Cutting by use of rotating axially moving tool – Tool-support with means to permit positioning of the tool... – Pivotable tool
Patent
1975-05-23
1977-05-10
Simpson, Othell M.
Cutting by use of rotating axially moving tool
Tool-support with means to permit positioning of the tool...
Pivotable tool
279 6, 408150, B23B 29034, B23B 2918
Patent
active
040225399
ABSTRACT:
Boring bar structure including an adapter having an axis of rotation, an eccentric bore through said adapter having a longitudinal axis parallel to but offset from the axis of rotation of the adapter, adapter spline structure in one end of the bore concentric with the bore, a cylindrical boring bar body having concentric spline structure on one end thereof adapted to mesh with the adapter spline structure in adjusted relative angular positions, the one end of the boring bar body being adapted to fit within the eccentric bore in the adapter with the spline structures in mesh, whereby a cutting tool secured to the other end of the boring bar body may be adjusted radially of the axis of rotation of the adapter on axial movement of the boring bar body within the eccentric bore in the adapter and relative angular movement of the adapter and boring bar body and subsequent meshing of the spline structure with the adapter and bar in a different angular relation.
The boring bar body has an angular, axially central external groove therearound which has a V-shaped cross section which is within the adapter with the one end of the boring bar body in the adapter bore. A set screw is provided extending through the adapter into the bore to engage one face of the angular groove and thus set the relative axial position of the boring bar body and adapter with the splined structures engaged. A limiting screw extends perpendicularly through the adapter into the bore and into the groove in the boring bar body whereby relative axial movement between the boring bar body and the adapter is limited to that necessary to engage and disengage the spline structures for relative angular adjustment of the boring bar body and adapter to radially adjust a cutting tool secured to the other end of the boring bar body.
REFERENCES:
patent: 1880742 (1932-10-01), Bosworth
patent: 2392809 (1946-01-01), Cote
patent: 2461579 (1949-02-01), Thomas
Bilinsky Z. R.
J. P. Tool, Inc.
Simpson Othell M.
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