Patent · US Expired

Drill having internal chip channel and internal flush channel

US6948890B2 · kind B2 · utility

37Cited by

10References

18Claims

0Family size

Assignee

Seco Tools AB · SE

Inventors

Mattias Svensson · Säve, SE
Mikael Gronquist · Söderhamn, SE
Johnny Bruhn · Norberg, SE

Key dates

Filing date	May 10, 2004
Grant date	Sep 27, 2005
Priority date	—
Expiry date	May 10, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T408/455
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A drill for chip removing machining includes a front cutting end, a rear securing portion, and a shank extending therebetween. The cutting end includes at least one cutting edge. The drill has at least one internal chip channel and at least one internal flush channel formed in a longitudinal pillar portion of the drill. All portions of the drill are formed of the same material, such as cemented carbide, wherein the chip channel has a surface roughness no greater than 0.5 μm.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.