FIELD: machine tool manufacture, namely gear grinding machine tools for working cylindrical gear wheels at rolling them out by grinding wheel. SUBSTANCE: machine tool includes circuit with step hydraulic motors for rotating blank and simultaneously moving it in lengthwise direction. Step motors are kinematically connected by means of worm gearings and leading screw with round table and with rectangular table respectively. Each hydraulic motor is controlled by means of separate hydraulic pulse generator. EFFECT: simplified construction of machine tool, its enhanced accuracy due to elimination of several mechanical transmissions, lowered metal consumption. 1 dwg
