EP 2407258 B1 20130703 - Method for producing a pulley for motor vehicle applications and the like provided with a plurality of V-shaped peripheral races
Title (en)
Method for producing a pulley for motor vehicle applications and the like provided with a plurality of V-shaped peripheral races
Title (de)
Verfahren zur Herstellung einer Riemenscheibe für Kraftfahrzeugsanwendungen und dergleichen mit einer Mehrzahl von V-förmigen peripheren Nuten
Title (fr)
Procédé de production d'une poulie pour applications de véhicule à moteur et similaires équipée d'une pluralité de rainures périphériques en forme de V
Publication
Application
Priority
IT TO20100602 A 20100712
Abstract (en)
[origin: EP2407258A1] A method for producing a pulley (1) for motor vehicle applications and the like provided with a plurality of V-shaped peripheral races (7) is described; the method is carried out from a flat disc (11) and comprises the steps of: a) performing a drawing operation on the disc (11) to obtain a first cup-shaped semifinished product (12) having a flat base wall (13) and a side wall (14) joined to the base wall (13); b) obtaining a through-bore (16) through the base wall (13) of the first semifinished product (12); c) plastically deforming the first semifinished product (12) so as to fold an end portion, opposite to the bore (16), of the side wall (14) towards the axis (A) of the first semifinished product (12) obtaining a second semifinished product (17); d) plastically deforming the second semifinished product (17) radially compressing it so as to reduce the differences in diameter between the axial sections thereof; and e) roll forming the races (7) on the outer surface of the body obtained thereby.
IPC 8 full level
B21D 53/26 (2006.01)
CPC (source: EP)
B21D 53/261 (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
DOCDB simple family (publication)
EP 2407258 A1 20120118; EP 2407258 B1 20130703; HR P20130919 T1 20131108; IT 1401009 B1 20130705; IT TO20100602 A1 20120113; PL 2407258 T3 20131231; RS 52936 B 20140228; SI 2407258 T1 20131129
DOCDB simple family (application)
EP 11173709 A 20110712; HR P20130919 T 20130927; IT TO20100602 A 20100712; PL 11173709 T 20110712; RS P20130421 A 20110712; SI 201130060 T 20110712