Browse Prior Art Database

Head To Disk Compliance System

IP.com Disclosure Number: IPCOM000089780D
Original Publication Date: 1977-Dec-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Beck, JL: AUTHOR [+3]

Abstract

Magnetic head 3, flexible disk 1 and four flexible cables 6, providing tractive force on head 3, provide a compliance system for successfully wear testing heads and disks, and for making dynamic measurements.

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Head To Disk Compliance System

Magnetic head 3, flexible disk 1 and four flexible cables 6, providing tractive force on head 3, provide a compliance system for successfully wear testing heads and disks, and for making dynamic measurements.

Conventional wear testing techniques in flexible disk files have historically been accomplished by conducting tests using the actual disk drives themselves. This technique is system oriented, and when wear does occur from a test of this nature, it is extremely difficult to determine what variables caused the wear simply because several variables were involved. The head-to-disk compliance system shown in the figures helps to add technical understanding to the wear phenomenon between heads and disks by eliminating some of the variables that are always present in the system-type wear test.

Flexible disk 1 is clamped at its center by clamp 7 onto rigid lower base plate
2. Head 3 is dragged on disk 1 as plate 2 and disk 1 are rotated in direction A by the four flexible cables 6 fixed to stationary support 10. Cables 6 allow head 3 to follow the contour of disk 1 freely, and they have a high spring constant to eliminate motion of head 3 parallel to the surface of disk 1. Head 3 is loaded on disk 1 with a load point F by load beam 8, and this technique keeps the mass of the head 3 the same as in functional style heads. The point of application of the load beam 8 to the head 3 may be varied and the mass loading may be different toward...