Method of manufacturing dynamic pressure bearing having large lo

Details Method of manufacturing dynamic pressure bearing having large lo Method of manufacturing dynamic pressure bearing having large lo

1997-02-06

1998-08-04

Schwartz, Larry I.

Metal working

Method of mechanical manufacture

Process for making bearing or component thereof

72377, B21D 2200

Patent

active

057875790

ABSTRACT:
A dynamic pressure bearing has a large load-carrying capacity, and a ridge portion defined between adjacent grooves is prevented from damaging an opposite surface. The bearing includes an axial bearing surface having dynamic pressure generating grooves formed thereon by plastic working. The bearing has ridge portions defined between the adjacent dynamic pressure generating grooves. A top end of the ridge portion has rounded edge portions and a flat bearing surface defined between the edge portions. Since the edge portions of the top end are rounded, an opposite surface is prevented from being damaged. Further, the presence of the flat bearing surface defined between the edge portions results in increased load-carrying capacity.

REFERENCES:
patent: 4254540 (1981-03-01), Bilak
patent: 4380355 (1983-04-01), Beardmore et al.
patent: 4514097 (1985-04-01), Daly
patent: 4516422 (1985-05-01), Morikawa et al.
patent: 5188462 (1993-02-01), Hooper et al.
patent: 5592847 (1997-01-01), Sarkisian et al.

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