Title:
PRESSED COMPONENT MANUFACTURING METHOD, MOLD DESIGNING METHOD, MOLD SHAPE DESIGNING DEVICE, AND MOLD
Document Type and Number:
WIPO Patent Application WO/2022/049904
Kind Code:
A1
Abstract:
Provided is a pressed component manufacturing method which can be applied even when a pressed component having a shape that cannot be molded unless the pressed component is significantly narrowed is manufactured. When a metal plate is press-molded into a final component shape through two or more press steps including a press step, if the metal plate is press-molded into the final component shape through a single press step, an inflow amount of a material required for forming the final component shape is calculated on the basis of an increment in the cross-sectional line length of the final component shape with respect to that before molding, the calculated inflow amount of the material is distributed to each step including a final press step, and a preformed shape after the press molding in a step other than the final press step is determined on the basis of the distributed inflow amount. As a cross section, a line is set which, in a plan view, is orthogonal to a direction in which the material flows when the metal plate is drawn, and a plurality of cross sections are set which are cut by planes orthogonal to the line in a plan view and extending in a direction along the plate thickness direction of the metal plate before molding.
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Inventors:
NAKAGAWA KINYA (JP)
SHINMIYA TOYOHISA (JP)
YAMASAKI YUJI (JP)
SHINMIYA TOYOHISA (JP)
YAMASAKI YUJI (JP)
Application Number:
PCT/JP2021/026673
Publication Date:
March 10, 2022
Filing Date:
July 15, 2021
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B21D22/00; B21D22/26
Domestic Patent References:
| WO2018123989A1 | 2018-07-05 |
Foreign References:
| JP5911466B2 | 2016-04-27 | |||
| JP5188803B2 | 2013-04-24 | |||
| JP2021071738A | 2021-05-06 | |||
| JP2020147655A | 2020-09-17 |
Attorney, Agent or Firm:
TANAKA Hidetetsu et al. (JP)
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