双曲率薄壁铝合金盒形件充液成形工艺  

Hydroforming process on double curvature thin-walled aluminum alloy box part

作　　者：于弘喆 姜秀玉[3] 樊彬彬[3] 吴华东 王林 郎利辉[4] 米新征 Yu Hongzhe;Jiang Xiuyu;Fan Binbin;Wu Huadong;Wang Lin;Lang Lihui;Mi Xinzheng(Tianjin Tianduan Press Co.,Ltd.,Tianjin 300142,China;Tianjin Tianduan Aviation Technology Co.,Ltd.,Tianjin 300142,China;Shenyang Aircraft Industry(Group)Co.,Ltd.,Shenyang 110850,China;School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,China)

机构地区：[1]天津市天锻压力机有限公司,天津300142 [2]天津天锻航空科技有限公司,天津300142 [3]沈阳飞机工业(集团)有限公司,辽宁沈阳110850 [4]北京航空航天大学机械工程及自动化学院,北京100191

出　　处：《锻压技术》2023年第2期94-101,共8页Forging & Stamping Technology

摘　　要：双曲率薄壁铝合金盒形件是一种常见的飞机内蒙皮类钣金零件。针对目标零件采用传统落压成形过程中存在的生产效率低、表面质量差的问题,采用充液成形工艺成形该类零件,其目的在于提高零件表面质量并降低模具成本。通过数值模拟软件,建立了双曲率薄壁铝合金盒形件主动式充液成形的有限元模型,通过分析液室压力、压边力加载路径、润滑条件等因素对零件成形性的影响,对零件成形的起皱和破裂情况进行分析,优化确定最佳的工艺参数。并依据优化后的工艺参数进行了现场实验,利用数值模拟技术分析和解决了现场实验零件的质量问题,成功制造出合格零件,进一步验证了工艺方案及工艺参数的可行性。Double curvature thin-walled aluminum alloy box part is a common aircraft skin sheet metal part.Aiming at the problems of low production efficiency and poor surface quality in the traditional blanking process of the target parts,the hydroforming process is used to form the parts to improve the surface quality of the parts and reduce the die cost.Therefore,the finite element model of hydroforming for double curvature thin-walled aluminum alloy box parts was established by the numerical simulation software,and through analyzing the influences of liquid chamber pressure,blank holder force loading path,lubrication conditions and other factors on the formability of the parts,the wrinkling and cracking situations of the parts forming were analyzed,and the optimum process parameters were optimized.Then,the field experiment was carried out according to the optimized process parameters,and the quality problems of the field experiment parts were analyzed and solved by numerical simulation technology.Finally,the qualified parts were successfully manufactured,and the feasibility of the process scheme and the process parameters was further verified.

关 键 词：充液成形 双曲率薄壁铝合金盒形件 液室压力 压边力加载路径 润滑条件 起皱 破裂 

分 类 号：TG394[金属学及工艺—金属压力加工]