FIELD: machine tools for drilling and(or) grinding parts. SUBSTANCE: machine tool includes two headstocks (16,17) mounted in frame with possibility of independent vertical and HORIZONTAL motion one relative to another along their lengthwise direction. When one headstock 17 operates for working (by means of tool) part fastened in holder 20, another headstock may move from position behind magazine 24 in forward direction for receiving tool from said magazine. When one headstock continues working another headstock with another tool may be accelerated until necessary rotation number and be fed towards part. EFFECT: significantly reduced time period for changing tool. 4 cl, 3 dwg
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