FIELD: mechanical engineering; may be used in boring of deep holes. SUBSTANCE: boring head has body 1 with longitudinal recesses in which cutter blocks 2 and 3 are installed with preset angular displacement, immovable guides 9 and flexible guides 10. Cutter block 3 is made for radial regulation. Cutter block 2 is installed in body 1 for axial radial and angular adjustment relative to block 3. Immovable guides 9 are installed on the side of maximum central angle between cutter blocks. EFFECT: higher efficiency. 3 dwg
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