吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (6): 1723-1728.doi: 10.13229/j.cnki.jdxbgxb201406029

Previous Articles     Next Articles

Rapid adjusting of fundamental units in process of flexible 3D stretch-bending

GAO Song1, 2, LIANG Ji-cai1, 2, CHEN Guang-yi1, 2, WEI Zhi-yong1, 2, TENG Fei1, 2   

  1. 1.State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China;
    2.School of Automotive Engineering, Dalian University of Technology, Dalian 116024, China
  • Received:2013-07-17 Online:2014-11-01 Published:2014-11-01

Abstract: A flexible 3D stretch-bending process was developed based on the idea of multi-point forming technique. To realize precise 3D shape of the profile, the freedom of single multi-point die in the process of 3D stretch-bending was analyzed first, and the structure of fundamental unit with 4-DOF was designed. Then, the calculation method of unit adjusting parameters was presented, and a combination of serial and parallel adjustment control method was proposed. In addition, the mathematical model of the unit was set up. With the structural component of high-speed trains as an example, 3D stretch-bending test was carried out. The experimental results show that the flexible 3D stretch-bending equipment meets the practical requirements. Compared with manual adjustment, automatic unit adjustment can improve the production efficiency by 60%, as well as reduce labor intensity.

Key words: metallic materials, metal forming, 3D stretch-bending, fundamental units, shape adjustment, flexible forming

CLC Number: 

  • TG335.9
[1] Yu Cheng-long, Li Xiao-qiang. Theoretical analysis on springback of L-section extrusion in rotary stretch bending process[J]. Transactions of Nonferrous Metals Society of China(English Edition), 2011, 21(12):2705-2710.
[2] Miller J E, Kyriakides S, Bastard A H. On bend-stretch forming of aluminum extruded tubes-I: experiments[J]. International Journal of Mechanical Sciences, 2001, 43(5):1283-1317.
[3] Li Xiao-qiang, Li Hui,Li Dong-sheng. Springback simulation in stretch bending of aluminum extrusions using static implicit and dynamic explicit FE codes[J]. Advanced Materials Research, 2011, 295-297:1606-1612.
[4] 李小强, 周贤宾, 金朝海,等. 基于有限元模拟的三维型材拉弯轨迹设计[J]. 航空学报, 2009,30(3):544-550. Li Xiao-qiang, Zhou Xian-bin, Jin Chao-hai,et al. Design of stretch bending trajectory based on finite element simulation for three-dimensional profile parts[J]. ACTA Aeronautica ET Astronautica Sinica, 2009, 30(3):544-550.
[5] Vollertsen F, Sprenger A, Kraus J, et al. Extrusion, channel, and profile bending: a review[J]. Journal of Materials Processing Technology, 1999, 87(1-3):1-27.
[6] Chatti S, Hermes M, Tekkaya A E,et al. The new TSS bending process: 3D bending of profiles with arbitrary cross-sections[J]. CIRP Annals-Manufacturing Technology,2010, 59(1):315-318.
[7] Gong Xue-peng, Li Ming-zhe,Hu Zhi-qing, et al. Research on continuous multi-point forming technology for three-dimensional sheet metal[J]. International Journal of Materials and Product Technology, 2010, 38(2-3):210-222.
[8] 于沛洲,宋相军. 多点控制三维拉弯扭转成形模具[P]. 中国, CN202192139U, 2012-04-18.
[9] Li M Z, Cai Z Y, Sui Z, et al. Multi-point forming technology for sheet metal[J]. Journal of Materials Processing Technology, 2002, 129(1-3):333-338.
[1] ZHAO Yu-guang, YANG Xue-hui, XU Xiao-feng, ZHANG Yang-yang, NING Yu-heng. Effects of Al-10Sr modifiers with different states, modification temperature and holding time on microstructure of ZL114A alloy [J]. 吉林大学学报(工学版), 2018, 48(1): 212-220.
[2] TANG Hua-guo, MA Xian-feng, ZHAO Wei, LIU Jian-wei, ZHAO Zhen-ye. Synthesis microstructure and thermal properties of high performance bulk Al [J]. 吉林大学学报(工学版), 2017, 47(5): 1542-1547.
[3] LIU Xiao-bo, ZHOU De-kun, ZHAO Yu-guang. Microstructure and mechanical property of Mg2Si/Al composites fabricated by semi-solid extrusion under different isothermal heat treatments [J]. 吉林大学学报(工学版), 2016, 46(5): 1577-1582.
[4] LI Chun-ling, FAN Ding, WANG Bin, YU Shu-rong. 5A06 aluminum alloy and galvanized steel butt welding-brazing by laser with preset filler powder [J]. 吉林大学学报(工学版), 2016, 46(2): 516-521.
[5] ZHANG Jia-tao, ZHAO Yu-guang, TAN Juan. Effect of starting microstructure on refining potency of electro-pulsing on reverse austenite grain [J]. 吉林大学学报(工学版), 2016, 46(1): 193-198.
[6] GUAN Qing-feng, LI Yan, HOU Xiu-li, YANG Sheng-zhi, WANG Xiao-tong. Modification of solid solution Mg-Gd-Y-Nd alloy irradiated by high current pulsed electron beam [J]. 吉林大学学报(工学版), 2015, 45(4): 1200-1205.
[7] MA Yun-hai, SHANG Wen-bo, FAN Xue-ying, GAO Zhi-hui, TONG Jin, YAN Zhi-feng, CHANG Zhi-yong. Preparation and degradation of porous β-tricalcium phosphate bioceramic for bone imitaion [J]. 吉林大学学报(工学版), 2015, 45(4): 1367-1374.
[8] HUANG Jian-kang, HE Cui-cui, SHI Yu, FAN Ding. Thermodynamic analysis of Al-Fe intermetallic compounds formed by dissimilar joining of aluminum and galvanized steel [J]. 吉林大学学报(工学版), 2014, 44(4): 1037-1041.
[9] LI Xin,WANG Gang,LU Guan-han,GU Zheng-wei,XU Hong. Weldability of 22MnB5 after hot stamping by TIG welding processes [J]. 吉林大学学报(工学版), 2014, 44(3): 708-711.
[10] GUAN Qing-feng,JI Le,CAI Jie,YANG Sheng-zhi,LIU Shi-chao,ZHANG Zai-qiang,HOU Xiu-li. Surface microstructure and properties of 3Cr13 martensitic stainless steel after high current pulsed electron beam bombardment [J]. 吉林大学学报(工学版), 2014, 44(3): 712-717.
[11] CAO Jun-hui, FU Wen-zhi, LI Ming-zhe, PENG He-li. Influence factors on dimpling in multi-point thermoforming for polymer sheet [J]. 吉林大学学报(工学版), 2013, 43(06): 1536-1540.
[12] LI Ren-jun, LI Ming-zhe, XUE Peng-fei, CAI Zhong-yi, QIU Ning-jia. Method of flexible rolling for surface sheet metal [J]. 吉林大学学报(工学版), 2013, 43(06): 1529-1535.
[13] CHANG Ying, LI Ye, YING Liang, LU Jin-dong, TANG Xing-hui, GUO Wei. Effect of oxidation behavior on heat transfer dynamics performance of hot stamping steel [J]. 吉林大学学报(工学版), 2013, 43(06): 1551-1557.
[14] WANG Yun, LIU Cai, MA Li-dong, WANG Yu-feng, HUANG Qing-xue. Analysis of interval between guides during two-roll straightening process [J]. 吉林大学学报(工学版), 2013, 43(03): 677-681.
[15] WANG Su-fen, PENG Yan, LI Zhi-jie, XIAO Li-zi. Cold rolling mechanical characteristics of low carbon base plate produced by compact strip production [J]. 吉林大学学报(工学版), 2012, 42(增刊1): 221-224.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!