In plane, push-pull parallel force microactuator

Details In plane, push-pull parallel force microactuator In plane, push-pull parallel force microactuator

1998-12-14

2000-12-26

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Head mounting

For adjusting head position

G11B 555

Patent

active

061668907

ABSTRACT:
A method and apparatus for providing cross track positioning of a disk drive head relative to a formatted track on a disk platter. A load beam is attached via a living hinge to a cradle. Piezo crystals are mounted on the cradle in plane with the load beam. The crystals are attached to levers formed into a proximal end of the load beam and activated with electric signals from a microactuator control to elongate or contract. Activated simultaneously the crystals exert a push force on one lever and a pull force on the other lever causing the load beam to pivot about the living hinge acting as a fulcrum. The load beam is attached to the cradle via cradle panels located at the distal end portion of the load beam. The cradle panels are preferably perpendicular to the load beam thereby providing low resistance in the cross rack direction and support in the vertical direction.

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