Page 548 - ISCAR(MILLINGCATALOG 38_2021)
P. 548

USER GUIDE
      MILLING INSERTS  GRADES for APPLICATIONS and MATERIALS  ISO M  15 - 20  21 - 28  High Temp.   & Hardened






                                                                                                   ISO H
                                      ISO P
                                                                                         ISO S
                                                                              ISO N
                                                                     ISO K
                                                                                                   38 - 41
                                          12 - 13
                                1 - 11
                                                                                        31 - 37
                                                          14
                Material groups
                                                                                                 Hard Steel
                                         Stainless
                                                     Stainless Steel
                                       Steel Ferritic  Austenitic & Duplex  Cast Iron Nonferrous
                                Steel
                                                                                        Alloys
                                                   (Ferritic-Austenitic)
                                       & Martensitic
                                                                                                  Cast Iron
                        Harder
                               IC5400
                                                                      IS8
                                                                                                    IB55
                                                                                        IC840
                                IC30N
                                                                                                    IB85
                                IC808
                                                        IC840
                                                                                         IC380
                                          IC5500
                                (908)   IC808 (908)   IC808 (908)   IC5100     ID5     IC808 (908)  IC30N
                                                                     (4100)
                                IC810                 IC830 (928)   DT7150     IC04     IC5820**  IC808 (908)
                                (910)*
               MILLING
               Indexable        IC830   IC830 (928)   IC330 (328)    IC810     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
                                             N n                N   [rev/min]  Spindle speed
                                                       b        Vf  [mm/min]  Feed speed
                              ap
                       Vf                           hm
                                             Vf                 fz  [mm/tooth] Feed per tooth
                      D     fz
               Calculations                                     Z           Number of teeth
               Cutting 4     Vc =  π ∙ D ∙ N   [m/min]          fN  [mm/rev]  Feed per revolution
                                       1000min
                                                                       3
                                                                    [cm / min] Metal removal rate

                                                                Q
               Spindle speed  N =  Vc ∙ 1000     [rev/min]      ap  [mm]    Depth of cut
                                                                            Width of cut
                                                                b
                                                                    [mm]

                                     π ∙ D
                                                                Th  [min]   Machining time
               Feed speed    Vf = fz ∙ Z ∙ N  [mm/min]          Lw  [mm]    Machining length
                                                                         2
               Feed per tooth  fz =    Vn       [mm/tooth]      Kc  (1)  [N/mm ]  Specific cutting force  2
                                     N ∙ Z
                                                                            Specific cutting force for 1 mm  chip section
                                                                    [N/mm ]
                                                                         2
                                                                Kc1
               Feed per revolution fN = fz ∙ Z [mm/rev]         hm  [mm]    Average chip thickness
                                                                mc (1)      Chip thickness factor
               Metal removal rate Q =  ap ∙ b ∙ Vf   [cm /min]
                                               3

                                      1000                      k   [degrees]  Cutting edge angle
                                                                P   [kW]    Machining power
               Machining time  Th =   Lw    [min]               h           Machine efficiency
                                   V f                          P   =       Pc + Pm
               Specific cutting          -mc      2             P   -       Total Machining Power
               force         Kc = Kc1 ∙ hm   [N/mm ]
                                                                Pc  -       Net Power=Cutting Power
               Average chip                                     Pm  -       Motor Power (while not cutting)
               thickness in   hm ≈ fz ∙ √  b                    (1)   See page 726
               shoulder milling          D     [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
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