Spinning method for forming a diameter reduced portion
US8635898B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2010 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Mar 11, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D41/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Provided is a spinning method of reducing a diameter of a work piece pipe body with processing rollers disposed on an outer surface of the work piece pipe body, the processing rollers being configured to be relatively revolved around the work piece pipe body, wherein, when the processing rollers are axially reciprocated while being moved in a radius direction of the work piece pipe body, wherein the diameter reducing process with the processing rollers is performed under a state in which a wound body formed of an elastic sheet-like material is inserted as a core body into the inside of a portion of the work piece pipe body to be subjected to the diameter reducing processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.