Insert drill

Details Insert drill Insert drill

1992-09-14

1994-04-12

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having stepped cutting edges

408227, 408713, B23B 5102

Patent

active

053020596

ABSTRACT:
This patent discloses a method of manufacturing an insert drill having three or more flutes and a three flute insert drill that may be manufactured by the disclosed method. The method allows accurate machining of insert pockets without requiring removal of a large volume of material from an adjacent flute. The drill disclosed by this patent has three or more cutting inserts which cut chips that are smaller than drills of similar size that have a smaller number of cutting tip inserts. Smaller chips allow easier evacuation of chips and enhance cooling of the drill and workpiece.

REFERENCES:
patent: 2675742 (1954-04-01), Petre
patent: 3621613 (1971-11-01), Grob et al.
patent: 3626645 (1971-12-01), Rochet
patent: 3963365 (1976-06-01), Shallenberger, Jr.
patent: 4210406 (1980-07-01), Berry, Jr.
patent: 4230429 (1980-10-01), Eckle
patent: 4558975 (1985-12-01), Hale
patent: 4648760 (1987-03-01), Karlsson et al.
Metcut Indexable Drill, by Metal Cutting Tools, Inc.
Drill-Max Indexable Drills, by Ingersoll Cutting Tools.
Kub-It-Heavy Duty Sprial-Fluted Indexable Drills by Komet.

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