Head locator for mounting a head to a gimbal

Details Head locator for mounting a head to a gimbal Head locator for mounting a head to a gimbal

1993-07-08

1994-12-13

Psitos, Aristotelis

Metal working

Method of mechanical manufacture

Electrical device making

360104, 360109, 156 64, G11B 5105

Patent

active

053719395

ABSTRACT:
In positioning a transducer head with respect to a supporting arm, the transducer head is subject to both a normal force and a moment force and has first and second air bearing surfaces. The apparatus includes a controller and first and second sensors for detecting the overturning moment and being adapted for providing data representative of the overturning moment to the controller. A first actuator varies the position of the load arm and a second actuator varies the position of the transducer head. The first and second actuators act in concert to negate the overturning moment. A third sensor detects the position of the first air bearing surface with respect to a known level reference and a third actuator positions the first air bearing surface of the transducer head. A fourth sensor detects the position of the second air bearing surface with respect to a known level reference and a fourth actuator positions the second air bearing surface of the transducer head. The controller calculates total normal force and differential force loads on the air bearing surfaces and generates commands to the first and second actuators to position the transducer head responsive to the calculated forces to achieve a desired differential force loading on the first and second air bearing surfaces after the head is glued to the load arm.

REFERENCES:
patent: 3510374 (1970-05-01), Walker
patent: 4866836 (1989-09-01), Von Brandt
patent: 5225950 (1993-07-01), Crane

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