Electrode for polishing hollow tube, and electrolytic polishing method using same
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United States of America Patent
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Jun 27, 2017
Grant Date -
Jun 11, 2015
app pub date -
Jul 8, 2013
filing date -
Jul 11, 2012
priority date (Note) -
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Abstract
A wing electrode is configured by disposing at least a wing in a circumferential direction at equal intervals, the wing having a specific width in an axial direction of the electrode shaft and a tip in a shape corresponding to an inner surface of the hollow tube. A housing tube is arranged concentrically to the electrode shaft and to house the wing electrode by winding the respective wings around the electrode shaft. A slit of the housing tube is arranged in the axial direction so as to correspond to each wing. A diameter adjustment unit is operable to expand and contract each wing in the radial direction by rotating the electrode shaft and the housing tube relatively after inserting each wing into the slit of the housing tube. As a matter of course, the electrolyte is filled in the hollow tube at any time before the electrolytic treatment.
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