Goniometer loader for testing the height of a disk drive head gimbal assembly
AssigneePhase Metrics
InventorsJohn D. Marr, Pat Lee
Life of this patent
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Abstract
A hard disk drive flying height tester loader which moves a head gimbal assembly (HGA) about the pivot axis of the HGA. The HGA is mounted to a clamp that is attached to a pivot arm. The pivot arm is attached to a cam follower which follows a cam. The cam is moved by a motor that is attached to a stationary sideplate. Movement of the cam rotates the pivot arm, clamp and HGA between a first position and a second position. The pivot arm is Coupled to the stationary sideplate by a ball bearing assembly which has a radius of curvature. The center of the ball bearing radius intersects the pivot axis of the HGA so that the clamp and HGA rotate about the pivot axis when the motor and cam move the pivot arm between the first and second positions.
Claims17
A goniometer loader for testing a head gimbal assembly which has a pivot axis, comprising:
- a clamp that clamps the head gimbal assembly;
- a pivot assembly that is attached to said clamp so that the head gimbal assembly rotates about the pivot axis of the head gimbal assembly between a first position and a second position, and,
- a movement assembly that moves said pivot assembly and the head gimbal assembly between the first position and the second position.
A goniometer loader for testing a head gimbal assembly which has a pivot axis, comprising:
- clamp means for clamping the head gimbal assembly;
- pivot means for rotating the head gimbal assembly about the pivot axis of the head gimbal assembly between a first position and a second position;
- and,
- movement means for moving said clamp means and the head gimbal assembly between the first position and the second position.
A goniometer loader for testing a head gimbal assembly which has a pivot axis, comprising:
- a clamp that clamps the head gimbal assembly;
- a pivot arm that is attached to said clamp and moves between a first position and a second position;
- a side plate;
- a ball bearing assembly coupled to side pivot arm and said sideplate, said ball bearing assembly having a radius of curvature that has a center located on the pivot axis of the head gimbal assembly, wherein said pivot arm rotates about the pivot axis when said pivot arm moves between the first and the second position;
- and,
- a movement assembly that moves said pivot arm, said clamp and the head gimbal assembly between the first position and the second position.
Dependencies are inferred from the claim text.