Title:
PRESS MOLDING METHOD AND PRESS MOLDING DEVICE
Document Type and Number:
Japanese Patent JP2012115867
Kind Code:
A
Abstract:
To shorten a cycle time and to reduce a cost of equipment by performing the drawing and processing of a flange in one step.
After forming an intermediate formed article W' by drawing, the material of a flange W3 of the intermediate formed article W' is made to flow in a vertical wall W2 by further lowering a die 20 and a blank holder 50. At this time, a measure for accelerating the inflow of the material from the flange W3 to the vertical wall W2 is taken. The inflow of the material from the flange W3 to the vertical wall W2 is accelerated, for example, by moving the blank holder 50 to the inside in the width direction while lowering the blank holder.
Inventors:
MASUDA HIROSHI
Application Number:
JP2010267230A
Publication Date:
June 21, 2012
Filing Date:
November 30, 2010
Export Citation:
Assignee:
DAIHATSU MOTOR CO LTD
International Classes:
B21D24/04; B21D22/26
Domestic Patent References:
| JPH09271855A | 1997-10-21 | |||
| JPS60290327A | ||||
| JP2008200688A | 2008-09-04 | |||
| JPS60190327A | 1985-09-27 |
Attorney, Agent or Firm:
Kunihiko Shiromura
Tsuyoshi Kumano
Yusuke Noguchi
Tsuyoshi Kumano
Yusuke Noguchi
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