Каталог Iscar вращающийся инструмент 2017 - страница 601

USER GUIDE General - Calculations Spindle Speed (min -1 ) Power Requirement (kW) vc •1000 Q f = Feed/rev mm/rev n= Pc= • kc • sin k π • D 60.000 • η kc = Material specific Cutting Speed (m/min) Torque (Nm) cutting force N/mm 2 h = Distance from drill π • D • n f • kc D 2 vc = point to workpiece mm Mc= 1000 • • sin k•km 1000 8 before feeding Table Feed (mm/min) Feed Force (approx.) (N) L = Depth of hole mm C Mh = Cost/machine hour $/h Ff = 0.63 • D vf = f • n •f•kc•sin k•kf η = Machine efficiency % 2 k = 90º 180° bottom drills } Material Removal Rate (cm3/min) Machining Time (min/piece) sin k = 1 DR... k = 70º 140° point angle drills vf • π • D 2 L+h } Q= Tc = sin k = 0.94 SCD.., DCM.., DCN.. 4000 vf Drill Geometry Coeficient SOLID CARBIDE DRILLS Machining Cost ($/piece) DCM DCN SCD km 1 0.85 0.85 C Mh Cc= •Tc kf 1 0.85 0.85 60 Example k c Values Drill DR 220-044-25-07-2D-N (Ø22 mm) k=90º; sin k=1 Material Group kc Value Material No. 4 kc=2200 N/mm 2 CMh=50 $/h η=0.75 1 2000 2 2100 vc=200 m/min f=0.15 mm/rev L=25 mm h=10 mm 3 2150 km=1 kf=1 4 2200 5 2200 6 2100 n= vc • 1000 = 200 •1000 =2894 min-1 7 2100 8 2100 π • D π • 22 9 2100 10 2500 11 3250 vf = f • n=0.15 • 2894=434 mm/min 12 2300 13 2800 14 2600 Q= vf • π • D 2 = 434 • 3.14 • (22) 2 =165 cm3/min 15 1100 4000 4000 16 1300 17 1100 18 1800 Pc= Q • kc • sin k= 165 • 2200 • 1 =8.06 kW 19 900 60.000 • η 60.000 • 0.75 20 1000 21 500 22 800 f • kc D 2 0.15 • 2200 Mc= • sin k= 222 • 1• 1=20 Nm 23 800 • • 1000 8 1000 26 700 8 27 700 28 1700 D 22 Ff=0.63 • • f • kc • sin k= 0.63 • •0.15 • 2200 •1• 1=2286 N 31 3000 2 2 32 3100 33 3300 34 3300 Tc = L+h = 25+10 = 0.08 min/piece 35 3200 vf 434 36 1700 37 1700 38 4600 Cc= CMh •Tc = 50 • 0.08 =0.067 $/piece 39 4700 60 60 40 4600 4 1 4500 For material groups, see pages 1008-1043 GYRO Auxiliary Devices for Lathe Machines Designed to Correct Misalignment on Stationary Operation T.I.R. max. 0.02 • Drills can be used on sloped surfaces up to 6°. When drilling sloped surfaces of more than 6°, reduce feed by 30-50% during penetration of up to 5 mm depth; or use a spot or pre-hole drill to avoid drill deviation or poor drill performance. Angular Adj. 1° Radial Adj. D2.0 597 597