Drilling tool for cutting cast materials

Details Drilling tool for cutting cast materials Drilling tool for cutting cast materials

2007-11-20

2007-11-20

Howell, Daniel W. (Department: 3722)

Cutting by use of rotating axially moving tool

Tool or tool with support

Having peripherally spaced cutting edges

C408S230000

Reexamination Certificate

active

11268320

ABSTRACT:
A drill for hard materials, comprising webs that are subdivided by means of cutting grooves, and at least one principal cutting edge, each of which is provided with a cutting corner and a transition to a chisel edge. At least some sections of the principal cutting edge are continuously convex in an axial direction starting from the cutting edge.

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Internet translation of JP2002-036018.
Internet translation of JP 2000-263306.

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