Global patent index - EP 1080802 A2

EP 1080802 A2 2001-03-07 - Fastening mechanism in a tool for a hydroforming process

Title (en)

Fastening mechanism in a tool for a hydroforming process

Title (de)

Befestigungsvorrichtung in einem Werkzeug zum Innenhochdruck-Umformverfahren

Title (fr)

Dispositif de fixation dans un outil pour un procédé d' hydroformage

Publication

EP 1080802 A2 (DE)

Application

EP 00117136 A

Priority

DE 19939512 A

Abstract (en)

The guide bushing (5) is clamped in the tool (1,2) in the form of a clamping ring (7,7a,7b) concentrically enclosing part of the bushing length, the ring in turn connected to a pressure source (9). The ring is pre-tensioned by a screw (8) arranged in the block (4) and balls allocated to the block recesses form retractable and extendable part of the bushing (5). The block itself is pre-tensioned into the tool and is ringed in part concentrically by a flexible clamping ring made of yielding material and also connected to a pressure source (12).

Abstract (de)

Bei einer Vorrichtung zum Befestigen eines stempelartigen Gegenhalters (6) oder eines Stanz- bzw. Lochstempels (6) zum Ausschneiden eines Ausschnitts aus der Wandung eines in einem Umformwerkzeug (1) nach dem Innenhochdruck-Umformverfahren hergestellten Hohlkörpers, wobei der Gegenhalter oder Stanzstempel (6) in einer Buchse (5) geführt ist, die von einer in dem Umformwerkzeug (1; 2) angeordneten Kulisse (4) aufgenommen ist, wird die Führungsbuchse (5) durch einen Klemmsitz im Werkzeug (1; 2) festgelegt. Weiterhin kann auch die Kulisse (4) durch Klemmung gehalten werden. <IMAGE>

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

B21D 26/02

IPC 8 full level (invention and additional information)

B21D 37/14 (2006.01); B21D 26/02 (2011.01); B21D 26/035 (2011.01); B21D 26/047 (2011.01); B21D 37/00 (2006.01)

CPC (invention and additional information)

B21D 26/047 (2013.01); B21D 26/035 (2013.01); B21D 37/00 (2013.01); Y10T 83/9476 (2015.04)

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 19939512 A1 20010222; EP 1080802 A2 20010307; EP 1080802 A3 20030102; JP 2001096322 A 20010410; KR 20010050131 A 20010615; US 6260393 B1 20010717

INPADOC legal status

2003-09-17 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20030301

2003-01-02 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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

2003-01-02 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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- Free Format Text: AL;LT;LV;MK;RO;SI

2001-03-07 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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

2001-03-07 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: AL;LT;LV;MK;RO;SI