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Title:
PRESS FORMED BODY AND METHOD OF MANUFACTURING THE PRESS FORMED BODY
Document Type and Number:
Japanese Patent JP2013107111
Kind Code:
A
Abstract:

To suitably adopt a method of manufacturing a press formed body when manufacturing small parts which require high accuracy to an outside shape and outside dimensions, for example, a rotary body in which movement to the axial center is not allowed, especially, a gear or the like having the small outside diameter thereof in the press formed body (half-finished product or in-process product) which is manufactured with a transfer press.

By punching a blank 10 from a band-plate-shaped strip 2, by making the blank 10 after punching push back to a punched hole 11 which is formed on the strip 2 so that only a part of thickness is engaged with the inner peripheral surface of the punched hole 11, a projecting part 3 which projects the blank 10 is formed on one surface of the strip 2, and a recessed part 4 which closes the punched hole 11 with the blank 10 is formed on the opposite surface of the strip 2.


Inventors:
SUGIMOTO FUMIO
Application Number:
JP2011254808A
Publication Date:
June 06, 2013
Filing Date:
November 22, 2011
Export Citation:
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Assignee:
SUGIMOTO FUMIO
International Classes:
B21D28/02; B21D28/00; B21D28/16
Domestic Patent References:
JPH05161926A1993-06-29
JP2003126924A2003-05-08
JPH05161926A1993-06-29
Attorney, Agent or Firm:
Toshio Yasuda
Mikio Yasuda