| 摘要 |
In a machine tool including a supporting device and a tool rest, a workpiece is supported rotatably around a first axis by the supporting device, and a rotary tool or a boring tool for boring operations to machine an internal surface of the workpiece is coupled, rotatably around a second axis, to a rotary shaft of the tool rest. 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 predetermined oblique angle with respect to the first axis.
|
