Method and apparatus for forming a processed portion of a workpiece
US6233993A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 2000 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | May 3, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D41/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for processing a portion of a workpiece. At least one roller is supported on a rotatable member rotatable about a main axis to be radially moved to and from the main axis. The workpiece is supported so that a central axis of the portion to be processed is aligned with one of a plurality of forming target axes. A plurality of forming target axes are provided on the basis of a plurality of target processed portions of the workpiece changed from the unprocessed portion to a final target changed diameter portion of the workpiece with a central axis thereof being at least one of offset from, oblique to and skewed from a central axis of the unprocessed portion. Then, at least one of the work piece and the roller is driven to be rotated relative to each other about each forming target axis, while the roller is moved radially toward each forming target axis of the plurality of forming target axes, with the roller being in substantial contact with a surface of the portion to be processed. As a result, the portion to be processed is formed into the final target changed diameter portion. Furthermore, opposite end portions of the workpiece may be processed sequentially.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.