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Abstract：
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Blank holder structure and blank holder force(BHF)are very important to the part quality in deep drawing. The forming of rectangular parts was studied by segment variable BHF.Firstly,the drawing system of segment varia- ble BHF for rectangular box was constructed,the hydraulic device of blank holder and the principle of control system was introduced,and then the performance parameters of sheet were measured by electronic universal testing machine CSS-44000 and the forming process was analyzed using the finite element method based on explicit algorithm,finally rectangular box was obtained by controlling segment variable BHF.The BHF could be reasonably changed with the wrinkling law by control system,so the flange form.ability and the parts quality could be enhanced.
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Funds：
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国防基础科研项目(D0620070101)
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AuthorIntro：
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Reference：
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