Research on Key Technologies of Double-cylinder Synchronous Hydraulic Machine

Abstract In the operation of the double-cylinder gantry hydraulic machine, whether the two oil cylinders as the power transmission element are synchronized is an important factor affecting the precision of the workpiece manufacturing. Because the oil cylinder directly affects the horizontal precision of the beam of the actuator during the work of the press. Therefore, the double-cylinder synchronous precision control of the hydraulic machine is one of the key technical problems that needs to be solved in the manufacturing process of the hydraulic machine. This paper proposes a design scheme for the mechanical structure of the synchronous precision control of the double-cylinder gantry hydraulic machine. On the basis of using a simple hydraulic circuit to ensure the basic synchronization of the two oil cylinders, the flexible connection of the piston rod of the oil cylinder and the beam is used to reduce the damage caused by the deflection of the beam of the hydraulic system and machinery of the hydraulic machine. At the same time, a conehead is added at the end of the piston rod, and a taper hole is added to the corresponding part of the beam. By the alignment of the cylinder rod and the taper hole of the beam, the position of the beam is corrected so as to ensure the machining precision of the workpiece.