闭式双点框架式机械压力机机身结构的拓扑-几何优化设计  

Topology-geometry optimization design on frame structure for closed double-point frame mechanical press

作　　者：颜健 张兆华[3] 郭洪昌 王达 梅碧舟 Yan Jian;Zhang Zhaohua;Guo Hongchang;Wang Da;Mei Bizhou(School of Mechanical Engineering,Tianjin University,Tianjin 300350,China;School of Mechanical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;Zhejiang Yiduan Precision Machinery Co.,Ltd.,Ningbo 315702,China)

机构地区：[1]天津大学机械工程学院,天津300350 [2]湖南科技大学机电工程学院,湖南湘潭411201 [3]浙江易锻精密机械有限公司,浙江宁波315702

出　　处：《锻压技术》2024年第4期169-177,共9页Forging & Stamping Technology

基　　金：宁波市重点研发计划暨“揭榜挂帅”项目(2022Z035)。

摘　　要：以APE400闭式双点整体框架式压力机为对象,针对质量占比大且承载关键的机身底座和立柱,开展面向制造的机身结构拓扑-几何参数优化研究。分析了原压力机机身结构的静力学性能,明确了下模具与底座固定和滑动摩擦接触两种连接方式对其变形的影响,后者台面变形要大于前者,采用滑动摩擦接触模拟验证机身结构更为保守且更贴近实际。而后,采用变密度拓扑优化方法,分别获得了支撑模具的底座、机身侧立柱的材料拓扑构成,并根据实际板焊接制造工艺,建立了机身新型结构的参数化模型。最后,采用响应面优化方法进行几何参数寻优,对比了优化模型与原机型的性能指标。结果表明,当模具上台面变形差值在0.19 mm时能实现减重3130 kg,而与原机型的变形差值相同(0.26 mm)时能减重3803 kg,减重比达到18.46%,结构轻量化效果非常显著。For APE400 closed double-point integral frame press,the topology-geometry parameter optimization study of the frame structure for manufacturing was carried out,aiming at the critical load-bearing frame base and column with large mass proportion.Then,the static mechanical properties of the original press frame structure were analyzed,and the influences of the two connection methods of fixed lower die and base and sliding friction contact on its deformation were conformed.Because the table surface deformation of latter was larger than that of former,the frame structure verified by sliding friction contact simulation was more conservative and closer to the reality.Furthermore,the material topology composition of the base supporting the die and the side columns of frame was obtained respectively by a variable density topology optimization method,and the parametric model of the new frame structure was established according to the actual plate welding manufacturing process.Finally,the geometric parameter optimization was conducted by the response surface optimization method,and the performance indexes of the optimized model and the original model were compared.The results show that the weight reduction of 3130 kg can be achieved when the deformation difference of the upper table surface for the die is 0.19 mm,and the weight reduction of 3803 kg can be achieved when the deformation difference is 0.26 mm which is the same as that of the original model,and the weight reduction ratio reaches 18.46%,which is a remarkable effect for the structural lightweight.

关 键 词：闭式压力机 拓扑优化 几何优化 服役精度 轻量化设计 

分 类 号：TH122[机械工程—机械设计及理论] TG315.5[金属学及工艺—金属压力加工]