Method of manufacturing T-shaped stringer with a rounded web end
US9676147B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Dec 18, 2014 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Mar 13, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2419
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing T-shaped stringers made of composite material, including a second shaping step for shaping laminates into L-shaped preforms, which includes providing a set of tools formed by a fixed tool comprising a lower portion and an upper portion, and a moveable tool comprising a lower element and an upper element. It also includes the segment of the laminate intended for the foot of the preform being located between the lower portion and the upper portion of the fixed tool, and the segment of the laminate intended for the web of the preform being located between the lower element and the upper element of the moveable tool. It further includes vertically moving the moveable tool to progressively bend the web of the preform supporting it on a vertical wall of the fixed tool. The end of its web adopts a rounded shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.