Chip breaker for polycrystalline CBN and diamond compacts
US5026960A · kind A · utility
26Cited by
13References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1989 |
| Grant date | Jun 25, 1991 |
| Priority date | — |
| Expiry date | Oct 31, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T407/24
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An oversize compact blank having a surface and edges that establish it as oversized is provided. A chip breaker pattern is formed on the compact blank surface. Preferred means for forming the chip breaker pattern include use of a laser, a plunge EDM apparatus, or by ultrasonic abrading. Thereafter, the edges of the patterned oversized compact blank are finished to reduce the size of the blank. When pluge EDM apparatus fitted with a patterned plunger is used, the compact blank must be electrically conductive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.