Title:
【発明の名称】金属板を機械加工するための方法と装置
Document Type and Number:
Japanese Patent JP2000512552
Kind Code:
A
Abstract:
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.
Inventors:
Mayer, Schilt
Application Number:
JP53515297A
Publication Date:
September 26, 2000
Filing Date:
March 25, 1997
Export Citation:
Assignee:
Mayer, Schilt
International Classes:
B21D17/04; B21H8/00; (IPC1-7): B21D17/04; B21H8/00
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)