Polycrystal diamond fluted tool and a process for the production of the same
US5020394A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1989 |
| Grant date | Jun 4, 1991 |
| Priority date | — |
| Expiry date | Oct 12, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/78
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A polycrystal diamond fluted tool is provided which is capable of effecting working with much higher accuracy and longer life as compared with the sintered diamond straight fluted tool of the prior art, and is particularly suitable for finishing working with high accuracy. The tool is produced by forming, by a vapor phase synthesis method, a polycrystal diamond film on the surface of a substrate which has been subjected to helical grinding, then subjecting the product to a chemical treatment to dissolve and remove only the substrate, brazing the resulting polycrystal diamond film in a fluted form to at least a part of the rake face of a tool base metal which has been subjected to helical grinding in a similar manner to the substrate, and then subjecting the brazed tool base metal to working of a flank face to form a cutting edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.