Apparatus for adjusting the gram load of head gimbal assemblies

The gram load of head gimbal assemblies (HGA) of a head stack assembly (HSA) is adjusted before the HSA is installed in a disk drive. Each HGA includes an elongated flexible member having a bend that is transverse to the longitudinal axis of the HGA. The apparatus includes means for removably mounti...

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Bibliographische Detailangaben
Hauptverfasser:	TUCKER, LARRY E, HEIST, WILLIAM P
Format:	Patent
Sprache:	eng
Schlagworte:	GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Beschreibung
Zusammenfassung:	The gram load of head gimbal assemblies (HGA) of a head stack assembly (HSA) is adjusted before the HSA is installed in a disk drive. Each HGA includes an elongated flexible member having a bend that is transverse to the longitudinal axis of the HGA. The apparatus includes means for removably mounting the HSA for movement in a plane parallel to the longitudinal axis of the selected HGA to a Gram Load Adjusting (GLA) station, means to restrain movement of the HGA during gram load adjustment, a force-transmitting bar having an elongated bearing edge, means for positioning the bar with the edge parallel to the bend and in force-transmitting contact with the bend area of the flexible element, and means for moving the edge to adjust the gram load to a desired value.