Cutting by use of rotating axially moving tool – Tool-support – With tool-retaining means
Patent
1989-12-04
1990-09-25
Howell, Daniel W.
Cutting by use of rotating axially moving tool
Tool-support
With tool-retaining means
279 1A, 279 41R, 279 83, B23B 3104
Patent
active
049589660
ABSTRACT:
A tubular bushing receives the shank of an elongated tool, such as a boring bar, drill and the like shank tools, for mounting the tool shank within the elongated tool socket bore of a tool holder or turret of a machine tool. A narrow slot formed in the tube wall extends substantially the full length of the bushing parallel to the tube axis. A considerably narrower slit formed in the tube wall extends from each of the opposite ends of the tube to the adjacent ends of the slots. A narrow, flat band extends along the interior of the tube wall, parallel to the tube axis and radially offset relative to the slot. Thus, set screws mounted in the tool socket defining wall and extending transversely of the socket engage either the flat band, to resiliently compress the bushing around the tool shank, or extend through the slot to directly engage the shank, for securing the tool and bushing within the socket. One of the internal and external diameters of the tube may be dimensioned in accordance with the metric system and the other may be dimensioned in accordance with the inch measuring system.
REFERENCES:
patent: 1645948 (1927-10-01), Galloway et al.
patent: 1765362 (1930-06-01), Berry
patent: 2432860 (1947-12-01), Clatfelter
patent: 2676809 (1954-04-01), Smith
patent: 3507508 (1970-04-01), Andrews
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