SPINDLE ASSEMBLY Russian patent published in 2015 - IPC B23B19/02 B24B41/04 B23Q1/38 B23Q1/40 

FIELD: machine building.

SUBSTANCE: invention refers to machine building and can be used in spindle assemblies. The spindle assembly contains a hollow spindle, coaxially located inside the bearing assemblies, one of them is made as thrust ball bearing with device of its pre-tensioning to compensate wear of the parts of the spindle assembly, and another - in form of radial thrust roller bearing, internal ring is in contact with the cone surface of the spindle and is pressed at one side by nuts via the bushing coaxial to the spindle, and from another side - by lid with seal located perpendicularly to the spindle axis. The seal contains casing and chamber with holes for the cooling liquid input and output, at that the chamber input is connected with the heat exchanger, and exit - via the pressure gauge with pneumatic and hydraulic accumulator, the heat exchanger via the shutdown fitting and filter is connected with the pneumatic and hydraulic accumulator connected with the tank having funnel and connected via the bypass with shutdown valve, and via the pressure gauge is connected with the pneumatic and hydraulic accumulator.

EFFECT: higher reliability and durability of the spindle assembly.

5 dwg