Title:
METHOD FOR MANUFACTURING THREE-DIMENSIONAL, CELLULAR STRUCTURE COMPONENTS CONSISTING OF TWO METAL SHEETS, AND ASSOCIATED COMPONENTS
Document Type and Number:
WIPO Patent Application WO2000035612
Kind Code:
A3
Abstract:
A method for manufacturing three-dimensional, cellular structure components consisting of two metal sheets, comprising a starting step of separately pressing a first (22) and a second (23) metal sheet so that they assume respective three-dimensional shapes (R1, R2) compatible with each other, wherein at least one (23) of the sheets is provided along its surface with a cellular structure defining a plurality of depressions (26) and protrusions (27) reciprocally spaced and continuously distributed along the surface, and a successive step of joining the two previously pressed sheets (22, 23) together rigidly and permanently in a joining process, so as to constitute a cellular component (21) having a three-dimensional shape (R3). Preferably the cellular structure is produced at the same time as the three-dimensional shape (R2) by pressing the corresponding sheet (23), using the same mould. The method considerably extends the current possibilities of producing components made of two sheets, having a three-dimensional, even complex, shape together with good rigidity and at low cost, such as for example the engine bonnet (101) and other parts, external or internal, of a motor vehicle.
Inventors:
AMIDEI DARIO (IT)
Application Number:
PCT/IT1999/000406
Publication Date:
October 12, 2000
Filing Date:
December 09, 1999
Export Citation:
Assignee:
DELTA DI AMIDEI DARIO & C SAS (IT)
AMIDEI DARIO (IT)
AMIDEI DARIO (IT)
International Classes:
B21D47/00; B62D25/00; B62D25/02; B62D25/06; B62D25/10; E04C2/32; (IPC1-7): B21D47/00; B62D25/00; E04C2/32
Foreign References:
| FR2621677A1 | 1989-04-14 | |||
| FR1045315A | 1953-11-25 | |||
| DE19503166A1 | 1996-08-08 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 017, no. 651 (M - 1519) 3 December 1993 (1993-12-03)
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