The drive system of hydraulic press mainly includes two types: pump direct drive and pump-accumulator drive. The pump directly drives the pump of this drive system to provide high-pressure working fluid to the hydraulic cylinder, the distribution valve is used to change the direction of fluid supply, and the overflow valve is used to adjust the limit pressure of the system to play a role in safe overflow. This drive system has few links and simple structure, and the pressure can be automatically increased or decreased according to the required working force, thus reducing the power consumption. However, the capacity of the pump and its driving motor is determined by the maximum working force and speed of the hydraulic press. This type of drive system is mostly used for small and medium-sized hydraulic presses, and also for large-scale (such as 120000 kn) free forging hydraulic presses directly driven by pumps. Pump-accumulator drive There is one or a group of accumulators in this drive system. When the high-pressure working fluid supplied by the pump has surplus, it is stored by the accumulator; When the supply is insufficient, it will be supplemented by the battery. Using this system, the capacity of pump and motor can be selected according to the average consumption of high-pressure working fluid, but because the pressure of working fluid is constant, the power consumption is large, and the system has many links and complex structure. This kind of drive system is mostly used in large hydraulic presses, or a set of drive system drives multiple hydraulic presses. According to the direction of force, there are two kinds of hydraulic presses: vertical and horizontal. Most hydraulic presses are vertical and used for extrusion.

Double-column hydraulic press This series of products is suitable for pressing, bending and forming of various parts, embossing, indentation, flanging, punching and shallow stretching of small parts; Metal powder products molding and other processing technologies. Adopt electric control, set up inching and semi-automatic circulation to ensure calendering, good slider guidance, convenient operation, easy maintenance, economy and durability. According to the user's needs, the functions of thermal instrument, ejecting cylinder, stroke digital display and counting can be added. Main functions (some tools need to be purchased) Anti-top electronic devices press-fit large transmission gears and shafts, correct deformed workpieces of front axle, disassemble cylindrical conical bearings, replace automobile clutch diaphragm spring press-fit bearings, replace the outer ring of reaction rod rubber assembly, disassemble and assemble various tight-fitting parts, replace clutch plate stop pins, rivet buffer springs, press-fit piston pins, knuckle pins and various pin sleeves by cutting and throwing rear axle basin tooth rivets. The main parts are made of 45 # integral cast steel, and the tempering table adopts movable center plate structure.