TY JOUR TI Estimate of potentialities for product machinability improvement by high-speed steel tool with modified cutting part KW product KW machinability KW productivity KW drill KW working part KW tool life KW modification JO Science intensive technologies in mechanical engineering AU Martynov, V.V. AU Taranova, A.V. AU Evteev, A.V. PY 2020 IS 2020 PB Bryansk State Technical University