Rotary material removing tool

Details Rotary material removing tool Rotary material removing tool

1982-07-15

1985-04-16

Briggs, William R.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having peripherally spaced cutting edges

408231, 408233, 408713, B23B 5100

Patent

active

045112940

ABSTRACT:
A material removing tool includes an elongated shank having a rear end portion arranged to be driven by the motor of a boring or milling machine and a front end portion provided with a coaxial stub which is received in a socket between two legs of an adapter which carries the cutting implement. At least one of the legs has a radial hole which is in near register with a tapped bore of the stub. The shank portion of a screw, whose head bears against a conical surface surrounding a portion of the hole in the one leg, meshes with the threads in the tapped bore of the stub to urge the rear edge faces of the legs against complementary surfaces provided on two shoulders forming part of the front end portion of the shank. This enhances the resistance to bending stresses and prevents wobbling or vibration of the adapter relative to the shank. The external surfaces of the adapter and shank are formed with longitudinally extending grooves for evacuation of shavings or chips from the locus of removal of material from a workpiece. The diameter of the hole exceeds the diameter of the tapped bore, and the axis of the tapped bore is nearer to the shoulders of the shank than the axis of the hole. The head of the screw has a conical peripheral surface whose inclination is the same as that of the conical surface bounding the above-mentioned portion of the hole in the one leg. A second screw can be provided to secure the other leg of the adapter to the stub. The socket of the adapter and the stub can be stepped to further enhance the resistance to bending stresses.

REFERENCES:
patent: 1062486 (1913-05-01), Lord
patent: 2369875 (1945-02-01), Wanelik
patent: 2867140 (1959-01-01), Getts
patent: 2990189 (1961-06-01), Beers
patent: 3064503 (1962-11-01), Fry
patent: 3138846 (1964-06-01), Conti et al.
patent: 3364800 (1968-01-01), Benjamin et al.
patent: 3667768 (1972-06-01), Stokey
patent: 3747179 (1973-07-01), Lovedahl
patent: 4116579 (1978-09-01), Hamilton

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