Global Patent Index - EP 2403664 B1

EP 2403664 B1 20150916 - METHOD FOR FREE BENDING WITH AN ADJUSTABLE DIE

Title (en)

METHOD FOR FREE BENDING WITH AN ADJUSTABLE DIE

Title (de)

VERFAHREN ZUM FREIBIEGEN MIT EINEM EINSTELLBAREN GESENK

Title (fr)

PROCÉDÉ DE PLIAGE LIBRE AVEC UNE MATRICE RÉGLABLE

Publication

EP 2403664 B1 20150916 (DE)

Application

EP 10714838 A 20100304

Priority

  • AT 2010000065 W 20100304
  • AT 3502009 A 20090304

Abstract (en)

[origin: WO2010099559A1] The invention relates to an adaptive adjusting method for a bending tool assembly (1) for air bending sheet metal parts (7), wherein a die width w (12) of the snaker (3) can be varied in a direction normal to the displacement plane (6). During each bending operation, an actual thickness of the sheet metal part (7) is captured and a thickness deviation dt of the actual thickness from a target thickness is calculated. Furthermore, a correction value dw is established for the die width (12) depending on the thickness deviation dt based on a model of the bending operation, and the die width w (12) is changed by the correction value dw prior to conducting the bend forming operation. The invention further relates to a bending tool assembly (1), comprising a bending punch (2) and a snaker (3), wherein the bending punch (2) can be moved along a displacement plane (6) relative to the snaker (3). The snaker comprises a first (17) and second (18) die part, which are connected, independently from each other, detachably normal to the displacement plane (6) and longitudinally displaceably to a bench beam (5).

IPC 8 full level

B21D 5/02 (2006.01)

CPC (source: EP)

B21D 5/02 (2013.01); B21D 5/0209 (2013.01); B21D 5/0227 (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

DOCDB simple family (publication)

WO 2010099559 A1 20100910; AT 507911 A1 20100915; AT 507911 B1 20101115; EP 2403664 A1 20120111; EP 2403664 B1 20150916

DOCDB simple family (application)

AT 2010000065 W 20100304; AT 3502009 A 20090304; EP 10714838 A 20100304