在车床上加工长轴类工件,一般要用中心架或跟刀架支撑。但长轴类工件的外表面若是螺旋叶片,则没法用中心架或跟刀架了。我们在为上海某厂引进美国康宁公司的部分生产线的制造中,就遇到几根螺旋叶片长杆的加工难题。该螺旋杆长度为3869mm,在φ65×9mm的冷拔钢管上焊有16Mn材料的螺旋叶片。由于螺杆细长且叶片又多,给车削叶片外圆带来很大困难。若按通常方法,一端夹持,一端顶住,则哪怕吃刀深度再小,一切削整 In the lathe machining long axis type workpiece, generally use the center frame or the knife holder support. But the long axis of the workpiece if the outer surface of the spiral blade, you can not use the center frame or a knife holder. We are in the manufacture of a part of the production line for the introduction of Corning in the United States for a factory in Shanghai, we encountered several difficulties in the processing of spiral blade long rod. The screw length of 3869mm, cold drawn in φ65 × 9mm welded steel 16Mn spiral blade material. Due to the elongated screw and the large number of blades, it is very difficult to turn the outer circumference of the turning blade. If the usual method, one end of the clamp, one end to withstand, then even if the depth of the knife to eat again, all the cut