Journal of South China University of Technology (Natural Science Edition) ›› 2016, Vol. 44 ›› Issue (7): 29-33.doi: 10.3969/j.issn.1000-565X.2016.07.005

• Mechanical Engineering • Previous Articles     Next Articles

Control of Shape Deviation for Multi-Point Stretch Bending Profiles

LIANG Ji-cai1 LI Yi2   

  1. 1.Roll Forging Institute,Jilin University,Changchun 130025,Jilin,China; 2.College of Materials Science and Engineering,Jilin University,Changchun 130025,Jilin,China
  • Received:2015-08-24 Revised:2016-03-29 Online:2016-07-25 Published:2016-06-05
  • Contact: 李义(1974-)，男，博士，教授，主要从事材料加工研究． E-mail:henrylee@jlu.edu.cn
  • About author:梁继才(1960-)，男，博士，教授，主要从事材料加工研究． E-mail:liangjicai@126． com
  • Supported by:
    Supported by the Project of Special Industry Base Construction of Jilin Province(20130302010GX)

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Abstract: Firstly,the basic formation principle of multi-point stretch bending profiles was expounded,and the cau- ses as well as the influence factors of shape deviation and surface indentation defect for multi-point stretch bending profiles were analyzed.Secondly,by taking into consideration the limitations of conventional profile compensation optimization methods,a new optimization method to control shape deviation and avoid indentation defect was pro- posed.Then,an iterative model of multi-point stretch bending profiles was constructed.Finally,some experiments were carried out to verify the effectiveness of the proposed model.The results indicate that,after the iterative opti- mization of die shape and location,the shape deviation decreases greatly from the maximum 2.32mm to 0.61mm,and the surface indentation defect is controlled effectively.

Key words: profile, multi-point stretch bending, die shape, iterative optimization, shape deviation

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