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车里雅宾斯克综合技术学院研制出在不动的难加工材料工件上用硬质合金切刀加工内螺纹的方法,,螺纹由所设计和制造的切头(图1)多次送进切出。螺纹切头固定在立式钻床和摇臂钻床上,切头传递由机床主轴输出的扭矩,刀具实现工作运动(旋转,轴向和径向进给),而送进完成后作辅助运动(从工作表面退刀和由零件的孔中退出)。切头能半自动地工作。自动循环包括每次送进前的径向进给,工作行程完成后的退刀,计算进给次数,切头反转和在加工完后断开机
The Chelyabinsk Institute of Technology has developed a method of machining internal threads with a cemented carbide cutter on an immovable workpiece of difficult-to-machine material. The threads are fed into the cutter several times (Fig. 1) Out The thread cutting head is fixed on the vertical drilling machine and the radial drilling machine. The cutting head transmits the torque output by the machine tool spindle, and the tool realizes the work movement (rotation, axial and radial feeding), and the feeding completes the auxiliary movement Work surface retraction and exit from the hole of the part). Cutting head can work semi-automatically. Automatic cycle, including each feed before the radial feed, retract the work after the completion of the stroke, calculate the number of feeds, crop reversal and disconnect the machine after processing