摘要
针对250T粉末精整液压机压制频次不能满足设计需求的问题,对影响压制频次的主要因素(下内模冲油缸速度、泵出口插装阀阻尼和滑块行程)进行了研究。对250T粉末精整液压机液压系统的工作原理进行了分析,利用AMESim软件搭建了DG25通径方向插装阀仿真模型,并通过仿真验证了模型的正确性;搭建了250T粉末精整液压机液压系统的仿真模型,分别研究了下内模冲油缸速度、泵出口插装阀阻尼和滑块行程等主要因素对液压机单次压制周期的影响。研究结果表明:提高下内模冲油缸速度、增大泵出口插装阀阻尼、缩短滑块行程等方法均可有效地缩短精整液压机的单次压制周期,提高液压机的压制频次,单次时间控制在6.1 s,满足压机的设计要求。
Aiming at the problem that the press frequency of 250T metal powder sizing hydraulic press could not meet the needs of design,the main factors affecting the pressing frequency,such as the cylinder speed of lower inner die,the damping of pump outlet cartridge valve and the stroke of the slide block were studied.The working principle of the hydraulic system of 250T metal powder sizing hydraulic press was analyzed.The model of DG25 directional cartridge valve was built by AMESim,and the correctness of the model was verified through simulation.The simulation model of the hydraulic system of the 250T metal powder sizing hydraulic press was built,and the influences of the cylinder speed of lower inner die,the damping of pump outlet cartridge valve and the stroke of the slide block in the single pressing period were studied respectively.The results indicate that increasing the cylinder speed of lower inner die,increasing the damping size of the pump outlet cartridge valve and shortening the stroke of the slide block can effectively shorten the single pressing cycle of the press,increase the pressing frequency,the single time is controlled at 6.1 s,and meet the requirements of design.
作者
曹传剑
宋慧
姜云春
王培芹
于晓
宗成国
CAO Chuan-jian;SONG Hui;JIANG Yun-chun;WANG Pei-qin;YU Xiao;ZONG Cheng-guo(School of Intelligent Manufacturing,Qingdao Huanghai University,Qingdao 266427,China;College of Mechanical and Electronic Engineering,Shandong University of Science and Technology,Qingdao 266427,China;School of Mechanical and Automotive Engineering,Qingdao University of Technology,Qingdao 266427,China)
出处
《机电工程》
CAS
北大核心
2021年第4期479-483,共5页
Journal of Mechanical & Electrical Engineering
基金
山东省自然科学基金培养基金资助项目(ZR2019PEE028)
山东省重点研发计划资助项目(2019GGX105001)。
关键词
液压机系统
粉末精整
压制频次
仿真模型
hydraulic press system
metal powder sizing
press frequency
simulation model
