Spot and chamfer drill insert

Details Spot and chamfer drill insert Spot and chamfer drill insert

2005-02-01

2005-02-01

Wellington, A. L. (Department: 3722)

Cutting by use of rotating axially moving tool

Tool or tool with support

Having peripherally spaced cutting edges

C408S224000, C408S231000, C408S713000

Reexamination Certificate

active

06848869

ABSTRACT:
The present invention relates to a spot and chamfer drill insert which can be utilized to create accurately located spots for subsequent drilling operations while simultaneously providing a chamfer for the finished hole. The present invention utilizes web thin clearance surfaces that are formed at web thin clearance angles, wherein the web thin clearance angles are oriented with respect to a projected plane normal to a plane through the web thin cutting edge and parallel to the longitudinal axis of the insert, wherein the projected plane is tangent to the web thin cutting edge.

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patent: 6685402 (2004-02-01), Mast et al.
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patent: 20040001741 (2004-01-01), Mast et al.
Allied Machine & Engineering Corp., “High Performance and Universal Style—Drills, Holders and Accessories,” Brochure, 3 pages, (Apr. 2000).
Allied Machine & Engineering Corp., “90° T-A Spot and Chamfer Drill Insert,” Brochure, 2 pages, (Nov. 2001).

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