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Patent Searching and Data


Title:
PRESS WORKING METHOD FOR METALLIC PLATE
Document Type and Number:
Japanese Patent JPS6213223
Kind Code:
A
Abstract:

PURPOSE: To eliminate a scrap in case of end cutting, and to improve the yield by bringing a long-sized metallic plate to end cutting by a trimming/bending press in an area of an elastic deformation, and thereafter, separating a connecting part together with bending.

CONSTITUTION: A long-sized metallic plate 1 is fed to an upper die trimming/ bending punch 8 after a working hole 2 and a stopping hole 3 have been pro vided through it. In the punch 8, a lower die trimming die 7 and cutters 9A, 9B work together, and by trimming/bending, an end cut part 4 is formed. This working is executed in an elastic deformation area, therefore, a twisting deforma tion is recovered elastically. Subsequently, the metallic plate 1 is cut from a connecting part 5 together with bending, and a prescribed work 12 is formed. Accordingly, in case of end cutting, no scrap is generated, and the yield can be improved.


Inventors:
KOBAYASHI YASUMASA
Application Number:
JP15090185A
Publication Date:
January 22, 1987
Filing Date:
July 09, 1985
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
B21D28/00; B21D28/02; (IPC1-7): B21D28/00; B21D28/02
Attorney, Agent or Firm:
Hidehiko Okada