EP 1710027 A2 20061011 - A process for producing a metal base plate having a projected portion formed with a slit, a die and a mold structure used in the same
Title (en)
A process for producing a metal base plate having a projected portion formed with a slit, a die and a mold structure used in the same
Title (de)
Verfahren zur Herstellung einer Metallplatte mit erhabenem und Schlitzen versehenem Teil, Matrize und Formstruktur
Title (fr)
Méthode de production d'une tôle avec projection formée avec une fente, matrice et structure de moule
Publication
Application
Priority
JP 2005111094 A 20050407
Abstract (en)
The invention provides a process, a die (1) and a mold structure for producing a metal base plate (5) having a cylindrical projected portion (11) formed with at least one slit (10) which extends from a leading end toward a base end of the cylindrical projected portion (11) by inserting a punch (3) into a die (1) through a metal base plate (5). In the producing process, the metal base plate (5) is interposed between the punch (3) and the die (1), while a hole of the die (1) having at least one projected portion (2) and the punch are aligned with a location of the cylindrical projected portion (11) to be formed and at least one ridge line (4) of a leading end portion of the punch (3) and an apex portion of the corresponding at least one projected portion (2) of the die are aligned with each other, and the punch (3) is inserted into the hole of the die through the metal base plate (5) in such a manner that the at least one slit (10) of the cylindrical projected portion (10) is formed by an edge portion of a peripheral surface of the punch (3) and the corresponding at least one projected portion (2) of the die (1) by the insertion of the punch (3) into the hole of the die (1)
IPC 8 full level
B21D 28/24 (2006.01); B21D 28/26 (2006.01); B21D 28/34 (2006.01); B21D 31/02 (2006.01)
CPC (source: EP)
B21D 28/24 (2013.01); B21D 28/26 (2013.01); B21D 28/34 (2013.01); B21D 31/02 (2013.01)
Designated contracting state (EPC)
FR GB
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
EP 1710027 A2 20061011; EP 1710027 A3 20080507; EP 1710027 B1 20091223; JP 2006289399 A 20061026; JP 4746904 B2 20110810
DOCDB simple family (application)
EP 06251920 A 20060405; JP 2005111094 A 20050407