Drill bit or end mill with grooved flutes

Details Drill bit or end mill with grooved flutes Drill bit or end mill with grooved flutes

1991-01-28

1992-11-03

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having stepped cutting edges

407 54, 408230, B23B 5102

Patent

active

051602326

ABSTRACT:
A cutting tool in the form of a drill bit or end-milling tool has an elongated body formed with at least one cutting edge defined by a flank of a flute running primarily along a rotation axis of the body and having leading and trailing flanks one of which is formed with wavelike and spaced projections and recesses. The depth of these grooves and, hence, the height of the projections increases toward the end cutting edge to break up chips.

REFERENCES:
patent: 599537 (1898-02-01), Steudner
patent: 750537 (1904-01-01), Hanson
patent: 867639 (1907-10-01), Bragg
patent: 1069930 (1913-08-01), Down
patent: 1384733 (1921-07-01), Woods
patent: 2646701 (1953-07-01), Letien
patent: 2769355 (1956-11-01), Crisp

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