Tapered hole cutter

Details Tapered hole cutter Tapered hole cutter

1977-03-24

1979-01-16

Smith, Al Lawrence

Cutting by use of rotating axially moving tool

With means to apply transient, fluent medium to work or product

Including tool with duct

408 59, 408211, B23B 5100, B23B 5106

Patent

active

041347048

ABSTRACT:
A blade type rotary cutter for cutting tapered holes in metal workpieces. The cutter blade is elongated and generally flat, being tapered in the "width" direction for applying the taper to the hole, and being tapered in the "thickness" direction so that the cutting edge along the length of the blade will lead the cutting edges proximate the point and thereby minimize point drift. All cutting edges of the blade are provided with a substantial negative rake for chip control, and the chips are blown out of the hole by jet streams of cutting fluid directed along the longitudinal cutting edges of the blade.

REFERENCES:
patent: 571253 (1896-11-01), Wesselmann et al.
patent: 2587980 (1952-03-01), Doepker
patent: 2655964 (1953-10-01), Labbee
patent: 2732869 (1956-01-01), Stearns
patent: 3116654 (1964-01-01), Nider
patent: 3238836 (1966-03-01), Johnson
patent: 3591302 (1971-07-01), Andreasson
patent: 3758222 (1973-09-01), Oakes

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