EP 3351313 B1 20200415 - METHOD AND DEVICE FOR PRESSURE ROLLING
Title (en)
METHOD AND DEVICE FOR PRESSURE ROLLING
Title (de)
VERFAHREN UND VORRICHTUNG ZUM DRÜCKWALZEN
Title (fr)
PROCÉDÉ ET DISPOSITIF DE FLUOTOURNAGE
Publication
Application
Priority
EP 17151935 A 20170118
Abstract (en)
[origin: WO2018133959A1] The invention relates to a method and a device for flow forming, wherein a workpiece (5) is set in rotation with the aid of a spindle (12) and at least one outer roller (20) is moved against an outer side of the workpiece (5). An axially extending outer region of the workpiece (5) is formed by thinning the material. According to the invention, at least one inner roller (30) is moved against an inner side of the workpiece (5) with the aid of an inner support (40), which is axially and radially movable relative to the axis of rotation, independently of the outer roller (20). The inner support (40) with the inner roller (30) and an outer support with the outer roller (20) are moved independently of one another by means of a CNC control process, and a defined wall thickness profile with different wall thicknesses is formed on the outer region between the at least one outer roller (20) and the at least one inner roller (30).
IPC 8 full level
B21D 22/14 (2006.01); B21D 22/18 (2006.01); B21D 53/30 (2006.01)
CPC (source: EP KR US)
B21D 22/14 (2013.01 - EP US); B21D 22/18 (2013.01 - EP KR); B21D 53/30 (2013.01 - EP KR)
Citation (examination)
US 3287951 A 19661129 - WIDERA OTTO F
Citation (opposition)
Opponent : SSB-Maschinenbau GmbH
- EP 3351313 A1 20180725 - LEIFELD METAL SPINNING AG [DE]
- US 2013152652 A1 20130620 - ALLWOOD JULIAN M [GB], et al
- JP 2015221443 A 20151210 - MITSUBISHI ELECTRIC CORP
- DE 3545506 A1 19870702 - MAN TECHNOLOGIE GMBH [DE]
- US 2017001229 A1 20170105 - IMAMURA YOSHIHIDE [JP], et al
- DE 1916358 A1 19701008 - LEIFELD & CO
- DE 102011117034 A1 20130502 - RONAL AG [CH]
- CN 103317006 A 20130925 - UNIV XI AN JIAOTONG
- CN 105458057 A 20160406 - NANTONG HONGBO MACH CO LTD
- CN 106270087 A 20170104 - ANQING KANGWEI MOLD MFG CO LTD
- DE 2732651 A1 19790125 - KRONPRINZ AG
- EP 1389501 A1 20040218 - SPEEDLINE S R L [IT]
- CN 103691789 A 20140402 - TIANJIN HEAVY EQUIP ENG RES CO, et al
- KR 20140101221 A 20140819 - HANDS CORP LTD [KR]
- ANONYMOUS: "Autospin", MESSEKATALOG, 1980, Chicago, pages 1 - 3, XP055773155
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 3351313 A1 20180725; EP 3351313 B1 20200415; CN 110312579 A 20191008; CN 110312579 B 20211008; EP 3682981 A1 20200722; EP 3682981 B1 20230607; ES 2789473 T3 20201026; JP 2020507478 A 20200312; KR 102281547 B1 20210723; KR 20190108116 A 20190923; US 11565300 B2 20230131; US 2019374991 A1 20191212; WO 2018133959 A1 20180726
DOCDB simple family (application)
EP 17151935 A 20170118; CN 201780084022 A 20171017; EP 20159889 A 20170118; EP 2017076444 W 20171017; ES 17151935 T 20170118; JP 2019559160 A 20171017; KR 20197021598 A 20171017; US 201716476013 A 20171017