Boring bar sleeve

Details Boring bar sleeve Boring bar sleeve

1990-08-13

1992-01-14

Briggs, William

Cutting by use of rotating axially moving tool

Tool-support

With tool-retaining means

82161, 279 1A, B23B 3104

Patent

active

050805363

ABSTRACT:
A boring bar sleeve for mounting a boring bar upon a socketed tool holder of a machine tool is formed of an elongated tube having an outside diameter corresponding to the diameter of the tool holder socket for securing the sleeve within the socket. The tube has a forward end portion, which extends forwardly out of the socket, and within which different elongated tubular bushings may be inserted. The bushings all have the same outside diameter which corresponds to the sleeve inner diameter for interchanging one bushing with another within the sleeve. But, each bushing has a different inner diameter which is of a preselected size that corresponds to a preselected diameter boring bar. The bushings each have a longitudinally elongated slot formed through their walls. A series of longitudinally aligned, spaced apart set screws extend through threaded openings formed in the forward end portion of the tube and through the bushing slot to engage a boring bar inserted within the bushing.

REFERENCES:
patent: 2362053 (1944-11-01), Danielson
patent: 2559742 (1951-07-01), Waters
patent: 3555943 (1971-01-01), Papp
patent: 3731562 (1973-05-01), Heuser
patent: 3754767 (1973-08-01), Bennett
patent: 4277993 (1981-07-01), Engels
patent: 4896892 (1990-01-01), Andrews
patent: 4958966 (1990-09-01), Andrews

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