Burnishing tool
US4246684A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1979 |
| Grant date | Jan 27, 1981 |
| Priority date | — |
| Expiry date | Aug 1, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/47
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The tool has a shank with a draw bolt threaded in an open recess in one end. A compression ring is mounted on the draw bolt and has an axially tapered outer peripheral surface. A burnishing ring is received about the draw bolt compression ring and axially engages the end of the tool shank. The burnishing ring has an outer diameter which is greater than the maximum outer diameter of the tool shank as well as being greater than the maximum outer diameter of the draw bolt. The burnishing ring has an inner diameter axially tapered surface which mates with the axially tapered outer peripheral surface of the compression ring. When the draw bolt is tightened it holds the compression ring tightly within the burnishing ring, thereby providing a mount for the burnishing ring. The burnishing ring has a precise desired outer diameter for burnishing a bore. The burnishing ring may be made of carbide or similar material and can be quickly removed and replaced as necessary due to wear or the requirement for a different burnishing diameter. Alternatively, the burnishing ring may be made of a material having a sufficiently high modulus so that the burnishing ring expands as the draw bolt is tighten…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.