Drill blanks
US4724728A · kind A · utility
Inventor
Key dates
| Filing date | Nov 4, 1986 |
| Grant date | Feb 16, 1988 |
| Priority date | — |
| Expiry date | Nov 4, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S76/12
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method is provided of making a drill blank comprising a cylindrical carbide body 24 having a vein 26 of an abrasive compact embedded in one end thereof and bonded to the carbide. A method involves the steps of providing a solid, cylindrical body 10 of cemented carbide, forming a series of grooves 12 in one end surface 14 thereof, placing compact forming material in the grooves, exposing the cylindrical body to temperature and pressure conditions suitable to produce an abrasive compact of the material in the grooves, and severing the cylindrical body from one end surface 14 to the opposite end surface 20 to produce a plurality of the drill blanks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.