Method for manufacturing hydrodynamic bearing and shaft

Details Method for manufacturing hydrodynamic bearing and shaft Method for manufacturing hydrodynamic bearing and shaft

2011-08-23

2011-08-23

Chang, Rick K (Department: 3726)

Metal working

Method of mechanical manufacture

Process for making bearing or component thereof

C029S898000, C264S610000, C264S635000, C264S645000, C264S656000, C384S012000, C384S120000

Reexamination Certificate

active

08001691

ABSTRACT:
A method for manufacturing a hydrodynamic bearing (30) comprises steps of: step (201): providing a substrate (10) with a plurality of protrusions (14) formed on a periphery thereof; step (202): 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 (20); step (203): separating the substrate from the bearing preform by means of catalytic debinding; step (204): separating the binder from the bearing preform; step (205): sintering the bearing preform; step (206): precision machining the bearing preform to form the desired hydrodynamic bearing.

REFERENCES:
patent: 5752318 (1998-05-01), Fannar
patent: 6012845 (2000-01-01), Lyon
patent: 6698097 (2004-03-01), Miura et al.
patent: 6905617 (2005-06-01), Chang et al.
patent: 7146733 (2006-12-01), Yamashita et al.
patent: 7431505 (2008-10-01), Shibahara et al.
patent: 2006/0002640 (2006-01-01), Chen et al.
patent: 10306827 (1998-11-01), None
patent: 2006123602 (2006-11-01), None

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