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Title: 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:
 [1]
  1. (Knoxville, TN)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
862889
Patent Number(s):
US 4037496
Application Number:
04/719,637
Assignee:
United States of America as represented by United States Energy (Washington, DC) ORNL
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}
}

Patent:

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