在机械制造过程中经常遇到如图1所示的工件。图1a是把钢管和一个金属塞堵焊接而封口;图1b是钢板用模具拉伸几次而得到。上述两种加工方法都不太经济,焊接法费工费料,外形也不美观;拉伸法则需做多套模具,下料后的钢板余料浪费。我们试验研究了钢管的摩擦封口工艺。一、原理车床三爪卡盘上夹持一钢管(如图2a所示),以a In the mechanical manufacturing process often encounter the workpiece shown in Figure 1. Figure 1a is a steel pipe and a metal plug sealing and sealing; Figure 1b is a steel plate with a few times to obtain the mold. The two processing methods are not very economical, welding method fee fee materials, the appearance is not good; stretching law need to do more sets of molds, after cutting more than expected waste of steel. We experimentally studied the friction sealing process of steel pipe. First, the principle of three-jaw lathe chuck holding a steel pipe (shown in Figure 2a) to a