Two-roll rounding machine and method for rounding sheet-metal blanks
US6631631B2 · kind B2 · utility
2Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2001 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Oct 22, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D5/146
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
On a two-roll rounding machine, in addition to a compressively elastic guide roll and a compressively rigid rounding roll, one or more compressively elastic rolls are provided which have both a rounding function and a supporting function for the rounding roll. These additional rolls may also be supported by a back-up roll. The result is a rounding machine that has very good rounding characteristics even at small rounding diameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.