Portable machine tool
AssigneeClimax Portable Machine Tools, Inc.
InventorDavid S. Strait
Life of this patent
Estimating the term…
Abstract
A machine tool comprises a chuck mountable in a bore of a workpiece, a drive assembly attached to the chuck, and a tool head releasably attached to the drive assembly. The tool head has a tool head body, and a drive shaft extends through the tool head body and is coupled to an input shaft of the drive body. The input shaft of the drive assembly is connected through a reduction gear and an output shaft to the tool head body for supplying power thereto.
Claims18
A machine tool for operating on a workpiece having a surface that defines a cylindrical bore, said machine tool comprising:
- a drive assembly comprising
- a chuck body that defines a central axis,
- at least three jaws each having an engagement face and projecting from the chuck body, at least a first jaw and a second jaw having their engagement faces at a radial extent equal to the radius of the bore, and at least a third jaw being radially displaceable relative to the chuck body, and
- an attachment formation, and
- a set-up fixture including
- a centering jaw having an axis and an engagement face, and
- an attachment formation that is engageable with the attachment formation of the drive assembly for attaching the set-up fixture to the drive assembly in an orientation such that the first and second jaws extend to opposite respective sides of a first plane, which contains the central axis of the drive assembly and the axis of the centering jaw, and the centering jaw and the first and second jaws extend to the same side of a second plane, which contains the central axis of the drive assembly and is perpendicular to the first plane, whereby when the drive assembly and the set-up fixture are installed in the bore with the engagement faces of the first and second jaws and the engagement face of the centering jaw contacting the surface of the bore, the axis of the drive assembly coincides with the axis of the bore.
A machine tool comprising:
- a chuck mountable in a bore of a workpiece,
- a drive assembly attached to the chuck and including an output member that is adapted to rotate relative to the chuck in a first sense, and
- a tool head,
- and wherein the output member of the drive assembly and the tool head are formed with respective portions of a spiral dovetail coupling, whereby the tool head can be mounted to the drive assembly by engaging the spiral dovetail coupling and rotating the tool head relative to the drive assembly in a second sense, opposite said first sense, and the tool head can be de-mounted from the drive assembly by rotating the tool head in said first sense.
A machine tool comprising a drive assembly incorporating a gear mechanism having an input and an output, a tool head, a tubular outer drive transmission shaft connecting the output of the gear mechanism to the tool head, and an inner drive transmission shaft that is coaxial with the outer drive transmission shaft for coupling drive to the input of the gear mechanism.
A machine tool comprising:
- a chuck that is mountable in a bore of a workpiece,
- a tool head that is rotatable relative to the chuck and comprises a tool head body and a tool holder mounted in the tool head body and movable relative thereto along a feed axis,
- a drive shaft in driving engagement with the tool head for driving the tool head to rotate, and
- a feed shaft in driving engagement with the tool holder for driving the tool holder to move relative to the tool head body along the feed axis,
- and wherein one of said shafts is tubular and the other shaft extends coaxially within said one shaft.
A machine tool comprising:
- a chuck mountable in a bore of a workpiece,
- a drive assembly attached to the chuck and including an input member for receiving power, an output member for supplying power, and a reduction gear effective between the input member and the output member, and
- a tool head that is attachable to the drive assembly, the tool head comprising a tool head body and a drive shaft that extends through the tool head body and is coupled to the input member of the drive assembly, whereby upon rotating the drive shaft, drive is transmitted by way of the input member, the reduction gear, and the output member of the drive assembly to the tool head.
Dependencies are inferred from the claim text.