TY JOUR TI IMPROVING THE EFFICIENCY OF MILLING HOLES WITH A SMALL-SIZED TOOL IN THE CONDITIONS OF AUTOMATED PRODUCTION KW milling KW end cylindrical cutters KW accuracy KW roughness KW wear KW hole machining KW optimization JO Bulletin of Bryansk state technical university AU Davydov, V.M. AU Nikitenko, A.V. AU Gimadeev, M.R. AU Berkun, V.O. PY 2021 IS 2021 PB Bryansk State Technical University