Combination spindle-drive system for high precision machining
Patent
·
OSTI ID:7208623
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.
- Assignee:
- Energy Research and Development Administration
- Patent Number(s):
- US 4037496
- OSTI ID:
- 7208623
- Country of Publication:
- United States
- Language:
- English
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