EP 0610706 A1 19940817 - Improvement in a plate bending process and related machine.
Title (en)
Improvement in a plate bending process and related machine.
Title (de)
Verbesserung in einem Blechbiegeverfahren und zugehörige Maschine.
Title (fr)
Amélioration dans une méthode de pliage des tÔles et machine associée.
Publication
Application
Priority
IT PN930005 A 19930208
Abstract (en)
Process for bending a plate (1) of press-formable material, comprising the use of a blank-holder means (4) to firmly hold the plate on its horizontal plane between said blank-holder means and an appropriate anvil (2), and the subsequent actuation of a knife-shaped tool (11) to perform the bending operation, in which said actuation of said knife-shaped tool (11) consists of a first purely translational movement and a second purely rotational movement, wherein said first purely translational movement brings about a first bending by a 90 DEG -angle of the edge portion of the plate to be bent, and said second purely rotational movement is effective in increasing the bending angle to any greater angle than 90 DEG . <IMAGE>
IPC 1-7
IPC 8 full level
B21D 5/04 (2006.01)
CPC (source: EP)
B21D 5/042 (2013.01); B21D 5/045 (2013.01)
Citation (search report)
- [XA] EP 0089904 A1 19830928 - PAUZIN ALEXIS
- [XA] PATENT ABSTRACTS OF JAPAN vol. 8, no. 132 (M - 303)<1569> 20 June 1984 (1984-06-20)
- [XA] PATENT ABSTRACTS OF JAPAN vol. 13, no. 163 (M - 816) 19 April 1989 (1989-04-19)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0610706 A1 19940817; EP 0610706 B1 19961009; AT E143839 T1 19961015; DE 69400647 D1 19961114; DE 69400647 T2 19970507; ES 2095687 T3 19970216; IT 1265553 B1 19961122; IT PN930005 A0 19930208; IT PN930005 A1 19940808
DOCDB simple family (application)
EP 94100971 A 19940124; AT 94100971 T 19940124; DE 69400647 T 19940124; ES 94100971 T 19940124; IT PN930005 A 19930208