Patent · US Active

Drill with a centering drill insert, and a method of using a drill with a centering drill insert, and the insert therefor

US8475090B2 · kind B2 · utility

6Cited by

4References

13Claims

0Family size

Assignee

KENNAMETAL INC. · US

Inventors

Peter Karl Mergenthaler · Markt Bibart, DE
Berthold Heinrich Zeug · Ergolding, DE
Horst Jaeger · Koblenzer Straße, DE

Key dates

Filing date	Sep 8, 2008
Grant date	Jul 2, 2013
Priority date	—
Expiry date	Apr 10, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T408/9098
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

An insert includes a body portion and at least one cutting edge disposed on the periphery thereof. The cutting edge includes an inner lip and an outer lip disposed at an angle with respect to one another. A line extending along the inner lip intersects with a line extending along the outer lip at the vertex of the angle. The angular cutting edge further includes a protuberance disposed between, and connecting the inner and outer lips and projecting outwardly away from the body portion beyond the vertex of the angle defined by the intersection of the lines extending from the inner and outer lips. The protuberance having an inner lip connected to the inner lip of the cutting edge and an outer lip connected to the outer lip of the cutting edge to form smooth curvilinear transitions between the lips of the protuberance and the lips of the cutting edge.

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