我厂在加工图1所示泵体时,因形位公差要求较高(圆跳动公差为0.25mm)用常规螺栓压板夹具调头加工另一面时,因三块压板不是同时压紧工件,故达不到图纸要求。为此,我们设计了联动式压板夹具,它装卸工件方便,效率高,加工精度达到图纸要求。夹具安装在车床主轴法兰盘上。装卸工件时,用扳手转动齿轮轴12(图2),使传动齿轮11转动,而带动 I plant in the process shown in Figure 1, the pump body, due to high requirements of geometric tolerances (round beating tolerance of 0.25mm) with the conventional bolt platen fixture to adjust the other side, because the three platen is not simultaneously compress the workpiece, so up Not to the drawing requirements. To this end, we have designed a linkage platen fixture, which is easy loading and unloading workpieces, high efficiency, precision machining requirements to meet the drawings. Fixture installed in the lathe spindle flange. When loading and unloading a workpiece, a wrench is used to rotate the gear shaft 12 (FIG. 2) to rotate the transmission gear 11