Combination spindle-drive system for high precision machining
Abstract
A combination spindle-drive is provided for fabrication of optical quality surface finishes. Both the spindle-and-drive utilize the spindle bearings for support, thereby removing the conventional drive-means bearings as a source of vibration. An airbearing spindle is modified to carry at the drive end a highly conductive cup-shaped rotor which is aligned with a stationary stator to produce torque in the cup-shaped rotor through the reaction of eddy currents induced in the rotor. This arrangement eliminates magnetic attraction forces and all force is in the form of torque on the cup-shaped rotor.
- Inventors:
-
- Knoxville, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 862889
- Patent Number(s):
- 4037496
- Application Number:
- 04/719,637
- Assignee:
- United States of America as represented by United States Energy (Washington, DC)
- 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-26
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- combination; spindle-drive; precision; machining; provided; fabrication; optical; quality; surface; finishes; spindle-and-drive; utilize; spindle; bearings; support; removing; conventional; drive-means; source; vibration; airbearing; modified; carry; drive; highly; conductive; cup-shaped; rotor; aligned; stationary; stator; produce; torque; reaction; eddy; currents; induced; arrangement; eliminates; magnetic; attraction; forces; force; form; surface finish; precision machining; highly conductive; eddy current; eddy currents; optical quality; arrangement eliminates; currents induced; combination spindle-drive; /82/
Citation Formats
Gerth, Howard L. Combination spindle-drive system for high precision machining. United States: N. p., 1977.
Web.
Gerth, Howard L. Combination spindle-drive system for high precision machining. United States.
Gerth, Howard L. Tue .
"Combination spindle-drive system for high precision machining". United States. https://www.osti.gov/servlets/purl/862889.
@article{osti_862889,
title = {Combination spindle-drive system for high precision machining},
author = {Gerth, Howard L},
abstractNote = {A combination spindle-drive is provided for fabrication of optical quality surface finishes. Both the spindle-and-drive utilize the spindle bearings for support, thereby removing the conventional drive-means bearings as a source of vibration. An airbearing spindle is modified to carry at the drive end a highly conductive cup-shaped rotor which is aligned with a stationary stator to produce torque in the cup-shaped rotor through the reaction of eddy currents induced in the rotor. This arrangement eliminates magnetic attraction forces and all force is in the form of torque on the cup-shaped rotor.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 26 00:00:00 EDT 1977},
month = {Tue Jul 26 00:00:00 EDT 1977}
}
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