Head-gimbal assembly
A technology of universal joints and components, applied in the direction of supporting head, arm parts structure, driving/moving recording head, etc., can solve problems such as limiting positioning accuracy, and achieve the effect of rigidity improvement
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[0031] Preferred embodiments of the present invention are described below. For clarity of the description, descriptions and drawings will be omitted and simplified below as appropriate. In the various drawings, the same reference numerals denote the same elements. In order to clarify the description, the same descriptions are omitted as necessary. In the embodiments, a hard disk drive (HDD) is explained as an example of a disk drive.
[0032] The HDD of this embodiment is provided with a secondary actuator having a positioning mechanism based on a Voice Coil Motor (VCM) and a positioning mechanism based on one or more piezoelectric elements on the suspension (micro drive actuator actuator). The piezoelectric element is fixed to the top of the suspension. As the piezoelectric element expands and contracts, the suspension deforms, and the head slider is finely driven in the radial direction of the disk.
[0033] The suspension of this embodiment has a variable plate fixed t...
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