Каталог Iscar монолитные сверла 2022 - страница 36

SOLID CARBIDE DRILLS USER GUIDE General - Calculations Spindle Speed (min-1) Example n= vc ∙1000 π ∙ D Drill DR 220-044-25-07-2D-N (Ø22 mm) - Material No. 4kc=2200 N/mm2k=90º, sin k=1 vc=200 m/min CMh=50 $/h η=0.75 Cutting Speed (m/min) km=1 kf=1 f=0.15 mm/rev L=25 mm h=10 mm vc = π ∙ D ∙ 1000 n n = vc ∙ 1000π∙D∙ 200 ∙ 1000π ∙ 22= 2894 min-1 Table Feed (mm/min) vf = f ∙ n=0.15 ∙ 2894 = 434 mm/min vf = f ∙ n Q = vf ∙ π ∙ 4000 D2 434 ∙ 3.14 ∙ (22)2=4000 Material Removal Rate (cm3/min) = 165 cm3/min Q= vf ∙ π ∙ D2 4000 Pc = Q60.000 ∙ η ∙ Kc ∙ sin k 65 Power Requirement (kW) = 60.000 ∙ 0.75 ∙ 2200 ∙ 1 =8.06 kW Pc = Q 60.000 ∙ η ∙ kc ∙ sin k Mc = f ∙ Kc 10000 ∙ D28 ∙ sin k Torque (Nm) = 0.15 ∙ 2200 10000 ∙ 2228 ∙ 1 ∙1 = 20 Nm Mc = f ∙ kc 1000 ∙ D2 8 ∙ sin k∙km Ff = 0.63 ∙ D2 ∙f ∙ Kc ∙ sin k Feed Force (approx.) (N) = 0.63 ∙ 222∙ 0.15 ∙ 2200 ∙ 1 ∙1 = 2286 n Ff = 0.63 ∙ D2 ∙ f∙kc∙sin k∙kf Tc = L+hVf = 25+10434 = 0.08 min/piece Machining Time (min/piece) Cc = CMh 60 ∙ Tc = 50 ∙ 0.08 60 Tc = L+h vf = 0.067 $/piece Machining Cost ($/piece) kc Values Cc = CMh 60 ∙Tc MaterialGroup kc Value MaterialGroupkc Value1200019  900 f Feed/rev mm/rev 2 2100 20 1000 3 2150 21   500 kc Material specific cutting force N/mm2 4 2200 22   800 h Distance from drill point to workpiecebefore feeding mm 5 2200 23   8006210026  700 L Depth of hole mm 7 2100 27   700 CMh Cost/machine hour $/h 8 2100 28 1700 η Machine efficiency % 9 2100 31 3000 k 90º }180° bottom drills 10 2500 32 3100 sin k 1 DR... 11 3250 33 3300 k 70º }140° point angle drills 12 2300 34 3300 sin k 0.94 13 2800 35 3200 14 2600 36 1700 Drill Geometry Coeficient 15 1100 37 1700 DCM DCN SCD 16 1300 38 4600 km 1 0.85 0.85 17 1100 39 4700 kf1 0.85 0.85 18 1800 40 4600 41 4500 184 ISCAR