Centering mechanism for moving coil force motor
AssigneeHR Textron, Inc.
InventorsStephen J. Tranovich, James L. Coakley
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Abstract
A method of manufacturing a moving coil force motor particularly adapted for utilization with a hydraulic servovalve. The method includes aligning a flexure spring with respect to the permanent magnet structure and thereafter securing the permanent magnet structure and flexure spring within a case for the force motor. Subsequently, the coil structure is aligned with respect to the gap provided in the permanent magnet pole pieces by relatively moving the motorcase with respect to the coil until the appropriate position is attained and thereafter securing the case against further movements.
Claims4
A method of manufacturing a moving coil force motor having fixed permanent magnet pole pieces defining an air gap therebetween disposed within a motorcase and a movable coil mounted on a flexure spring member to precisely position the coil within the gap comprising the steps of:
- aligning said flexure spring member centrally of said permanent magnet pole pieces;
- rigidly securing said aligned spring and permanent magnet pole pieces within said motorcase;
- affixing said movable coil to a driven member and centrally of said aligned spring;
- relatively moving said motorcase with respect to said movable coil until movable coil is centered within said air gap;
- and
- securing said motorcase against further movement.
Dependencies are inferred from the claim text.