FIELD: machine tool fittings, possibly for superfinish operations and for working superhard materials. SUBSTANCE: in order to simplify working of materials due to multidegree wide-band oscillations such as twisting oscillations, cutter includes body-holder to which preliminarily twisted bellows are welded. Piezopillar is placed inside body-holder. Free end of piezopillar supports through diamagnetic member blended washer terminated by magnet with core; coaxially through air gap thrust bearing made of magnet is mounted; it is secured together with diamagnetic member to said washer surrounded by winding. The last is placed inside screw-contact. Second contact of piezopillar is carbon-containing lubricant. Winding and piezopillar are connected in series or in parallel with two generators. EFFECT: enhanced working of materials. 3 dwg
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