Press forming apparatus and press forming method
US10682681B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2014 |
| Grant date | Jun 16, 2020 |
| Priority date | — |
| Expiry date | Jun 16, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D24/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A press forming apparatus includes: a punch; a blank holder disposed adjacent to the punch; a die being a counterpart of the punch; and a pad disposed to face the punch. The punch has a tip surface, an outside surface, and a stepped surface having shapes corresponding to a web portion, vertical wall portions, and a flange portion of a product, respectively. When the punch and the die are relatively moved in a pressing direction in a state where a middle portion in a width direction of a workpiece is sandwiched by the pad and punch and an outer peripheral portion in the width direction of the workpiece is bound by the blank holder and the die, the workpiece's outer peripheral portion in the width direction gets out from between the blank holder and the die, and the flange portion is shaped by the die and the punch's stepped surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.