图示为我们与八三机械厂联合开发的弹性装配杆。该夹具用于与抽油泵缸套的组装。夹具内液性介质采用航空液压油。 　　本设计以缸套 (工件 )内孔为第一定位基准；以端面为第二定位基准，拧动夹紧螺钉，推动滑柱，挤压液性体，迫使薄壁套筒径向胀大，与工件孔壁紧密接触，从而使 The picture shows the flexible assembly rod that we jointly developed with the 83 Machinery Factory. This clamp is used to assemble the pump cylinder. Hydraulic fluid within the fixture using aviation hydraulic oil. In the design, the inner hole of the cylinder liner (workpiece) is taken as the first positioning datum; the end surface is taken as the second positioning datum, the clamping screw is screwed on to push the spool to squeeze the liquid body to force the thin-walled sleeve to expand radially, Close contact with the workpiece hole wall, so that