Machine tool and boring method
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United States of America Patent
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Jun 25, 2013
Grant Date -
Apr 7, 2011
app pub date -
Sep 22, 2010
filing date -
Oct 2, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
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.
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