UNIVERSAL SCREW-CUTTING LATHE Russian patent published in 2020 - IPC B23B3/00 

FIELD: machine building.

SUBSTANCE: in machine is introduced mechanism, which includes located in rolling bearings connecting shaft, one end of which is connected to output shaft of engine of stepless control of feed, and on other end - is installed movable coupling-gear, having the possibility of transmitting rotation to the lead screw by engagement with a gear or coupling fitted on a shaft rigidly connected to the lead screw, or transmitting rotation to the receiving apron of the gear by engaging the gear clutch with the gear, fitted on the shaft connected to the apron receiving shaft, wherein the connecting shaft is located on the same axis with the lead screw or with the apron receiving shaft.

EFFECT: simplification of machine design and expansion of its technological capabilities.

1 cl, 1 dwg