Combination spindle-drive system for high precision machining
Patent
·
OSTI ID:862889
- Knoxville, TN
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.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
- DOE Contract Number:
- W-7405-ENG-26
- Assignee:
- United States of America as represented by United States Energy (Washington, DC)
- Patent Number(s):
- US 4037496
- Application Number:
- 04/719,637
- OSTI ID:
- 862889
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/82/
airbearing
aligned
arrangement
arrangement eliminates
attraction
bearings
carry
combination
combination spindle-drive
conductive
conventional
cup-shaped
currents
currents induced
drive
drive-means
eddy
eddy current
eddy currents
eliminates
fabrication
finishes
force
forces
form
highly
highly conductive
induced
machining
magnetic
modified
optical
optical quality
precision
precision machining
produce
provided
quality
reaction
removing
rotor
source
spindle
spindle-and-drive
spindle-drive
stationary
stator
support
surface
surface finish
torque
utilize
vibration
airbearing
aligned
arrangement
arrangement eliminates
attraction
bearings
carry
combination
combination spindle-drive
conductive
conventional
cup-shaped
currents
currents induced
drive
drive-means
eddy
eddy current
eddy currents
eliminates
fabrication
finishes
force
forces
form
highly
highly conductive
induced
machining
magnetic
modified
optical
optical quality
precision
precision machining
produce
provided
quality
reaction
removing
rotor
source
spindle
spindle-and-drive
spindle-drive
stationary
stator
support
surface
surface finish
torque
utilize
vibration