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Abstract: Presents
recent progresses of authors research on key techniques for sheet metal
forming of automotive body components. Topics discussed include the
skew―drawbead technique, the module―based design method of moulds and
the rapid manufacturing technique based on modulization and welding of
the moulds. The skew―drawbead technique makes the drawbead not only
provide resistance to material flow but also guide the material flow in
desired direction to avoid possible wrinkles and/or fractures in the
forming process. The module―based design method designs the mould as an
assembly of modules which may be designed and manufactured independently
to facilitate the whole design and manufacturing process. The rapid
manufacturing technique manufactures the modules automatically with
specially designed devices and assemblies the modules via automatic
welding equipments. Engineering applications show that the technique can
reduce the total design and manufaeturing time by up to 30% while
maintaining desired quality of the formed components.
Key words: 汽车车身
冲压
工艺
模具
快速制造
CLC No: TG7
TP2
国家“十五”科技攻关资助项目(2001BA203B16—01). 纪念《机械工程学报》创刊50周年——“机械工程技术的历史、进展与展望”主题征文.
Received 20031023, received in revised form 20031103
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