Browse Prior Art Database

Arm for a Hard File Head/Arm Assembly

IP.com Disclosure Number: IPCOM000036890D
Original Publication Date: 1989-Nov-01
Included in the Prior Art Database: 2005-Jan-29
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Brooks, WW: AUTHOR [+3]

Abstract

The figure illustrates a self-locating arm design which features cutouts, a support bridge, a datum pad, beveled surfaces, and a corner- break. High storage density hard files require good dynamic performance from low mass miniaturized components, while minimizing assembly cost and preserving rework capability. This arm addresses these needs.

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Arm for a Hard File Head/Arm Assembly

The figure illustrates a self-locating arm design which features cutouts, a support bridge, a datum pad, beveled surfaces, and a corner- break. High storage density hard files require good dynamic performance from low mass miniaturized components, while minimizing assembly cost and preserving rework capability. This arm addresses these needs.

The arm provides precise alignment of the head arm assembly in the file without the need for separate alignment tooling. Four beveled datum surfaces 1 contact an actuator to provide location in the plane of the disk. A rear datum pad 2 contacts the actuator to provide location along the length of the arm. A front cutout 3 and an elongated rear cutout 4 reduce the arm mass for improved dynamic performance.

A support bridge 5 along with elongated rear cut out 4 tailors the arm compliance to provide uniform clamping along the length of the arm independent of the tolerance gap between the sides of the arm and the actuator. Datum features 1 and 2 along with cut out and support bridge features 4 and 5 allow the actuator to be assembled with machine screws. A corner break 6 is used as an orienting feature during assembly and inspection.

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