EP 2134482 B1 20100623 - METHOD AND BENDING PRESS FOR BENDING THE EDGE STRIPS OF A METAL SHEET TO BE SHAPED INTO AN OPEN SEAM TUBE
Title (en)
METHOD AND BENDING PRESS FOR BENDING THE EDGE STRIPS OF A METAL SHEET TO BE SHAPED INTO AN OPEN SEAM TUBE
Title (de)
VERFAHREN UND ANBIEGEPRESSE ZUM ANBIEGEN DER RANDSTREIFEN EINES ZU EINEM SCHLITZROHR ZU FORMENDEN BLECHES
Title (fr)
PROCÉDÉ ET PRESSE À PLIER DESTINÉS À PLIER LES BANDES LATÉRALES D'UNE TÔLE À FORMER SOUS FORME DE TUBE FENDU
Publication
Application
Priority
- DE 2008000211 W 20080130
- DE 102007012316 A 20070309
Abstract (en)
[origin: WO2008110132A1] The invention relates to a method for bending a plane metal sheet to be shaped into an open seam tube, in a bending press (11) comprising an upper tool fixed in the press frame (4) and having a contour corresponding to the bending contour to be achieved, and a vertically mobile lower tool (3) arranged opposite the upper tool (1). The edge strip (3) of the metal sheet fixed in the press frame (4) is bent between said tools in a working step in order to create the desired edge contour. At the beginning of the bending process, the working surface of the lower tool (3), which comes into contact with the lower side of the edge strip (3), takes its bearing in a flat manner in the form of a Hertzian compression. In order to prevent the formation of ridges and plastic deformations or crushing, said flat contacting is to be maintained at a minimal distance from the edge of the metal sheet, at a constant distance therefrom in relation to the point of application of force (P), during the entire bending process, by means of a co-ordinated horizontal and vertical movement of the lower tool (3). The bending press (11) provides a constructive solution for carrying out said method.
IPC 8 full level
B21D 5/01 (2006.01); B21D 5/10 (2006.01); B21D 19/08 (2006.01)
CPC (source: EP)
B21D 5/015 (2013.01); B21D 5/10 (2013.01); B21D 19/08 (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 MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102007012316 A1 20080911; DE 102007012316 B4 20090226; DE 102007012316 B9 20090610; AT E471772 T1 20100715; CN 101626850 A 20100113; CN 101626850 B 20120425; DE 502008000845 D1 20100805; EP 2134482 A1 20091223; EP 2134482 B1 20100623; JP 2010520811 A 20100617; JP 5208973 B2 20130612; RU 2009137364 A 20110420; RU 2447960 C2 20120420; WO 2008110132 A1 20080918
DOCDB simple family (application)
DE 102007012316 A 20070309; AT 08706871 T 20080130; CN 200880007631 A 20080130; DE 2008000211 W 20080130; DE 502008000845 T 20080130; EP 08706871 A 20080130; JP 2009552057 A 20080130; RU 2009137364 A 20080130