EP 2826571 A2 20150121 - Method for manufacturing a pulley for motor vehicle applications
Title (en)
Method for manufacturing a pulley for motor vehicle applications
Title (de)
Verfahren zur Herstellung einer Riemenscheibe für Kraftfahrzeuganwendungen
Title (fr)
Procédé de fabrication d'une poulie pour applications dans des véhicules à moteur
Publication
Application
Priority
IT TO20130533 A 20130628
Abstract (en)
The invention relates to a method for manufacturing a pulley (1) for motor vehicle applications starting from a plane disk (21), which has a central axis (A) and defines a reference plane (P) orthogonal to said axis (A); the method comprises the steps of: bending an annular peripheral portion (51) of the disk (21) in a direction transverse to the reference plane (P) so as to define a rim (59) in relief; deforming, in a first axial direction (S), a central portion (52) of the disk (21) so as to generate a first cup-shaped portion (53); deforming, in a second axial direction (T) opposite to the first direction (S), a central portion of the first cup-shaped portion (53) so as to generate a second cup-shaped portion (86) axially projecting from the opposite side of the reference plane (P) with respect to the rim (59); reducing the axial height of the second cup-shaped portion (86) with respect to the reference plane (P) so as to increase the thickness thereof; and carrying out a coining operation on a surface (13) of the second cup-shaped portion (86) that is parallel to the reference plane (P) and faces the opposite side of the reference plane (P) itself to generate a plurality of radial impressions (15).
IPC 8 full level
B21D 22/24 (2006.01); B21D 37/02 (2006.01); B21D 53/26 (2006.01); B21K 1/42 (2006.01)
CPC (source: EP)
B21D 22/24 (2013.01); B21D 37/02 (2013.01); B21D 53/261 (2013.01); B21K 1/30 (2013.01); B21K 1/42 (2013.01); B21K 23/00 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2826571 A2 20150121; EP 2826571 A3 20150422; EP 2826571 B1 20160615; ES 2591152 T3 20161125; IT TO20130533 A1 20141229; PL 2826571 T3 20170131
DOCDB simple family (application)
EP 14174834 A 20140627; ES 14174834 T 20140627; IT TO20130533 A 20130628; PL 14174834 T 20140627