Apparatus for performing hydroforming operation
US6536251B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Mar 30, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D37/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hydroforming apparatus includes an upper platen carrying an upper die section and a lower platen carrying a lower die section. The platens are connected together by tie rods extending through respective compression tubes. The upper and lower die sections have recessed areas formed therein that define a die cavity. When the lower die section is moved to a lowered position, a workpiece can be disposed in the recessed area formed therein. Then, the lower die section and the workpiece are elevated by cylinders such that the workpiece is enclosed within the die cavity and mechanically deformed by the cooperated upper and lower die sections. A support block is then moved between the hydroforming die and the lower platen. A cylinder array containing a plurality of pistons is next hydraulically actuated so as to securely clamp the hydroforming die between the cylinder array and the lower platen. While the cylinder array is actuated, pressurized fluid is supplied within the workpiece, deforming it into conformance with the die cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.