Roller burnishing tool for effecting diminishing stress reversal on annular workpieces
US5095727A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1990 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | Jan 19, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D19/005
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A roller burnishing tool is disclosed having inner and outer pluralities of concentrically disposed, precision tapered rolls. A precision tapered annular mandrel is disposed within the inner plurality of rolls and operates to controllably urge the inner plurality of rolls outwardly against a lip of a workpiece inserted between the inner and outer pluralities of rolls. The inner plurality of rolls forces the lip outwardly into contact with the outer rolls, and the pressurized contact of the rolls effects a burnishing action on the surfaces of the lip of the workpiece. In a preferred embodiment, the burnishing tool also includes a pilot stop for receiving an alignment post used to align the workpiece with the burnishing tool. When the burnishing tool engages the alignment post, the pilot assembly and mandrel are forced inwardly, whereby the tapered mandrel causes the inner rolls to be forced outwardly against an inner surface of the workpiece, thereby forcing the portion of the workpiece being machined outwardly against the outer rolls. The pressurized contact of the rolls effects a burnishing action which helps provide a micro surface finish to the surfaces of the workpiece. In a pr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.