Method of hydroforming an extruded aluminum tube with a flat nose corner radius
US9545657B2 · kind B2 · utility
1Cited by
20References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2014 |
| Grant date | Jan 17, 2017 |
| Priority date | — |
| Expiry date | Oct 15, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49623
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of hydroforming a vehicle rail from an extruded aluminum tube includes the steps of positioning the extruded aluminum tube into a hydroforming die and partially closing the hydroforming die. Next is the step of applying a liquid under a first level of pressure to the extruded aluminum tube in the hydroforming die. This is followed by engaging an inner radius of a bend in the extruded aluminum tube with the hydroforming die before completely closing the hydroforming die and increasing the level of liquid pressure in the workpiece to a second level to form and hydro-pierce a part from the extruded aluminum tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.