Process for lapping air bearing surfaces

Details Process for lapping air bearing surfaces Process for lapping air bearing surfaces

1998-06-30

2000-04-18

Eley, Timothy V.

Abrading

Abrading process

Utilizing fluent abradant

451 36, 451 63, B24B 100

Patent

active

060508795

ABSTRACT:
The invention presents a method for conditioning and texturing of lapping plate surfaces used in high precision lapping, the conditioning and texturing is achieved without the use of free abrasive particles and slurries through use of a conditioning ring having a hard bound abrasive particle layer. The conditioning ring is contacted with the lapping plate surface, both rotating in the same direction but at different RPMs resulting in grooved microprofiles of the lapping plate surface. The invention provides a lapping process using the conditioned and textured lapping plate surface along with free abrasive particles carried in the grooves in combination with glycols and citrates for ABS generation.

REFERENCES:
patent: 4448634 (1984-05-01), Lampert
patent: 4685440 (1987-08-01), Owens
patent: 5527424 (1996-06-01), Mullins
patent: 5595527 (1997-01-01), Appel
patent: 5632667 (1997-05-01), Earl et al.
patent: 5655951 (1997-08-01), Meikle et al.
patent: 5664987 (1997-09-01), Rentein
patent: 5733179 (1998-03-01), Bauer
patent: 5755613 (1998-05-01), Uchida et al.
patent: 5902172 (1999-05-01), Utashiro

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