Deflection lapping apparatus and method for hydrodynamic bearing

Details Deflection lapping apparatus and method for hydrodynamic bearing Deflection lapping apparatus and method for hydrodynamic bearing

1996-08-09

2000-01-25

Morgan, Eileen P.

Abrading

Abrading process

Glass or stone abrading

2960312, 2960316, 360103, 360122, G11B 542

Patent

active

060172649

ABSTRACT:
A lapping apparatus for controlling curvature of a hydrodynamic bearing slider includes a bar of slider substrate material and a lapping carrier. The bar of slider substrate material includes at least one slider body having a bearing surface, and a back surface, with the back surface having a periphery and a center. The lapping carrier has a support surface which supports the slider back surface at the periphery and has a recess in the support surface adjacent the slider center such that the back surface is unsupported at the slider center. During the lapping process, the center of the slider deflects into the recess in the lapping carrier such that less material is lapped from the bearing surface at the center than at the periphery, which results in a positive curvature change in the bearing surface.

REFERENCES:
patent: 3811856 (1974-05-01), Ruszczyk et al.
patent: 5072322 (1991-12-01), Yasar et al.
patent: 5086553 (1992-02-01), Goto et al.
patent: 5105529 (1992-04-01), Yasar et al.

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