Method for producing rolled structural shapes
US5640869A · kind A · utility
9Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1995 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Dec 4, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T225/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for producing a roll forming allows the hemming step and the roll-forming step to be contiguously performed in a single production line. The first ripping step (E) tears off a side edge strip along the first groove formed by the first grooving step (B) to form a first edge portion having a gradually changed sectional shape. At least the first grooving step (B) and the first ripping step (E) are performed contiguously with the roll-forming step (A) by utilizing the sheet or product conveyance force provided in the roll-forming step (A).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.