Method of manufacturing an insert drill

Details Method of manufacturing an insert drill Method of manufacturing an insert drill

1991-07-31

1992-09-15

Howell, Daniel W.

Metal working

Method of mechanical manufacture

Shaping one-piece blank by removing material

761086, 409131, B21K 502

Patent

active

051466694

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: 4230429 (1980-10-01), Eckle
patent: 4558975 (1985-12-01), Hale
Metcut Indexable Drill, by Metal Cutting Tools, Inc.
Drill-Max Indexable Drills, by Ingersoll Cutting Tools.
Kub-It-Heavy Duty Spiral-Fluted Indexable Drills, by Komet.

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