锻压技术

泵控锻造液压机液压系统设计与仿真

英文标题：Design and simulation on hydraulic system for pump-controlled forging hydraulic press

单位：1. 南昌大学先进制造学院 2. 华中科技大学材料成形与模具技术国家重点实验室

分类号：TG315

出版年,卷(期):页码：2022,47(6):160-168

摘要：

针对传统的22 MN泵控锻造液压机组控制系统复杂、运行过程稳定性较差、响应速度较慢等技术现状，对泵控锻造液压机组的组成结构、传动方式及其组件的运动特性进行了研究。利用AMESim软件建立了正弦泵偏心摆变量机构模型，仿真分析了偏心摆变量机构的控制性能和动态响应特性；建立了锻造液压机液压伺服控制系统模型，仿真分析了液压机在空载、镦粗、常锻和快锻4种不同运行工况下的动态特性。仿真结果表明：偏心摆变量机构设计合理，控制性能较高，能够满足小位移高频快速换向和较大驱动力的实际生产需求；液压机液压伺服控制系统的控制精度高、运行平稳、响应速度快，系统的节流损失和溢流损失小，能量利用率高。

For the technical status of traditional 22 MN pump-controlled forging hydraulic press unit with complex control system, poor stability in operation process and slow response speed, the composition structure, transmission mode and motion characteristics of components for pump-controlled forging hydraulic press unit were studied. Then, the variable mechanism model of sinusoidal pump with eccentric pendulum was established by software AMESim, and the control performance and dynamic response characteristics of the eccentric pendulum variable mechanism were simulated and analyzed. Furthermore, the hydraulic servo control system model of forging hydraulic press was established, and the dynamic characteristics of press under four different operating conditions of no-load, upsetting, normal forging and quick forging were simulated and analyzed. The simulation results show that the eccentric pendulum variable mechanism is designed reasonably and has high control performance, which can meet the actual production demand of high frequency quick commutation and larger driving force with small displacement. Thus, the hydraulic servo control system of hydraulic press has high control precision, stable operation, fast response speed, small throttle and overflow loss and high energy utilization rate.

基金项目：

伍乘星（1991-），男，博士，讲师 E-mail：15171457445@163.com 通信作者：陈柏金（1965-），男，博士，教授 E-mail：chenbaijin@hust.edu.cn

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