Page 127 - ISCAR(HOLE_MAKING_CATALOG_65)
P. 127

USER GUIDE




          Machining Conditions

              Machine Power and Feed Force Requirements         Internal Coolant Pressure

                                                                Selecting Coolant Pressure and Flow Rate              INDEXABLE DRILLS
                Power required, in relation to drill diameter              Coolant Flow Rate (liter/min)
                 24                                                60
                 22                                                                               flow
                                                                                                  rate
                 20
                 18                                                45
                Power Pe (kW)  14 8                                30
                 16
                 12
                 10

                  4 6                                              15
                  2
                  0
                   16  20  24  28  30  34  38  42  46  50  54  58  62  66  70
                            Drill Diameter D (mm)                    16       25      35      45      60
                f=0.25                                                        Drill Diameter D (mm)
                f=0.18
                f=0.1                                                     Minimum Coolant Pressure (bar)
              Required Machine Power                            10
              Material: SAE 4140                                 9
              Cutting speed: 100 m/min
                                                                 8  7-13 X D
              For different cutting speeds, use factor as follows:
                                                                 7
                              Machine Power
                                                                 6  4.5 X D
                                    Pe · C
                                P =        η                     5  3 X D

                                                                    2 X D
                Vc [m/min]   100        150        200           4
                   C         1.0        1.5        2.0           3
              η=Machine efficiency
                                                                 2
                                                                 1
                       Feed force (thrust force) required,
                          in relation to drill diameter           16      25      35      45     55      65
                                                                              Drill Diameter D (mm)
                 12                                             * For special drills more than 4xD, it is recommended to use high coolant pressure
                 11                                             15–70 bar
                 10
                  9 8
                Power Pe (kW)  7 6 5 4





                  2 3
                  1
                  0
                   16  20  24  28  30  34  38  42  46  50  54  58  62  66  70
                            Drill Diameter D (mm)
                f=0.25
                f=0.18
                f=0.1

              Required Feed Force
              Material: SAE 4140









                                                                                                                   125
   122   123   124   125   126   127   128   129   130   131   132