Method for manufacturing press-formed product and press-forming apparatus
US10265752B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2014 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Jan 22, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D22/24
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In forming a press-formed product that is made of a high-tensile steel sheet having a tensile strength of 390 MPa or more, and has a substantially gutter-shaped cross section and an outward continuous flange, wrinkling in ridges and cracking in the outward continuous flange are reduced. A method for manufacturing a press-formed product that is made of a high-tensile steel sheet of 390 MPa or more, and has a substantially gutter-shaped cross section and an outward continuous flange in at least one end in a predetermined direction includes a first step in which, after a first pad restrains at least a part of a portion to be formed into a gutter bottom in a forming material, a second pad restrains at least a part of the end of portions to be formed into ridges and subsequently carries out press forming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.