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

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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

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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
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