Patent ID: 6571460
Filing Date: 2003-06-03
Classification: G11B,Y10S,Y10T

Abstract:
A rotary actuator balancing system for use with a rotary actuator, for a rotatable head stack assembly portion in a disk drive, the balancing system comprising:a support plate having upper and lower sides thereof, the upper side being sized and configured to receive the rotary actuator thereon in a weight supporting relationship therewith; a force measurement device in mechanical communication with the support plate, the force measurement device being sized and configured to sense weight distribution characteristics of the rotary actuator when supported by the support plate for determining an actual rotary actuator center-of-gravity; a mass modifying device sized and configured to modify weight distribution characteristics of the rotary actuator to locate the actual rotary actuator center-of-gravity at a desired rotary actuator center-of-gravity location; and a mass modifying device support sized and configured to selectively move the mass modifying device with respect to the support plate, the mass modifying device support being in mechanical communication with force measurement device.