FIELD: precision metal cutting machine tools such as lathes. SUBSTANCE: unit includes body 1 with seat for supporting cutter 2 mounted with possibility of axial motion relative to its own axis and piezoelectric members 4 kinematically joined with cutter 2 and designed for electrical connection with control system. Cutter unit has rod 3 supporting on its lateral faces two piezoelectric members 4 and arranged in cavity closed along its perimeter in body of cutter 1. EFFECT: enhanced accuracy, high speed turning process due to adaptive control of oscillation level of blank and cutter. 1 dwg
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