Method of sheet forming
US9914163B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2014 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Jan 1, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D53/88
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of sheet forming manufactures a sheet-formed part that is formed in an L-shape as viewed in a plan view and includes a top portion, side wall portions formed on the respective both sides of the top portion, and flange portions contiguously formed with the respective side wall portions, by sheet-forming a metal sheet with the a sheet forming tool. The method includes: a first sheet forming process in which the metal sheet is arranged on a first sheet forming tool including a first punch, a first die, a first blank holder, and a pad; and a second sheet forming process in which the first sheet-formed part formed is sheet-formed into a second sheet-formed part having a top portion and a side wall portion whose shapes are identical with those of the sheet-formed part, with a second sheet forming tool having a second punch and a second die.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.