模锻压力机液压系统的设计

根据高强度机械零件的锻压工艺要求,设计了梁柱结构模锻压力机的液压系统和PLC控制系统,液压系统采用了基于增压缸的增压回路,降低了系统的压力等级,提高了液压元件的使用寿命。为实现液压缸的快速运行,系统采用差动连接和基于蓄能器的快速运动回路。为降低液压换向时产生的冲击,采用先降压再换向的泄压回路。利用AMESim软件对增压回路和快速运行回路进行仿真分析,系统压强为10.65 MPa,经过增压回路增压后,液压缸内压强为52.46 MPa,符合增压比5.165的设计要求。仿真结果表明,系统具有压力高、动作快、增压效果明显、自动化程度高等优点,满足高强度机械零件的模锻需求。

Design on hydraulic system of die forging press

According to the forging technology requirements of high strength mechanical parts,the hydraulic system and PLC control system of die forging press with beam-column structure were designed.The hydraulic system applied a booster circuit based on the pressurized cylinder to reduce the pressure rating of system and improve the service life of hydraulic components.Then,it used the differential connection and the accumulator-based fast-motion circuit to achieve the rapid operation of hydraulic cylinder.The relief circuit which decreased pressure first and then changed direction was applied to reduce the impact of hydraulic directional change.Next,the pressure increasing circuit and the fast moving circuit were simulated by AMESim software,and the pressure of system was 10.65 MPa.After the pressure increasing circuit was pressurized,the pressure inside the hydraulic cylinder was up to 52.46 MPa,which accorded with the design requirement of the booster ratio of 5.165.The simulation results show that the system has the advantages of high pressure,quick action,supercharging effect and high automation,and meet the demand for high strength mechanical parts.