Combination spindle-drive system for high precision machining

Details Combination spindle-drive system for high precision machining Combination spindle-drive system for high precision machining

1976-09-01

1977-07-26

Hinson, Harrison L.

Turning

Severing or cut-off

Interrelated means for tool infeed and circumrotation

B23B 1902

Patent

active

040374963

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.

REFERENCES:
patent: 1185681 (1916-06-01), Kienzle
patent: 3058559 (1962-10-01), Ohrnberger
patent: 3710466 (1973-01-01), Williamson et al.
patent: 3752019 (1973-08-01), Kaneko

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