OBRABOTKAMETALLOV Vol. 27 No. 3 2025 technology а b Fig.4. Fluctuations of technological modes: a – V = 216.5 m/min; b – V = 343.6 m/min Ta b l e 1 Variations of technological modes, cutting forces and main tribological parameters for V = 216.5 m/min Parameter state at the moment of fluctuation V, m/min s, mm/rev t, mm FXY, N l1, mm h, μm τк, MPa Ka Tmax, оС ∆T, оС AT, оС (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) nominal 216.5 0.198 0.5 228 0.24 23 508 2.005 1139.2 0 – V→max 217 0.234 0.51 257 0.28 25 471 1.998 1134.5 −4.7 26.8 V→min 216.2 0.173 0.48 230 0.21 24 619 2.013 1161.2 +22.1 s→max 216.8 0.242 0.49 271 0.29 27 498 1.998 1149.7 +10.6 10.6 s→min 216.3 0.157 0.47 218 0.19 21 576 2.703 1142.6 +3.4 t→max 216.8 0.225 0.53 247 0.28 24 460 1.998 1133.1 −6.1 35.9 t→min 216.3 0.176 0.46 235 0.20 25 651 2.014 1168.9 +29.8
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