Drill grinder having drill holder including chucks for gripping shank and body of the drill
US4860497A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 7, 1987 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | Oct 7, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/29
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A drill grinder for grinding a point of a drill including a shank, and a body which has the point. The drill grinder includes a holding device for removably holding the drill, and a grinding wheel adapted to be forced on the drill point, and to thereby grind the point while the drill is held by the holding device. The holding device includes a first chuck for gripping the shank of the drill, and a second chuck for gripping the body of the drill. The grinder has a holder mounting device for removably holding the holder device during a grinding operation on the drill by the grinding wheel. The grinder may further includes a drill setting device for removably accommodating the holding device, to position the drill in a predetermined circumferential position relative to the second chuck, prior to the grind operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.