All cutting edge drill

Details All cutting edge drill All cutting edge drill

1977-04-08

1978-09-26

Hinson, Harrison L.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having peripherally spaced cutting edges

407 54, B23B 5100, B26D 112

Patent

active

041165802

ABSTRACT:
An all cutting edge drill in which the cutting edges include the cutting edges across the point, at the shoulders between the point cutting edges and the side flute edges, and along the flute edges, all of which avoids local wear areas and gains higher surface speed and a better finish and hole size control. The drill having the all cutting edge configuration will penetrate material faster than conventional drills, can drill material too hard for conventional drills, and can be used with materials that are usually abrasive on conventional drills.

REFERENCES:
patent: 546041 (1895-09-01), Tybers
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patent: 2936658 (1960-05-01), Riley
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patent: 3387511 (1968-06-01), Ackart, Sr. et al.
patent: 3409965 (1968-11-01), Fisher
patent: 3548476 (1970-12-01), Cave et al.
patent: 3564947 (1971-02-01), Maier
patent: 3592555 (1971-07-01), Mackey, Sr.
patent: 3779664 (1973-12-01), Caley et al.

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