Hydrodynamic bearing and shaft and method for manufacturing the same
AssigneeFoxconn Technology Co., Ltd.
InventorCHUEN-SHU HOU
Life of this patent
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Abstract
A hydrodynamic bearing (300) has a bearing surface adapted for receiving a shaft to rotate thereon. The bearing surface has a plurality of grooves (34) defined therein. The grooves for generating hydrodynamic pressure each has at least one interior surface (3421). The at least one interior surface has a sloping surface along a circumferential direction of the hydrodynamic bearing.
Claims17
A hydrodynamic bearing having a bearing surface adapted for receiving a shaft to rotate thereon, the bearing surface having a plurality of grooves defined therein, the grooves for generating hydrodynamic pressure each having at least one interior surface, the at least one interior surface having a sloping surface along a circumferential direction of the hydrodynamic bearing.
A shaft having a plurality of grooves defined therein, the grooves for generating hydrodynamic pressure each having at least one interior surface, the at least one interior surface having a sloping surface along a circumferential direction of the shaft.
A method for manufacturing a hydrodynamic bearing or a shaft with hydrodynamic pressure generating grooves comprising:
- providing a substrate with a plurality of protrusions formed on a periphery thereof, each of the protrusions including two branches, at least one edge of each branch along a circumferential direction of the hydrodynamic bearing or a shaft being constructed to have a sloping surface;
- placing the substrate in a middle of a hollow mold, then injecting a feedstock of powder and molten binder into the mold to surround the substrate under pressure, thus forming a desired bearing preform;
- separating the substrate from the bearing preform by means of catalytic debinding;
- separating the molten binder from the bearing preform;
- and
- sintering the bearing preform to thereby form the hydrodynamic bearing.
Dependencies are inferred from the claim text.