在容器、管道制造中,常遇到连接管道的圆弧面(图1),我厂生产的各种真空阀门管道圆弧面,过去一直采用镗刀在铣床上镗成,生产效率低、质量差。后来,我们根据圆弧成形原理,将镗削改为车削,制作了如图2、3所示的车夹具,该夹具有以下优点:1.车夹具直接装在车床主轴上,工件以夹具上的孔定位,保证了圆弧中心位置的正确 In the container, pipe manufacturing, often encounter the connecting pipe arc (Figure 1), I produced a variety of vacuum valve pipe arc surface, the boring knife used in the past boring machine, low productivity, quality difference. Later, according to the principle of circular arc forming, the boring is changed to turning, and the car fixture shown in FIG. 2 and FIG. 3 is manufactured. The fixture has the following advantages: 1. The car fixture is directly mounted on a lathe spindle, Hole positioning, to ensure that the arc center position is correct