在车间使用,效果都很好。现在把这种机动攻丝夹头的结构和用法介绍如下。(一)机动攻丝夹头的结构1)本体1的尾部带锥度柄,用来插在钻床主轴孔中;下部装有 K31-1、8×7×15A 的键,以带动套体2;中间装有套轴10,用来吊着套4。2)套体2的下部装有法兰盘6和胶木摩擦片15,其中摩擦片14、13与套
The Soviet Union’s advanced producer, driller Comchinko, left a set of motorized tapping chucks when he performed high-speed drilling and motorized tapping in China in April this year. Our factory carried out several tests with this collet, attacking the thread of M6-M10, as long as half a minute, and using the manual to average 3 minutes and a half; improve the efficiency of about 5 times, and the quality is fully qualified. Our factory will carry out mapping and trial production according to this chuck, and has already made a batch of it and sent it to the workshop. The results are very good. The structure and usage of this type of motorized tapping chuck are described below. (A) of the structure of the power tap chuck 1) The body 1 has a taper shank at the tail for insertion in the spindle hole of the drilling machine; the lower part is equipped with K31-1, 8 × 7 × 15A keys to drive the sleeve body 2; A sleeve shaft 10 is arranged in the middle for hanging the sleeve 4. 2) The lower part of the sleeve body 2 is provided with a flange plate 6 and a bakelite friction plate 15, wherein the friction plates 14, 13 and the sleeve