Drill insert geometry having V-notched web

Details Drill insert geometry having V-notched web Drill insert geometry having V-notched web

2008-05-13

2008-05-13

Howell, Daniel W. (Department: 3722)

Cutting by use of rotating axially moving tool

Tool or tool with support

Having peripherally spaced cutting edges

C408S233000, C408S713000

Reexamination Certificate

active

11307702

ABSTRACT:
The present invention relates to a V-notched web formed on a drill insert of a drill tool assembly. The V-notched web allows greater stability and feed rates, while decreasing the heat generated at the insert tip. The present invention is provided by a drill insert comprising a drill insert body having at least two cutting edges, a web between the two cutting edges, and a web thinning notch formed on either side of the web. Each web thinning notch forms a notch cutting edge having a positive rake angle.

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