EP 2308062 A1 20110413 - PROCESS FOR PRODUCING A POLE TUBE
Title (en)
PROCESS FOR PRODUCING A POLE TUBE
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES POLROHRES
Title (fr)
PROCÉDÉ DE FABRICATION D'UN TUBE POLAIRE
Publication
Application
Priority
- EP 2009005335 W 20090723
- DE 102008036007 A 20080801
Abstract (en)
[origin: WO2010012410A1] The invention relates to a process for producing a pole tube having a bushing-shaped pole tube body which is axially subdivided into a pole portion and a tube portion with a tube portion end and a stroke limiter provided with a groove, as a result of which a space for receiving an armature of the lifting magnet is formed. The process comprises: the provision of the tube portion, the provision of the stroke limiter and/or of the pole portion each with a radially encircling groove on the outer side, the arrangement of the tube portion end over the respective groove and the dimensionally accurate integral forming of the tube portion end in the groove by continuous reduction over the entire circumference of said end. This process makes it possible to produce a mechanical join with a high compressive strength at low cost, while retaining the surface properties and the properties of the material, in particular the corrosion protection, and without reprocessing. In particular, the integral forming is not carried out selectively, as in the case of crimping, but rather by uniform reduction over the entire circumference.
IPC 8 full level
H01F 7/08 (2006.01)
CPC (source: EP)
B21D 41/04 (2013.01); H01F 7/127 (2013.01); H01F 2007/163 (2013.01)
Designated contracting state (EPC)
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 SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
DE 102008036007 A1 20100204; AT E551704 T1 20120415; EP 2308062 A1 20110413; EP 2308062 B1 20120328; WO 2010012410 A1 20100204
DOCDB simple family (application)
DE 102008036007 A 20080801; AT 09777376 T 20090723; EP 09777376 A 20090723; EP 2009005335 W 20090723