System for measuring and adjusting pitch and roll in a suspension
AssigneeATS Automation Tooling Systems Inc.
InventorsSow Long Wong, Yi Quiang Yang, Choong Wee Hong
Life of this patent
Estimating the term…
Abstract
The invention relates to an apparatus and method for measuring and adjusting the pitch and roll angle in the suspension head for magnetic readers for disk drives. The system includes a linear advancement system, a measurement system, an adjustment and heat treatment system and control algorithms TO measure, adjust and correct the roll and pitch in a suspension head.
Claims16
A system for measuring and adjusting the roll and pitch angles of a suspension for a magnetic disk drive, the suspension having flexure arms comprising:
- a linear advancement sub-system for advancing successive suspensions to a measurement and adjustment position;
- a measurement sub-system for determining the roll and pitch angle of the flexure arms;
- an adjustment sub-system for mechanically bending the roll and pitch angles of the flexure arms to an aligned or over-aligned position;
- and,
- a heat treatment sub-system for applying a heat treatment to the flexure arms when in the aligned or over-aligned position.
A method of adjusting the roll and pitch angles of a suspension for a magnetic reader for a disk drive, the suspension having flexure arms comprising the steps of
- a. measuring the pitch and roll angle of the flexure arms;
- b. determining if the measured pitch and roll angles of the flexures are within a pre-determined specification;
- c. bending the suspension to an adjusted position if the pitch and/or roll angle of the flexure arms is/are out of specification;
- d. holding the flexure arms in the adjusted position and applying a heat treatment to the flexure arms to relieve bending stresses in the flexure arms;
- and,
- e. holding the flexure arms in the adjusted position for a time sufficient to allow the flexure arms to cool.
Dependencies are inferred from the claim text.