Spindle device having bearings lubricated with oil jet

Details Spindle device having bearings lubricated with oil jet Spindle device having bearings lubricated with oil jet

1975-08-04

1977-02-08

Goodman, Philip

Cutlery

184 622, F16C 124

Patent

active

040069443

ABSTRACT:
A spindle device has pre-loaded anti-friction bearings which are so lubricated with oil jet accelerated through jet nozzles facing thereto that very high speed rotation with lower levelled vibration is permitted for the spindle.
The spindle assembly has a rear bearing holder longitudinally slidable in the housing for pre-loading and cooling oil flows in the bearing holder. The spindle assembly further has a high frequency electric motor therein and is sealed up against dust penetration from outside.
Air or oil vapor is prevented from staying in the sealed spindle assembly by a gas outlet which is provided in the assembly. Jetted oil toward the bearings and bearing holder cooling oil are recollected through a suction pump into a reservoir, and are fed by a pressurizing pump from the reservoir to the spindle assembly. Oil is there cooled by a cooling device.
The circulating oil temperature and oil amount are detected by sensors to be observed.

REFERENCES:
patent: 3042462 (1962-07-01), Rosskopf
patent: 3729064 (1973-04-01), Wolf et al.

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