我厂加工图1所示工件,原采用图2所示方法车外圆,拆卸困难。后来我们改用三爪卡盘夹持螺杆3(图3),并在工件1与三爪卡盘4之间垫上垫圈2。下工件1时把三爪卡盘4松开,垫圈2也就吃不上劲,工件1可轻松卸下来了。 I plant the workpiece shown in Figure 1, the original use of the method shown in Figure 2 car outside the circle, disassembly difficulties. Later, we use a three-jaw chuck clamping screw 3 (Figure 3), and the workpiece 1 and the three-jaw chuck 4 washer 2 washers. Under the workpiece 1, the three-jaw chuck 4 is released, and the washer 2 can not eat the workpiece. The workpiece 1 can be easily removed.