用户名: 密码: 验证码:
超薄矩形电池壳体成形工艺数值模拟及试验研究
详细信息    本馆镜像全文|  推荐本文 |  |   获取CNKI官网全文
摘要
矩形壳体零件的应用十分广泛,其典型代表是作为便携式信息终端等移动通信类产品的铿离子电池壳体。由于这类产品的轻与薄的适用性要求,对电池壳体成形的工艺和方法提出了越来越高的要求。
     论文对锂离子电池壳类零件的两种成形工艺进行了数值模拟,优化工艺参数,并以此指导模具设计,进行了工艺试验。
     论文首先研究了矩形壳体零件反挤压的重要参数—反挤压凸模的高/宽比。通过二维有限元数值模拟,得到了凸模高/宽比对壁厚影响的临界值。结合模具设计的经验,推断出了反挤压成形矩形壳体零件的临界高/宽比。
     其次,论文对反挤压零件的工艺参数进行了优化。采用数值模拟和正交试验相结合的方法,从而降低了模拟的盲目性,大大提高了优化的效率。并首次进行了反挤压+变薄拉深的三个变形阶段的连续数值模拟,非常直观地预示了整个工艺过程。
     接着,论文用优化的工艺参数对电池壳体零件的反挤压+变薄拉深成形工艺做了试验,归纳了反挤压和变薄拉深的模具设计要点和经验。其中用到了本课题组的专利技术。
     最后,论文对拉深+变薄工艺进行了成形工艺设计和数值模拟,并设计制造模具进行了相应的成形试验。
     总之,本论文以建立模型——计算机数值模拟——工艺优化——工艺试验检验为研究思路,对电池壳体零件的成形工艺进行了较为系统的研究,并用试验验证的方式证明工艺的可靠性。紧密结合实际是本论文的一个研究特色。
Rectangular shell parts are widely used in industry and our daily lives, especially used as the cover of Li-ion battery, which is a main component of portable intelligence terminal products. With the development of these mobile communication products to be much lighter and thinner, it makes demands on the formation technology and method of Li-ion battery cover.
    In this paper, two kinds of Li-ion battery cover formation methods are simulated and the optimized parameters are given out. Under the direction of the simulation results, the dies are designed and the technology experiments are done.
    The depth-width ratio of the backward extrusion male die, which is an important parameter of rectangular shell parts backward extrusion, is studied in the beginning part of the paper. The critical value is gotten through the two-dimensional simulation results, which reflects the impact of the male dies' depth-width ratio on the wall thickness. Combination with the design experience, the critical value depth-width ratio in the backward extrusion formation of rectangular shell parts is concluded.
    In the second part of the paper, the technology parameters of backward extrusion parts are optimized. Adopting numerical simulation and orthogonal tests, the optimization efficiency is improved greatly and the simulation blindness dropped down. The continuous simulation of backward extrusion and ironing is first given out in this paper, which predicts the whole technology procedure visually.
    Based on the optimized parameters, the backward extrusion and ironing formation technology experiment of shell parts is done. The die design gist and experience are concluded, which uses the patent of our research group.
    In the end of the paper, the formation technology design and simulation of drawing and ironing are given out. The dies are designed and checked out.
    Generally speaking, following the way of modeling, numerical simulation, technology optimization and experiments, the paper studies the formation technology of battery cover parts systematically and experiments are done to test the reliability of this technology. Connecting closely with reality is a noticeable character of this paper.
引文
[1] 杨长顺.冷挤压工艺实践.北京:国防工业出版社.1984.
    [2] 吴诗惇.挤压理论.北京:国防工业出版社.1993.
    [3] 周贤宾.塑性加工技术的发展—更精、更省、更净.第八届全国塑性加工学术年会全球华人先进塑性加工技术研讨会论文集,2002.1~4
    [4] 胡忠.材料加工过程计算机模拟的现状与未来.塑性工程学报.1998,5(2):1~8
    [5] 王祖唐.板料拉延成形极限理论.塑形工程学报.1996,3(2):4~6
    [6] 李德群.塑性加工技术发展状况及趋势.航空制造技术.2000,3:27~29
    [7] 罗凯文,骆先梅.任意形状坯料反挤压成形内圆筒的上限单元技术的改善分析.锻压技术.1998,4:3~8
    [8] 王东哲,娄臻亮,等.板材变压边力拉深成形方盒件数值模拟.上海交通大学学报.2001,35(10):1542~1545
    [9] 黄根良.反挤压杯形件凹模受力分析.机械研究与应用.2002,15(1):4~5
    [10] 汪锐,罗亚军,等.复杂零件多道次拉深成形的计算机仿真.塑性工程学报.2001,8(2):17~19
    [11] 闫洪,林治平等.盒形件反挤变形的上限分析.塑性工程学报.2000,7(1):26~29
    [12] 闫洪,潘伟.盒形件反挤的试验研究.南昌大学学报.1999,21(3):47~51
    [13] 米小珍,白万和,等.单模变薄拉深成形的有限元模拟.塑性工程学报.2000,7(1):73~75
    [14] 代勇.壳体变薄拉深工艺.锻压技术.2000,6:19~20
    [15] 苏娟华,陈拂晓,辛选荣.变薄拉深过程的数值模拟.锻压技术.2001,2:
    [16] 王俊彪,贾建军.多道次变薄拉深的模拟与优化设计.西北工业大学学报.1997,15(3):348~354
    [17] 邓小民.反向挤压力计算式的误差分析与实践.中国有色金属学报.2002,12(3):539~543
    [18] 胡建国.非拉深法成形盒形件.模具技术.2002,3:34~36
    [19] 姜海峰,等.变压边力拉伸的原理及实验系统.塑形工程学报.1999,6(1):30~33
    [20] 刘建华,等.内皱发生的临界计算及校核条件.锻压技术.2000,25(2):28~31
    [21] 徐丙坤,施法中,陈中奎.板料冲压成形数值模拟中的几个关键问题.塑形工程学报.2001,8(2):32~35
    [22] 朱东波,孙琨,等.板料成形回弹问题研究新进展.塑性工程学报.2000,7(1):11~17
    
    
    [23] 常志华,等.高盒形件多次拉深工艺参数的优化计算.第七届锻压学术年会论文集,1999.327~330
    [24] 谢汐,孙成智,张卫刚.材料参数及工艺参数对盒形件成形性能的影响研究.金属成形工艺.2003,21(1):41~43
    [25] 张海明,董湘怀等.汽车前照灯矩形反光镜拉深成形过程有限元模拟.锻压技术.2001,3:15~17
    [26] 阮霞,杨文兵,王乘.板料冲压成形过程的三维动态模拟.华中理工大学学报.2000,28(3):42~44
    [27] 张士宏,尚彦凌,等.用动态显式有限元法对板材成形进行计算机模拟.塑性工程学报.2001,8(1):19~24
    [28] 罗亚军,杨曦,等.板料成形中的有限元数值模拟技术.金属成形工艺.2000,18(6):1~3
    [29] 洪慎章。电池壳高长方盒形件拉深工艺及模具设计.模具技术.1998,5:49~55
    [30] 陈炜,陶宏之.基于数值模拟的板料多道次拉深工艺研究.农业机械学报.2002,33(4):95~98
    [31] 吴勇.高矩形盒拉深工艺.模具工业.1997,11:30~32
    [32] 冀志超.拉深件成形时的起皱原因及措施.金属成形工艺.200l,20(3):48~49
    [33] 杨曦,王东哲,等.板料拉深成形关键性技术研究.汽车工艺与材料.2000,11:9~12
    [34] 余雷.数值模拟在多道次拉深中对工艺参数的优化.电加工与模具.2001,6:32~35
    [35] 王鑫,孔凡新,贾俐俐.筒形件拉深计算机辅助工艺设计.江苏机械制造与自动化.2001,4:163~166
    [36] 官英平.摩擦对板料极限拉深系数的影响.金属成形工艺.2002,20(3):9~11
    [37] 鄂大辛.非回转对称拉深变形规律的研究—薄板矩形盒形件拉深的形状特性.中国机械工程.2002,13(2):137~141
    [38] 陶宏之,何丹农,彭颖红,阮雪榆。板料成形数值模拟软件的研究.锻压机械.1999,3:43~45
    [39] 滕宏春,张凤兰,任先玉.射孔弹壳冷挤压成形参数的理论研究.机械工程学报.2001,37(4):89~92
    [40] 郑晓丹,汪锐,等.方盒形件拉深摩擦状况的分析与控制.锻压技术.2001,2:40~43
    
    
    [41] 陈炜,余雷,等,车身骨架件多步冲压工艺数值模拟.第八届全国塑性加工学术年会全球华人先进塑性加工技术研讨会论文集,2002.322~327
    [42] Xie Tan, Jla Dewei, Jiang Peng, Wei Zhe. The application and development of precision plastic forming technology in China. The seventh Asia symposium on precision forging, 2000:1~6
    [43] W.T.Wu, J.P.Tang, G.Li. Recent development of process simulation and its applications tu manufacturing processes.第七届全国塑性加工理论学术会议论文集—金属塑性成形过程计算机模拟(CAE)专题会议.武汉.2002
    [44] A.Erman Tekkaya. State-art of simulation of sheet metal forming. Journal of Materials Processing T(?)molugy. 2000,103: 14~22
    [45] Rui Li,Klaus J.Weinmann. Non-symmetric panel forming of AA 611-T4 using active drawbeads. In Sheet Metal Forming Technology, M.Y. Demeri
    [46] C.Changa, Z.M.Hub, B.S.Kanga, T.A.Dean. A study of cold ironing as a post-process for net-shape manufacture. International Journal of Machine Tools & Manufacture. 42(2002): 945~952
    [47] Dong-Kyun Min, Byung-Hee Jeon. A study on process improvements of multi-stage deep-drawing by the finite-element method. Journal of Materials Processing Technology. 54(1995):230~238
    [48] Se-Ho Kim, Seung-Ho Kim, Hoon Huh. Tool design in a multi-stage drawing and ironing process of a rectangular cup with a large aspect ratio using finite element analysis. International journal of machine tools & manufacture,42(2002):863~875
    [49] T.W.Ku, B.K.Ha, W.J.Song, B.S.Kang, S.M,Hwang. Finite element analysis of multi-stage deep drawing process for high-precision rectangular case with extreme aspect ratio. Journal of material processing technology 130~131(2002): 128~134
    [50] Se-Ho Kim, Seung-Ho Kim, Hoon Huh. Design modification in a multi-stage rectangular cup drawing process with a large aspect ratio by a elastic-plastic finite element analysis. Journal of material processing technology. 113(2001):766~773
    [51] Uyyuru, Rama Krishna Valberg, Henry. Finite element analysis as a tool for the investigation of the backward cupextrusion, Modeling of Materials and its Applications in Advanced Technologies. 2002,: 235-240
    [52] T. Ishikawa, N. Yukawa, Y.Yoshida, H. Kim, Y. Tozawa. Prediction of dimensional difference of product from tool in cold backwardextrusion. CIRP Annals. 2000, 49(1): 169~172
    [53] 尉喆.直齿圆柱齿轮径向冷挤成形的理论分析和实验研究:[硕士学位论文].北京:机械科学研究院,2000
    
    
    [54] 陈火红.Marc有限元分析教程.北京:机械工业出版社,2001
    [55] 王勖成,邵敏.有限单元法基本原理和数值方法.北京,清华大学出版社,1997
    [56] 钟志华,李光耀.薄板冲压成形过程的计算机仿真与应用.北京,北京理工大学出版社,1998
    [57] 张鼎承,等.冲模设计手册.北京,机械工业出版社,1988
    [58] 王孝培.实用冲压技术手册.北京:机械工业出版社.2001.
    [59] 梁炳文,胡世光.板料成形塑性理论.北京:机械工业出版社,1987.
    [60] 谢水生,王祖唐.金属塑性成形工步的有限元模拟.北京:冶金工业出版社,1997
    [61] 《正交试验设计法》编写组.正交试验设计法.上海:上海科学技术出版社:1979
    [62] 神户制钢。Aluminium Handbook.日本:1994
    [63] 中华人民共和国国家技术监督局.GB/T 5027-1999.中华人民共和国国家标准—金属薄板和薄带塑性应变比(r值)试验方法.北京:中国标准出版社,2000-8-01
    [64] 中华人民共和国国家技术监督局.GB/T 5028-1999.中华人民共和国国家标准—金属薄板和薄带拉伸应变硬化指数(n值)试验方法.北京:中国标准出版社,2000-8-01
    [65] MARC软件技术报告.美MARC分析研究公司北京办事处

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700