FIELD: machine tool manufacture, possibly making drive systems with reciprocation motion of actuators. SUBSTANCE: drive unit for moving organ of machine tool includes main lead screw mounted in supports; mechanism for rotating lead screw; additional lead screw kinematically joined with main lead screw through gear wheel whose axle supports movable organ of machine tool. Gear wheel is in the form of worm gear or spiral gear. If lead screws are in the form of worms they are mutually joined by worm gear. EFFECT: possibility of providing wide range of motion speed of movable organ of machine tool. 1 dwg
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