TY JOUR TI ROTARY-HELICAL TECHNOLOGICAL SYSTEMS FOR PARTS MACHINING KW technological system KW screw container KW vibratory activator KW extension spring KW finishing KW strengthening KW load mass JO Bulletin of Bryansk state technical university AU Belokur, K.A. AU Serga , G.. AU Lebedev , V.. AU Yakovlev , D.. PY 2016 IS 2016 PB Bryansk State Technical University