我厂多种机床的刀具夹紧 ,采用了液压螺母 ,其原理是通过液压传动中油缸活塞面积不同 ,产生增力比来夹紧刀具。其结构如图 1所示 ,由缸体、3组压紧螺母及活塞 (隔 90°一组 )、标示杆、液性塑料图 1　液压螺母结构简图(充满缸体中的径向缸和轴向缸中 )、压盘等组成。使用时 ,将 I plant a variety of machine tool clamping, using a hydraulic nut, the principle is through the hydraulic transmission cylinder piston area is different, resulting in increased power than to clamp the tool. The structure shown in Figure 1, the cylinder block, three sets of compression nut and piston (every 90 ° group), marking rod, liquid plastic Figure 1 Schematic diagram of the hydraulic nut (filled cylinder in the radial cylinder and Axial cylinder), pressure plate and other components. When used, will