Press forming method
US9724745B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2009 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Feb 22, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D22/24
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A press forming process forms a blank, which is the material to be pressed, into a product having a predetermined shape including a continuous hat-shaped section in the longitudinal direction and a curved portion protruding toward the top surface side in the longitudinal direction. In the press forming process, an intermediate product which has an excess thickness portion formed at a part of the curved portion of the product and protruding higher than the top surface of the product is formed while constraining the portion of the intermediate product other than the excess thickness portion until the excess thickness portion projects in a direction opposite to the protrusion direction thereof, whereby the intermediate product is formed into a predetermined shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.