FIELD: machine tool manufacture, namely gear cutting machine tools for making cone gear wheels with helical tooth by means of cutter head by rolling around process. SUBSTANCE: machine tool includes tool unit arranged in cradle; blank unit; tuning unit; hydraulic step motors mounted in gear teeth generating circuit and designed for rotating cradle with cutter head mounted in it and for rotating blank; hydraulic pulse generators mounted in tuning units of said hydraulic step motors and designed for providing in gear teeth generating circuit gear ratio corresponding to relation of pulse frequency values determined in dependence upon designed number of working slits of rotating slide-valve sleeve of hydraulic pulse generators. In order to simplify design of machine tool, it is provided with builtup wheel. Slide-valve sleeve of hydraulic pulse generator of drive unit of cradle is arranged with possibility of rotation by means of pinion engaged with outer perimeter of builtup wheel. Slide-valve sleeve of hydraulic pulse generator of drive unit of blank is arranged with possibility of rotation by means of gear wheel mounted on common shaft with pinion engaged with inner perimeter of builtup wheel. EFFECT: simplified design, lowered metal consumption of machine tool. 1 dwg
