Mechanical assembly of shaft and static pressure bearing
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United States of America Patent
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Sep 1, 1998
Grant Date -
N/A
app pub date -
Apr 25, 1997
filing date -
Apr 30, 1996
priority date (Note) -
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Abstract
A mechanical assembly of shaft and static pressure bearing including a static pressure bearing mechanism formed in a shaft. The bearing mechanism includes an air supply chamber, a plurality of air conduits, a plurality of porous bodies each secured in a respective one of the plurality of air conduits, a glass layer applied on outer surfaces of the porous bodies as well as on an end face of the shaft, a plurality of pockets formed in the glass layer at positions corresponding to the air conduits, and a plurality of orifices formed in each of the plurality of pockets such that a gap formed between the glass layer and a bearing main body is communicated with the air supply chamber by the pockets, orifices and porous bodies. The pockets and orifices can be formed simultaneously by a laser machining. A distribution in pressure within a gap formed between the glass layer and a bearing main body can be uniform.
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