Roll forming method and device
US5711174A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 16, 1996 |
| Grant date | Jan 27, 1998 |
| Priority date | — |
| Expiry date | Jul 16, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21H7/187
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A roll forming method is used for forming an annular product with a radially outwardly extending flange portion at an end and includes steps of holding a center portion of a work for forming the annular product by a holding device, rotating the work, contacting a circumferential end portion of the rotating work with a forming roller to be pressed to form the flange portion while retaining a circumferential outer end of the work. The present invention is advantageous in that the resultant product has a good quality without deficiency, such as underfill of the material and has an improved toughness unlike a cast product, a product made by welding and the like of the same structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.