Global Patent Index - EP 2889093 A1

EP 2889093 A1 20150701 - Cold rolling apparatus for an annular element, in particular a ring of a rolling bearing, and associated method.

Title (en)

Cold rolling apparatus for an annular element, in particular a ring of a rolling bearing, and associated method.

Title (de)

Kaltwalzvorrichtung für ein ringförmiges Element, insbesondere ein Ring eines Wälzlagers, und zugehöriges Verfahren

Title (fr)

Appareil de laminage à froid d'un élément annulaire, en particulier une bague de roulement, et procédé associé

Publication

EP 2889093 A1 20150701 (EN)

Application

EP 14195153 A 20141127

Priority

IT TO20130979 A 20131129

Abstract (en)

Apparatus (1) and method for forming by rolling annular elements (2), such as rings of rolling bearings, from an annular blank workpiece (3); wherein the annular blank workpiece is sandwiched between a mandrel (4) which is axially symmetric with respect to a first axis and a forming tool (5) which is axially symmetric with respect to a second axis, arranged parallel to the first axis, which are rotating about the first and second axis; axial locking shoulders (15) are impressed on the annular blank workpiece (3) by means of a plurality of projections (14) carried by a first lateral surface (13) of the forming tool (5) which are coaxial with the second axis and are arranged mutually side by side and spaced apart in axial direction.

IPC 8 full level

B21H 1/12 (2006.01); B21H 1/06 (2006.01); B21H 7/18 (2006.01)

CPC (source: EP)

B21H 1/12 (2013.01); B21H 1/06 (2013.01); B21H 7/182 (2013.01)

Citation (applicant)

Citation (search report)

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 2889093 A1 20150701; IT TO20130979 A1 20150530

DOCDB simple family (application)

EP 14195153 A 20141127; IT TO20130979 A 20131129