Electromagnetic variable degrees of freedom actuator systems and methods
Abstract
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.
- Inventors:
-
- Pleasanton, CA
- Plaistow, NH
- (Brookline, MA)
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 960207
- Patent Number(s):
- 7492117
- Application Number:
- 11/490,988
- Assignee:
- Lawrence Livermore National Security, LLC (Livermore, CA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23Q - DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING
H - ELECTRICITY H02 - GENERATION H02K - DYNAMO-ELECTRIC MACHINES
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
Citation Formats
Montesanti, Richard C, Trumper, David L, and Kirtley, Jr., James L. Electromagnetic variable degrees of freedom actuator systems and methods. United States: N. p., 2009.
Web.
Montesanti, Richard C, Trumper, David L, & Kirtley, Jr., James L. Electromagnetic variable degrees of freedom actuator systems and methods. United States.
Montesanti, Richard C, Trumper, David L, and Kirtley, Jr., James L. Tue .
"Electromagnetic variable degrees of freedom actuator systems and methods". United States. https://www.osti.gov/servlets/purl/960207.
@article{osti_960207,
title = {Electromagnetic variable degrees of freedom actuator systems and methods},
author = {Montesanti, Richard C and Trumper, David L and Kirtley, Jr., James L.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {2}
}
Works referenced in this record:
Properties and prospective applications of ultra thin layered rubber-metal laminates for limited travel bearings
journal, February 1983
- Rivin, E. I.
- Tribology International, Vol. 16, Issue 1