Cartridge case flash hole finishing tool

Details Cartridge case flash hole finishing tool Cartridge case flash hole finishing tool

1990-05-03

1991-11-19

Howell, Daniel W.

Cutting by use of rotating axially moving tool

With work-engaging structure other than tool or tool-support

Frictionally engaging sides of opening in work

86 37, 408202, B23B 4100

Patent

active

050661744

ABSTRACT:
A tool for finishing the aperture in the base of a cartridge case. The typical cartridge case has a cylindrical neck and the aperture is located on the axis that extends from the cylindrical neck. A pilot is provided on the shank of an aperture cutting tool coaxial with a cutter on the tool. A limit stop is provided above the pilot and the combination is adjustable and lockable at a desired position on the shank. The combination pilot and limit stop is positioned relative to the cutter so that as the pilot enters the neck, the cutter is guided into the aperture. The stop limit provides the exact amount of cutter entry for removing burrs but without enlarging the aperture.

REFERENCES:
patent: 1386888 (1921-08-01), Masters
patent: 2601809 (1952-07-01), DiNardo
patent: 2677309 (1954-05-01), Koons
patent: 2787196 (1957-04-01), Stadler
patent: 4807511 (1989-02-01), Markle

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