BORING TOOL AND BORING METHOD USING SAME
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United States of America Patent
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Issued Date -
Dec 22, 2016
app pub date -
Apr 28, 2014
filing date -
Jul 5, 2013
priority date (Note) -
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Abstract
A boring tool for performing boring on a workpiece having through holes placed coaxially includes a shaft member, first and second cutting blades, and first and second guides. The shaft member is rotationally driven by a machine tool. The first blade cuts an inner peripheral surface of a first through hole. The first guide slides on the inner peripheral surface of the first hole. The second blade cuts the inner peripheral surface of the first hole. The second guide slides on the inner peripheral surface of the first hole. The first guide slides on an inner peripheral surface of one of the through holes cut by the first blade, when the first hole is cut by the second blade. The second guide slides on an inner peripheral surface of one of the through holes cut by the second blade, when the first hole is cut by the second blade.
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