Global Patent Index - EP 0841105 A3

EP 0841105 A3 2000-01-26 - Method for extruding of a cup-shaped part

Title (en)

Method for extruding of a cup-shaped part

Title (de)

Verfahren zum Fliesspressen eines napfförmigen Teils

Title (fr)

Procédé pour le filage d'une pièce en forme de godet

Publication

EP 0841105 A3 (DE)

Application

EP 97119363 A

Priority

DE 19645954 A

Abstract (en)

[origin: EP0841105A2] The component (10) is extruded from approximately a cylindrical blank (1) using a fluid lubricant. A die is used to form recesses (3) on the inner wall surface of the blank, before the extrusion process takes place, and preferably used to form a recessed centering shoulder (2) and the recesses simultaneously. The recesses extending to the edge of the shoulder are channel-shaped, and positioned at even relative distances. They have mainly semi-circular profile. The blank is preheated, and forming method may be reverse extrusion, forward extrusion, lateral extrusion, or a combination.

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

B21C 23/32; B21C 23/18; B21C 23/20

IPC 8 full level (invention and additional information)

B21C 23/18 (2006.01); B21C 23/20 (2006.01); B21C 23/32 (2006.01)

CPC (invention and additional information)

B21C 23/186 (2013.01); B21C 23/205 (2013.01); B21C 23/32 (2013.01)

Citation (search report)

  • [A] BE 551053 A
  • [A] US 4129022 A 19781212 - THONNES HORST, et al
  • [A] PATENT ABSTRACTS OF JAPAN vol. 1996, no. 02 29 February 1996 (1996-02-29)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 013, no. 526 (M - 897) 22 November 1989 (1989-11-22)

Designated contracting state (EPC)

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

DOCDB simple family

EP 0841105 A2 19980513; EP 0841105 A3 20000126; EP 0841105 B1 20030326; DE 19645954 A1 19980514