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Patent Searching and Data


Title:
METHOD FOR FORMING METAL SHEET
Document Type and Number:
Japanese Patent JPH08224621
Kind Code:
A
Abstract:

PURPOSE: To eliminate the strain of a panel in a post-forming process by eliminating the restriction on the design and providing the variation on the design.

CONSTITUTION: This is a forming method of a metal sheet that a thin plate like metal sheet 1 arranged between an upper die 2 and a lower die 3 is pressed and deformed with the upper die 2 and the lower die. A 1st forming stage to form the metal sheet with the upper die 2 formed with a rugged shape 4 and a 1st lower die 3a arranged with a cushion pad is provided. A 2nd forming stage to form the metal sheet 1 formed in the 1st forming stage with the upper die 2 and a 2nd lower die 3b of the quality of material being harder than the 1st lower die 3a is provided.


Inventors:
TANI MICHIHIKO
TSUTSUI SHINJI
MINEMATSU TAMOTSU
MATSUYAMA KATSUHIKO
Application Number:
JP24811395A
Publication Date:
September 03, 1996
Filing Date:
September 26, 1995
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
B21D22/02; B21D22/10; B21D22/12; B21D31/00; (IPC1-7): B21D22/02; B21D22/10; B21D22/12; B21D31/00
Attorney, Agent or Firm:
Ishida Chochichi (2 outside)