Method for making a hollow fan blade with machined internal cavities
US7334333B2 · kind B2 · utility
14Cited by
13References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2004 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Jan 26, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/303752
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Hollow fan blades for turbo fan gas turbine engines are formed of two separate detail halves. Each detail half has a plurality of cavities and ribs machined out to reduce weight. The floor and opposite interior walls of each cavity are machined simultaneously. The configuration minimizes the number of cutter plunge cuts for the internal cavities, and maximizes cutter size, in order to minimize the time required to machine them. These detail halves are subsequently bonded and given an airfoil shape in the forming operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.