在中小型车床上加工小螺距内螺纹,特别是盲孔螺纹时,普遍存在产品质量得不到保证,丝锥容易折断,生产效率低的问题。后来我们研制了附图所示的小型钻攻夹具,较好地解决了在普通车床上加工小螺距零件的难题。结构特点 (1)两排钢球3安装在锥柄1的内孔中,作为夹具工作时自动滑移导向装置,能方便地消除尾座对工 Small and medium-sized lathe in the processing of small-pitch internal thread, especially the blind hole thread, the prevalence of product quality can not be guaranteed, taps easily broken, the problem of low productivity. Later, we developed a small drilling tool as shown in the attached figure, which solved the problem of machining small pitch parts on the ordinary lathe. Structural features (1) Two rows of steel balls 3 are installed in the inner hole of the taper shank 1 and automatically slide the guide device when working as a fixture, which can conveniently eliminate the tailstock to the workers