| 摘要 |
<p>PCT No. PCT/NL97/00150 Sec. 371 Date Mar. 4, 1999 Sec. 102(e) Date Mar. 4, 1999 PCT Filed Mar. 25, 1997 PCT Pub. No. WO97/36702 PCT Pub. Date Oct. 9, 1997The present invention relates to a method for forming weakenings in a metal plate (8), comprising of: deforming the metal plate to a predetermined depth to form a weakening thinned portion along at least one line; and bending the metal plate along the line, characterized by displacing relative to each other the metal plate and at least one tool deforming the metal plate along the line and over at least one surface of the metal plate with a force directed substantially transversely of the metal plate and sufficient to deform the metal plate. The invention also relates to a device for performing thereof.</p> |
