Drill bit for non-linear drilling
US6431801B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2000 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Dec 8, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/909
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A drill bit for boring non-linear holes in a workpiece, the drill bit having a generally elongate post, for mounting the drill bit to a tool; a generally elongate shank; and a head. The head has a front portion, a rear portion and there between a main body portion. A plurality of flutes are arranged in a generally helical shape along the main body portion, arched with respect to a longitudinal direction of the drill bit, each flute having an outer cutting edge arranged on an outside edge of the flute, to provide cutting capability in a direction substantially sideways compared to the longitudinal direction of the drill bit. A central point, arranged on the front portion of the head, is connected to at least one flute via a tapered first cutting portion, the first cutting portion being provided with a first cutting edge, to provide cutting capability in a direction substantially forwards. A forward facing roughing part is arranged on at least one flute and on the front portion of the head, the roughing part having a roughing edge, to provide further cutting capability in a direction substantially forwards. The rear portion of the head is connected to at least one flute via a tapered…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.