我院地质队在进行钻深孔作业中,常需要直径分别为325、377、426的大套管螺纹工件,这种螺纹为特殊梯形牙,螺距每英寸4牙,牙深1.5毫米,螺纹长75毫米。由于这么大的无缝管不圆度大,加工起来费用很高,同时工件长度还受车床有效长度的限制,有时不得不将长管子割断后再行加工。为解决这一难题,我们设计了一套附加在C6150车床上进行加工的装置,它 Our team of geology teams often need large casing threaded workpieces 325, 377, 426 in diameter for drilling deep hole operations. The threads are special trapezoidal teeth with a pitch of 4 teeth per inch, a tooth depth of 1.5 mm and a long thread length 75 mm. Because such a large seamless tube is not round, processing costs are high, while the length of the workpiece is also limited by the effective length of the lathe, and sometimes have to cut the long tube before processing. To solve this problem, we designed a set of additional processing equipment in the C6150 lathe, it