Method for manufacturing fluid bearing
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United States of America Patent
Stats
-
Apr 8, 2003
Grant Date -
Sep 12, 2002
app pub date -
Dec 8, 2000
filing date -
Dec 15, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for manufacturing a fluid bearing is provided. A mask member having at least two sets of grooves provided at least two places along an axial direction is affixed to an outer surface of an electrode section of a fluid bearing manufacturing tool. Each of the groove sets consists of multiple grooves in a shape corresponding to designed fluid bearing grooves on a work piece, such as, for example, a sleeve section of the fluid bearing. The fluid bearing manufacturing tool is inserted into a hole created in the work piece, wherein a power source for electrolytic machining is connected between the fluid bearing manufacturing tool and the work piece. An electrolytic solution between the manufacturing tool and the work piece is allowed to flow to form fluid bearing grooves on an inner surface of the work piece through electrolytic machining.
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