ROLLING SCREW-NUT TRANSMISSION Russian patent published in 2021 - IPC B23Q5/26 F16H25/22 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to the field of mechanical engineering, and more specifically to the feed of metal-cutting machines. The rolling screw-nut transmission comprises a screw with a threaded groove of a semicircular section covering a screw-nut equipped with a similar groove, consisting of a housing and two coaxial halves, and balls placed in a channel formed by the grooves of the screw and nut. The transmission is equipped with a reversible gear hydraulic pump, a multiplier gearbox, a hydraulic tank and an adjustable throttle. There is a resilient elastic torus, coaxial with the screw and installed in the nut body with the possibility of interaction with its second half. The pump is connected to the throttle inlet pipe and the torus cavity, and the screw is connected to the hydraulic pump drive shaft through a multiplier gearbox.

EFFECT: increase in the durability of the transmission is achieved.

1 cl, 1 dwg