Single flute drill and method of construction

Details Single flute drill and method of construction Single flute drill and method of construction

1998-02-05

1999-11-02

Bishop, Steven C.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having central lead-screw

761086, 408230, B23B 5102

Patent

active

059758139

ABSTRACT:
A wood drill and method for is manufacture are disclosed. A drill body has a single spiral land and a holding shank. The top of the web has an axial hole receiving a projection from a separate lead screw and the top of the spiral land has a notch for receiving a carbide cutting insert. The replaceable lead screw and carbide cutting insert are fixed to the drill body and the inserts and lands are ground to provide the proper hole sizing tips and cutting surfaces.

REFERENCES:
patent: 413159 (1889-10-01), Bailey
patent: 750537 (1904-01-01), Hanson
patent: 2769355 (1956-11-01), Crisp
patent: 3824026 (1974-07-01), Gaskins
patent: 4625593 (1986-12-01), Schmotzer
patent: 5160232 (1992-11-01), Maier

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