Electromagnetic variable degrees of freedom actuator systems and methods
- Pleasanton, CA
- Plaistow, NH
The present invention provides a variable reluctance actuator system and method that can be adapted for simultaneous rotation and translation of a moving element by applying a normal-direction magnetic flux on the moving element. In a beneficial example arrangement, the moving element includes a swing arm that carries a cutting tool at a set radius from an axis of rotation so as to produce a rotary fast tool servo that provides a tool motion in a direction substantially parallel to the surface-normal of a workpiece at the point of contact between the cutting tool and workpiece. An actuator rotates a swing arm such that a cutting tool moves toward and away from a mounted rotating workpiece in a controlled manner in order to machine the workpiece. Position sensors provide rotation and displacement information for a swing arm to a control system. A control system commands and coordinates motion of the fast tool servo with the motion of a spindle, rotating table, cross-feed slide, and in feed slide of a precision lathe.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- Lawrence Livermore National Security, LLC (Livermore, CA)
- Patent Number(s):
- 7,492,117
- Application Number:
- 11/490,988
- OSTI ID:
- 960207
- Country of Publication:
- United States
- Language:
- English
Properties and prospective applications of ultra thin layered rubber-metal laminates for limited travel bearings
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journal | February 1983 |
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