Title:
BENDING DIE SET, PUNCH, AND BENDING MACHINE
Document Type and Number:
Japanese Patent JP2005329414
Kind Code:
A
Abstract:
To suppress the wear of a die 9 in the neighborhood of its shoulder portion and the wear of a punch 7 in the neighborhood of its tip end portion.
The punch 7 comprises a punch body 11, and a rotary rod 15 for the punch, the rotary rod 15 being configured so as to have the hardness considerably higher than that of the punch body 11. The die 9 comprises a die body 21, and a rotary rods 25 for the die, the rotary rods 25 being configured so as to have the hardness considerably higher than that of the die body 21.
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Inventors:
IKEDA HIDEKATSU
KOYAMA JUNICHI
KOYAMA JUNICHI
Application Number:
JP2004147947A
Publication Date:
December 02, 2005
Filing Date:
May 18, 2004
Export Citation:
Assignee:
AMADA CO LTD
International Classes:
B21D37/02; B21D5/01; (IPC1-7): B21D5/01; B21D37/02
Attorney, Agent or Firm:
Hidekazu Miyoshi
Iwa Saki Kokuni
Akira Kurihara
Kawamata Sumio
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu
Iwa Saki Kokuni
Akira Kurihara
Kawamata Sumio
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu