Roller hemming apparatus and method
US7290423B2 · kind B2 · utility
20Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2005 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Dec 30, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D39/023
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Various embodiments of roller hemming apparatus and methods are disclosed including one wherein multiple rollers are carried on a single mount to hem a flange in a single pass, another including induction heating and air quenching means movable with a roller to anneal the flange just prior to hem forming, and another in which friction from a rotatably driven roller heats the flange to reduce bending stresses during hemming of the flange.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.