... above is provided with lower die compensation device.3,The computer system of Holland Delem make (or Switzerland Cybelec) is provided and ... the grating ruler, valve group assembly of the hydraulic system and servo motor are all originally imported and have good ... sliding blocks (Y1, Y2) and backgauges (X, Y, Z,) are computer-controlled. The backgauges adopt ball screw and rolling guideway, ensuring ...