FIELD: machine tool manufacture. SUBSTANCE: machine tool includes blank assembly, tool assembly, tuning unit, hydraulic step motors mounted in rolling out circuit for rotating tool and providing its lengthwise motion by means of lead screw. Step motors are joined through pipelines with hydraulic pulse generators having rotary slide valve sleeve. Machine tool also includes differential mechanism mounted in rolling out circuit and joined with tool, additional hydraulic step motor for driving differential mechanism and additional hydraulic pulse generator joined by means of pipelines. Slide valve sleeve of additional hydraulic pulse generator is mounted with possibility of rotation by means of gear wheel mounted on lead screw for lengthwise motion of tool. EFFECT: simplified design, enhanced accuracy of machine tool due to decreasing number of mechanical transmission links. 1 dwg
