TY JOUR TI ACCURACY OF HOLE PROCESSING WITH A COMBINED TOOL KW holes KW mills KW flanges KW precision holes KW combined tool JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Goldobina, V.G. PY 2021 IS 6 PB Belgorod State Technological University named after V.G. Shukhov