Global Patent Index - EP 1037722 A1

EP 1037722 A1 2000-09-27 - DEVICE AND METHOD FOR PRODUCING SHELL-SHAPED METAL PARTS AND SHELL-SHAPED METAL PART

Title (en)

DEVICE AND METHOD FOR PRODUCING SHELL-SHAPED METAL PARTS AND SHELL-SHAPED METAL PART

Title (de)

VORRICHTUNG UND VERFAHREN ZUM HERSTELLEN SCHALENFÖRMIGER BAUTEILE AUS METALL SOWIE SCHALENFÖRMIGES BAUTEIL AUS METALL

Title (fr)

DISPOSITIF ET PROCEDE POUR PRODUIRE DES PIECES EN FORME DE COQUE EN METAL ET PIECE EN FORME DE COQUE AINSI OBTENUE

Publication

EP 1037722 A1 (DE)

Application

EP 99960800 A

Priority

  • DE 9903380 W
  • DE 19848290 A

Abstract (en)

[origin: DE19848290A1] The invention relates to a device (10) and a method for producing shell-shaped metal parts, especially for fuel tanks for motorcycles or the like, wherein said parts are produced from flat or preshaped sheet metal elements (40) by means of hydrostatic forming. In order to easily and economically produce particularly complex and generally undercut geometric shapes of parts for outer and/or inner shells of motorcycle tanks without the central welding seams required until now, the device (10) includes a first die part embodied as a core element (11) and a second die part (20). The die parts (11, 20) can be positioned in relation to each other using positioning means in such a way that they limit a forming cavity (30) and wherein at least one metal sheet element (40) is clamped between the die parts (11, 20) by means of sealing surfaces (17, 26, 27) and is formed hydrostatically in the forming cavity (30). The second die part (20) is disposed around the core element (11) in such a way that the positioned core element (11) is surrounded in certain areas by the second die part (20). When the formed sheet metal element (40) has undercuts, the second die part (20) consists of two (21, 22) or more parts for easy removal of the sheet metal element (40).

IPC 1-7 (main, further and additional classification)

B21D 26/02

IPC 8 full level (invention and additional information)

B21D 26/02 (2011.01); B21D 26/021 (2011.01); B21D 26/031 (2011.01); B21D 51/18 (2006.01); B21D 53/86 (2006.01)

CPC (invention and additional information)

B21D 26/021 (2013.01); B21D 26/02 (2013.01); B21D 26/031 (2013.01); B21D 51/18 (2013.01); B21D 53/86 (2013.01)

Citation (search report)

See references of WO 0023211A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19848290 A1 20000504; DE 19848290 C2 20020529; AU 1768800 A 20000508; EP 1037722 A1 20000927; WO 0023211 A1 20000427

INPADOC legal status


2004-12-22 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040616

2003-10-08 [19U] DATE OF INTERRUPTION (INTERRUPTION OF PROCEEDINGS) BEFORE GRANT

- Effective date: 20021201

2003-10-08 [19W] DATE OF RESUMPTION (AFTER INTERRUPTION OF PROCEEDINGS) BEFORE GRANT

- Effective date: 20040205

2002-09-25 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020813

2000-09-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000508

2000-09-27 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE