Lip skin sector and a method and apparatus for forming a lip skin sector
US10875079B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2018 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Jan 15, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D25/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of forming a sector of an annular component such as an inlet cowl/lip skin of a nacelle for an aircraft engine. The method comprising the steps of clamping at least part of a blank along a clamping boundary in a retaining arrangement so as to leave a portion of the blank exposed within the clamping boundary. Moving a punch and/or retaining arrangement radially so that the punch comes in to contact with the exposed portion of the blank and through the main body of the exposed blank thereby drawing the blank onto an external surface of the punch forming the sector from the leading edge to the trailing edge. Activating cooperating forming arrangement for engaging the blank and drawing the blank over the punch forming the sector of the inlet cowl from the leading edge to the inlet edge, the method comprising using a second draw forming tooling arrangement for the cooperating forming arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.