Method for producing ring members involving use of a rotatably driven mandrel
US6978546B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2003 |
| Grant date | Dec 27, 2005 |
| Priority date | — |
| Expiry date | May 2, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49689
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for producing ring members, such as rings for rolling bearings, through use of a rolling operation involves warming a ring blank, positioning the warmed ring blank over a mandrel which is rotatable about a first axis, and positioning a forming roll rotatable about a second axis aligned with the first axis so as to form a rolling gap with the mandrel, with a portion of the ring blank being positioned in the rolling gap. The forming roll is driven to rotate in one rotary direction while the mandrel is driven to rotate in a rotary direction opposed to the rotary direction of the forming roll. During rotation of the forming roll and the mandrel, the mandrel is urged towards the forming roll to reduce the size of the rolling gap and thereby reduce the thickness of the ring blank while also increasing its diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.