Thermal compensation mechanism for magnetic disk drive data stor

Details Thermal compensation mechanism for magnetic disk drive data stor Thermal compensation mechanism for magnetic disk drive data stor

1988-06-16

1989-08-22

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360106, G11B 1700

Patent

active

048601357

ABSTRACT:
A magnetic disk memory data storage device has a unitary arm assembly mounted for rotation by an actuator for carrying the tranducers and shifting them across the disk surfaces. The assembly is subjected to varying temperature during normal operation of the device which causes differential rotation of the individual arms and consequent misalignment of them. In a design of interest, the arm nearest the deck is most affected. At least some of this misalignment can be compensated for by placing a slot in the edge of at least one arm and placing a body with a different thermal coefficient into the slot with an interference fit. If the body has a smaller thermal coefficient than the arm assembly's, the slot should be on the edge opposite the direction in which the misalignment occurs.

REFERENCES:
patent: 4207601 (1980-06-01), Desai et al.
patent: 4602305 (1986-06-01), Ghose

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