锻压技术

轨道车辆帽形截面不锈钢弯梁冲压成形工艺

英文标题：Stamping process of stainless steel curved beam with hat-shaped section for rail vehicle

作者：赵艳华杨俊雄

分类号：TG386

出版年,卷(期):页码：2020,45(12):72-77

摘要：

对某轨道车辆帽形截面不锈钢弯梁的冲压工艺和回弹过程进行有限元模拟研究，从位移差值和残余应力状态等方面深刻探究弯梁翼板的直线度问题并分析其原因。提出一种优化展开料方案，优化轮廓边缘直线度并消除无效成形部分；借助多因素多水平的正交试验分析得出影响不锈钢弯梁回弹的关键因素和优质水平。结果表明，当纵向半径相切值分别为328和1248 mm、凸模圆角半径和凹模圆角半径均为5 mm、上模和下模的间隙为3580 mm、动摩擦系数为016时，采用轮廓半径值分别为880和6844 mm的两段圆弧相切接合的优化展开料弯梁成形，翼板边缘的直线度达到1000∶1，回弹最大值保持在0300~0350 mm之间，回弹基本消除。

The stamping process and springback process of stainless steel curved beam with hat-shaped section for rail vehicle were studied by finite element numerical simulation, the straightness problem of curved beam wing sheet was deeply explored from the displacement difference and residual stress state, and the reasons were analyzed. Then, an optimized expanded sheet scheme was proposed to optimize the straightness of contour edge and eliminate the invalid forming part, and the key factors and the quality level affecting the springback of stainless steel curved beam were obtained by multi-element and multi-level orthogonal test analysis. The results show that when the longitudinal tangent radii are 328 and 1248 mm, the fillet radii of punch and die are both 5 mm, the clearance between punch and die is 3580 mm and the dynamic friction coefficient is 016, the optimized expanded sheet with two tangent joined radii of 880 and 6844 mm is deformed into the curved beam, and the straightness of wing sheet edge reaches 1000∶1. In addition, the maximum springback value maintains 0300-0350 mm, and the springback is basically eliminated.

基金项目：

国家自然科学基金资助项目（51101072）；吉林省科技发展计划项目（20160307015GX）

赵艳华（1977-），女，学士，工程师 E-mail：zhaoyanhua@cccarcomcn

参考文献：

［1］卢燕明, 王建宏. 城市轨道交通装备市场发展潜力巨大
［J］. 金属加工：冷加工, 2011，(24): 14-17.

Lu Y M, Wang J H. Great potential for urban railway transit equipment market development
［J］. Metalworking：Cold, 2011，(24): 14-17.

［2］赵明花, 刘玉民. 城市轨道车辆不锈钢车体的研发
［J］.城市轨道交通研究, 2004,（1）: 76-80.

Zhao M H, Liu Y M. Development of stainlesssteel body for urban railway vehicles
［J］. Urban Mass Transit, 2004, （1）: 76-80.

［3］谷诤巍, 蔡中义,徐虹,等. 帽形截面冷冲压件的回弹分析及补偿
［J］. 清华大学学报：自然科学版, 2010, 50(2): 200-203.

Gu Z W, Cai Z Y, Xu H, et al. Springback analysis and compensation of hat section cold stamping part
［J］. Journal of Tsinghua University：Natural Science, 2010, 50(2): 200-203.

［4］朱东波, 孙琨, 李涤尘, 等. 板料成形回弹问题研究新进展
［J］. 塑性工程学报, 2000, 7（1）: 11-17.

Zhu D B, Sun K, Li D C, et al. New progress in research on springback of sheet metal forming
［J］. Journal of Plasticity Engineering, 2000, 7（1）: 11-17.

［5］蔡霞. 多角弯曲件冲压回弹预测研究
［D］. 广州：华南理工大学, 2010.

Cai X. Research on Springback Prediction of Multiangle Bending Parts
［D］. Guangzhou：South China University of Technology, 2010.

［6］Wang C T, Kinzel G, Altan T. Mathematical modeling of planestrain bending of sheet and plate
［J］. Journal of Materials Processing Technology, 1993, 39(3-4): 279-304.

［7］陈喜娣, 蔡中义, 李明哲. 板料无压边多点成形中回弹的数值模拟
［J］. 塑性工程学报, 2003, 10（5）: 9-13.

Chen X D, Cai Z Y, Li M Z. Numerical simulation of springback in freeblank sheet metal multipoint forming
［J］. Journal of Materials Processing Technology, 2003, 10（5）: 9-13.

［8］Andersson A. Numerical and experimental evaluation of springback in advanced high strength steel
［J］. Journal of Materials Engineering and Performance, 2007, 16:301-307.

［9］Chongthairungruang B, Uthaisangsuk V, Suranuntchai S, et al. Springback prediction in sheet metal forming of high strength steels
［J］. Materials and Design, 2013, 50:253-266.

［10］杜俊雷. 板材帽形件智能化弯曲参数实时识别及实时预测的研究
［D］. 秦皇岛：燕山大学, 2007.

Du J L. Research on the Realtime Recognition and Realtime Prediction of the Intelligent Bending Parameters of Hatshaped Sheet
［D］. Qinhuangdao: Yanshan University, 2007.

［11］Zhang Z T, Lee D. Development of a new model for plane strain bending and springback analysis
［J］. Journal of Materials Engineering and Performance, 1995, 4(3):291-300.

［12］薛峰. 汽车覆盖件冲压成形性分析及回弹研究
［D］. 南京：南京理工大学, 2009.

Xue F. Analysis of Stamping Formability of Automobile Panels and Research on Springback
［D］. Nanjing: Nanjing University of Science and Technology, 2009.

服务与反馈：

【文章下载】【加入收藏】