A device for holding a blank in a fluid cell press and a fluid cell press

作者: Lennart Svensson , Keijo Hellgren

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摘要: A device for holding, in a braking manner, preferably sheet-formed blank (31) when forming the fluid cell press. During forming, hydraulic pressure is applied, via an elastic diaphragm (4), to one side of blank. The comprises first means (18) generating holder and second (15, 16, 17a) supplying this movable member (14) maintaining pressure. adapted, as long maintained, hold part manner against support (13). To improve result, (20) which, under direct influence pressure, reduce attains predetermined value.

参考文章(3)
Herbert G Johnson, Diaphragm-type sheet forming method ,(1969)
Lennart Svensson, Keijo Hellgren, Method for forming sheet metal parts ,(1992)