FIELD: mechanical engineering. SUBSTANCE: method provides that first, facing spindle side of bar, is centered for holes with simultaneous making of facets along its whole length. Then drilling down to center of bar with some exceeding is exercised. After that bar is turned by 180 deg and holes centering is exercised with simultaneous making of facets on opposite side of bar along its whole length. After that drilling down to center of bar with some exceeding is exercised. EFFECT: method is used in metal treatment by cutting. 3 dwg
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