EP 2353743 A1 20110810 - Tool for bending metal sheets
Title (en)
Tool for bending metal sheets
Title (de)
Werkzeug zum Biegen von Blechen
Title (fr)
Outil de cintrage de tôles
Publication
Application
Priority
IT PN20100002 A 20100115
Abstract (en)
The invention proposes the construction of a tool for bending metal sheets without requiring the lubrication of the devices involved in said tool, but only exposing one surface of the tool to a particular hardening treatment that also guarantees a very low frictional resistance; said tool includes a first body (1) with a shaped seat (2) partially in the shape of a cylinder provided with a relative axis (X), and accessible from outside through a suitable mouth (4), a second elongate body (3) having a partially cylindrical external surface and housed in said seat (2) which is suitable to almost completely surround the first body (1) and to allow its rotation around an axis of rotation coinciding with the axis of the external cylindrical surface, and with the axis (X) of the first body, and wherein the second body is provided with a V-shaped groove that extends lengthwise and is open to the outside through said mouth (4) for at least one part of the rotation of the second body (3) within said seat (2) of the first body (1), wherein the external cylindrical surface of the second body (3) is provided with one or preferably two successive distinct coatings, achieved with the "PVD" technology. In the case in which two distinct coatings are provided one over the other, the first coating, bonded to said surface, has a hardness greater than the hardness of the second coating. The first coating includes one or at the same time more than one of the following hard substances: Titanium nitride (TiN), Chromium nitride (CrN), Titanium carbonitride (TiCN), Titanium and aluminium nitride (AlTiN).
IPC 8 full level
B21D 5/04 (2006.01); B21D 5/02 (2006.01); B21D 19/08 (2006.01)
CPC (source: EP)
B21D 5/0209 (2013.01); B21D 5/042 (2013.01); B21D 19/08 (2013.01); B21D 37/18 (2013.01)
Citation (applicant)
- US 4002049 A 19770111 - RANDOLPH SR ALLAN EMERSON
- US 5341669 A 19940830 - KATZ WOLFGANG [DE]
- US 2005022574 A1 20050203 - CHUN VICTOR [US], et al
- WO 2008144237 A1 20081127 - DANLY IEM LLC [US], et al
- EP 1502671 A1 20050202 - DANLY IEM [US]
Citation (search report)
- [Y] EP 1051267 B1 20060208 - READY TECHNOLOGY INC [US]
- [AD] US 5341669 A 19940830 - KATZ WOLFGANG [DE]
- [AD] US 2005022574 A1 20050203 - CHUN VICTOR [US], et al
- [AD] WO 2008144237 A1 20081127 - DANLY IEM LLC [US], et al
- [A] US 2002104363 A1 20020808 - MAIDA TAKAAKI [JP]
- [Y] FIRMA SCHOLL GMBH: ""PVD-Beschichtung (PVD=Physical Vapour Deposition)"", 24 May 2006 (2006-05-24), pages 1 - 4, XP002641852, Retrieved from the Internet <URL:http://www.glas-scholl.de/arbeitsg/glaserei/esg/schiebetuer/hiska/Farbtoene/was%20ist%20pvd.html> [retrieved on 20110614]
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2353743 A1 20110810; EP 2353743 B1 20120321; AT E550114 T1 20120415; IT 1397559 B1 20130116; IT PN20100002 A1 20110716
DOCDB simple family (application)
EP 11150355 A 20110107; AT 11150355 T 20110107; IT PN20100002 A 20100115