|
(11) | EP 2 186 580 A3 |
(12) | EUROPEAN PATENT APPLICATION |
|
|
|
|
|||||||||||||||
(54) | Method and device for pressing a collar in a metal plate and collar and plate element. |
(57) The invention relates to pressing a collar in a metal plate (10), which involves
pressing a collaring portion of the plate into a forming duct for the collar and making
a hole in the plate. According to the invention, the plate (10) is stretched in a
region (R) which comprises the collaring portion (C) before the pressing of the collaring
portion (C) into the forming duct.
|