Method and apparatus for ultrasonically texturing ABS of magneti

Details Method and apparatus for ultrasonically texturing ABS of magneti Method and apparatus for ultrasonically texturing ABS of magneti

1997-01-03

1999-10-19

Eley, Timothy V.

Abrading

Abrading process

Utilizing fluent abradant

451165, 451 56, B24B 100, B24C 100

Patent

active

059678801

ABSTRACT:
A method and apparatus for texturing the air bearing surface (ABS) of a magnetic head of a hard disk drive includes juxtaposing the ABS with an ultrasonically-driven sonitrode having a diamond die end. An alumina slurry is disposed between the sonitrode and ABS at a slight pressure, with the slurry having a grit size of less than one micron. The sonitrode is then vibrated to agitate the slurry and thereby texture the head. If desired, a cavity can be formed in the die, with the cavity being a mirror image of a portion of the head, e.g., the sensing element, that is not intended to be textured.

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patent: 5347412 (1994-09-01), Nitta et al.
patent: 5478270 (1995-12-01), Cuomo et al.

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