Non-circular feature for boss tower engagement

摘要

A head stack assembly comprising an actuator arm having an aperture therein, a head suspension assembly comprising a load beam having a mounting region with a aperture therein, and a base plate adapted to attach the head suspension assembly to the actuator arm, with the base plate comprising a boss tower having an outside surface and a swaging hole. One of the actuator arm aperture, the boss tower outside surface or the swaging hole is non-circular to provide increased compression between the boss tower and the actuator arm aperture in the roll direction than in the pitch direction. Methods of making a boss tower are also provided.

主权项

1. A head stack assembly comprising:
a longitudinal direction and a lateral direction; an actuator arm having an aperture therein; a head suspension assembly comprising a load beam having a mounting region with an aperture therein; and a base plate adapted to attach the head suspension assembly to the actuator arm, the base plate comprising a boss tower having an outside surface and a swaging hole, wherein the actuator arm aperture is oval or elliptical with a longitudinal axis extending in the longitudinal direction, or wherein the boss tower outside surface is oval or elliptical with a longitudinal axis extending in the lateral direction.