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Patent Searching and Data


Title:
STACKED DIE
Document Type and Number:
Japanese Patent JP2002178061
Kind Code:
A
Abstract:

To provide a stacked die for press capable of improving the durability and realizing the stacking with high accuracy, easy in manufacture and simple in structure.

A press die comprises an upper die part 1, a blank holder 2 and a lower die part 3, and a die 5 of the upper die part 1 and a punch 32 of the lower die part 3 are formed by stacking a large number of thin steel plates 7. Inserts 10, 11 and 34, 35 piercing the layer of the thin steel plates 7 are provided at the positions corresponding to the die 5 and the punch 32, and an insert 36 is further provided on the punch 32 to perform the forming of high accuracy by allowing each tip surface to form a pressing part. The inserts 34, 35 and 36 also plays the function of a reference pin. In addition, a die face plate 16 is provided on a highest layer of the die 5 to improve the durability against the ironing.


Inventors:
ISHIKAWA KAZUHIRO
Application Number:
JP2000385639A
Publication Date:
June 25, 2002
Filing Date:
December 19, 2000
Export Citation:
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Assignee:
HONDA MOTOR CO LTD
International Classes:
B21D37/20; (IPC1-7): B21D37/20
Domestic Patent References:
JPH09136121A1997-05-27
JP2002001457A2002-01-08
JP2002205131A2002-07-23
JPS61180622A1986-08-13
JPS6066640U1985-05-11
JPH02229628A1990-09-12
Attorney, Agent or Firm:
Kiyomitsu Komatsu