Electromagnetic flanging and hemming apparatus and method
US7290318B2 · kind B2 · utility
6Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2004 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Jan 6, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53065
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Apparatus and methods are disclosed for applying electromagnetic force (EMF) to flanging and hemming metal panels to form a hemmed panel assembly. First and second apparatus and method steps use a translating EMF coil to flange a sheet and to finish a hem by progressive non-planar bending. An alternate embodiment uses EMF hemming for difficult-to-hem portions of a flange and optionally precedes this with conventional hemming of straight hem portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.