Diamond insert grinding process
US4993505A · kind A · utility
26Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1989 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Dec 18, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T407/26
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
This invention comprises a diamond insert grinding process to remove stress riser cracks formed in a critical area of a tungsten carbide insert body. The cracks are caused by leaching of cobalt from the carbide during the process of brazing a tungsten carbide backed polycrystalline diamond disc to the body. A grinding wheel selectively removes material from the intersection of the braze below the depth of the cracks in the tungsten carbide body thereby relieving the stress riser in the critical area of the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.