Electropolish/grinding means for an inner surface of a long tube
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United States of America Patent
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Sep 20, 2005
Grant Date -
Jun 19, 2003
app pub date -
Mar 1, 2002
filing date -
Dec 13, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention is an electropolishing/grinding device for an inner surface of a long tube, including at least one long tube, one electrode, at least two partitions, one fixed magnet mechanism, one driving apparatus and an axial driven mechanism. The fixed magnet mechanism and the driving apparatus form a magnetic levitation effect, which uses magnetic repulsiveness and magnetic attraction to keep the partitions away from the inner surface and avoid an eccentric situation. One of the two partitions has a plurality of springs, a plurality of protruding objects and a plurality of abrasive devices interconnected and firmly touching the inner surface of the tube for grinding.
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