Каталог Iscar дисковые фрезы и фрезерные пластины 2022 - страница 230

USER GUIDE MILLING INSERTS GRADES for APPLICATIONS and MATERIALS ISO P ISO M ISO K ISO N ISO S ISO H 1 - 11 12 - 13 14 15 - 20 21 - 28 31 - 37 38 - 41 Material groups Stainless Stainless Steel Hard Steel High Temp. Steel Steel Ferritic Austenitic & Duplex Cast Iron Nonferrous & Hardened (Ferritic-Austenitic) Alloys & Martensitic Cast Iron Harder IC5400 IC808 (908) IC808 (908) IS8 ID5 IC808 (908) IB55 IC30N IC840 IB85 IC808 IC5100 IC5500 IC840 IC380 IC30N (908) (4100) IC810 IC830 (928) DT7150 IC04 IC5820** IC808 (908) (910)* MILLING Indexable IC830 IC810 IC830 (928) IC330 (328) IC08 IC882 DT7150 (928) (910) IC845 IC330 (328) IC882 IC28 IC330 (328) Coolant Tougher N N Y N Y Y N First choice * for steel castings ** for milling with high pressure coolant (HPC) supply Milling Calculations N fz Vc [m/min] Cutting speed D [mm] Tool diameter κ Nn N [rev/min] Spindle speed ap b Vf [mm/min] Feed speed Vf hm Vf fz [mm/tooth] Feed per tooth D fz Calculations Z Number of teeth π∙D∙N fN [mm/rev] Feed per revolution Cutting 4 Vc = 1000min [m/min] Q [cm3/ min] Metal removal rate ap [mm] Depth of cut Vc ∙ 1000 Spindle speed N= π∙D [rev/min] b [mm] Width of cut Th [min] Machining time Feed speed Vf = fz ∙ Z ∙ N [mm/min] Lw [mm] Machining length Vn Kc [N/mm2] Specific cutting force Feed per tooth fz = N ∙ Z [mm/tooth] Kc1(1) [N/mm2] Specific cutting force for 1 mm2 chip section Feed per revolution fN = fz ∙ Z [mm/rev] hm [mm] Average chip thickness ap ∙ b ∙ Vf mc(1) Chip thickness factor Metal removal rate Q= 1000 [cm3/min] k [degrees] Cutting edge angle P [kW] Machining power Lw Machining time Th = Vf [min] h Machine efficiency P = Pc + Pm Specific cutting force Kc = Kc1 ∙ hm-mc [N/mm2] P - Total Machining Power Pc - Net Power=Cutting Power Average chip Pm - Motor Power (while not cutting) thickness in (1) See page 726 shoulder milling hm ≈ fz ∙ √ bD [mm] Values for Motor Power Pm for b/D≤0.1 Max. Machine Power [kW] Motor Power Pm [kW] Average chip 5.5 0.4 thickness in (sink ∙ 180 ∙ b ∙ fz) 7.5 0.4-0.6 shoulder milling hm = π ∙ D ∙ arcsin (b / D) [mm] 11.0 1.0 for b/D>0.1 15.0 1.5 18.0 2.2 ( ap ∙ b ∙ Vf ∙ kc ) Machining power P= 6 ∙ 107 ∙ h [kW] 22.0 2.5 Motor Power Pm has a value of approximately 7 to 12% of Maximum Machine Power 546 ISCAR