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Title:
プレス成形品の成形方法およびプレス成形装置
Document Type and Number:
Japanese Patent JP5041116
Kind Code:
B2
Abstract:

To improve the yield of a material by evading an increase in the margin of excess metal when the depth of drawing is deep or the like in drawing.

A projecting-shaped forming part 3 for absorbing the surplus is beforehand provided on a die 1, a range in which a blank material is not restrained is made in the early stage of the forming, the surplus of the blank material is absorbed with the projecting-shaped forming part 3 by inducing the inflow of the blank material to the projecting-shaped forming part 3 and the formed good is cut in a part where a product shape is obtained. Because the margin of the excess metal is reduced, the yield of the material is improved. Because the requirement to the stretch property of the material is moderated, cost reduction is attained by lowering the grade of the material. A die accomplishing period is shortened.

COPYRIGHT: (C)2007,JPO&INPIT


Inventors:
Tsuyoshi Hamada
Application Number:
JP2005310946A
Publication Date:
October 03, 2012
Filing Date:
October 26, 2005
Export Citation:
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Assignee:
Isuzu Motors Limited
International Classes:
B21D24/00; B21D22/22
Domestic Patent References:
JP9239456A
JP2001225113A
JP9150224A
JP54118442U
JP62013220A
Attorney, Agent or Firm:
Yuki Yokoi



 
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