Machine tool and boring method
AssigneeOkuma Corporation
InventorKatsuhisa ISHIOKA
Life of this patent
Estimating the term…
Abstract
In a machine tool (1) including a supporting device (2) and a tool rest (4), a workpiece (W) is supported rotatably around a first axis (C) by the supporting device (2), and a rotary tool or a boring tool (6) for boring operations to machine an internal surface of the workpiece (W) is coupled, rotatably around a second axis (L1), to a rotary shaft of the tool rest (4). The tool rest (4) is allowed to be turned around an axis (B) perpendicular to the first axis (C), and the boring tool (6) includes a tool holder (7) adapted to be coupled to the rotary shaft and a bit (6a) which is angled with respect to an axis (L2) of the tool holder (7), whereby a boring operation is performed with the tool rest (4) positioned at a predetermined oblique angle with respect to the first axis (C).
Claims3
A machine tool comprising:
- a supporting device configured to support a workpiece in a manner that permits the workpiece to be rotated around a first axis;
- and
- a tool rest having a rotary shaft, the tool rest being configured to allow a rotary tool to be coupled to the rotary shaft in a manner that permits the rotary tool to be rotated around a second axis, the rotary shaft being allowed to be coupled to a boring tool for boring operations to machine an internal surface of the workpiece,
- wherein the tool rest is allowed to be turned around an axis perpendicular to the first axis, and the boring tool includes a tool holder adapted to be coupled to the rotary shaft and a bit which is angled with respect to an axis of the tool holder, whereby a boring operation is performed with the tool rest positioned at a specific oblique angle with respect to the first axis.
A method for performing a boring operation on a workpiece, comprising the steps of:
- providing a machine tool which includes a supporting device configured to support a workpiece in a manner that permits the workpiece to be rotated about a first axis, and a tool rest having a rotary shaft, the tool rest being configured to allow a rotary tool to be coupled to the rotary shaft in a manner that permits the rotary tool to be rotated around a second axis, wherein the tool rest is allowed to be turned around an axis perpendicular to the first axis;
- coupling, to the rotary shaft of the tool rest, a boring tool for boring operations to machine an internal surface of the workpiece, the boring tool including a tool holder adapted to be coupled to the rotary shaft and a bit which is angled with respect to an axis of the tool holder;
- turning the tool rest around the axis perpendicular to the first axis and positioning the same at a predetermined oblique angle with respect to the first axis;
- and
- performing the boring operation with the tool rest positioned at the predetermined oblique angle with respect to the first axis, by driving at least the tool rest and the supporting device by which the workpiece is supported.
Dependencies are inferred from the claim text.