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许多零件的冷却油孔,长而小,给加工带来麻烦甚多。目前,工具行业供应的标准加长钻头,又无法满足生产的需要,故须自己接长。我厂工人师傅积二十年钻孔经验,对φ6mm以上钻头可接长至600mm,加工出零件的孔径偏差不超过0.10mm。具体接法如下,将φ6mm的钻头1的头部切成图示凹槽。用A_5钢拉光圆,校直后加工成带凸台的接长柄部2,彼此以紧配合连接。然后,将组合后的加长钻柄部,夹紧于钻床夹头内。开车,校准钻头的
Many parts of the cooling hole, long and small, to the processing caused a lot of trouble. At present, the standard drill bit supplied by the tool industry can not meet the needs of production. Therefore, it is necessary to pick up its own length. I plant workers master plot drilling experience for two decades, the drill can be longer than φ6mm up to 600mm, processed parts of the aperture deviation does not exceed 0.10mm. The specific connection is as follows, the head of the drill bit 1 of φ6mm is cut into the groove of the figure. Use A_5 steel pull round, straight after processing into a long handle with a boss 2, with a tight fit with each other. Then, the combination of longer drill shank, clamped in the drill chuck. Drive, calibrate the bit