Page 587 - Iscar
P. 587

USER GUIDE




            Coolant Pressure and Volume Recommendations


                                                                  Required Coolant Pressure
                                                                  Optimum pressure
                   60                                 20          Good pressure                                      SOLID CARBIDE DRILLS
                                                                  Minimum pressure
                  Coolant Pressure p[bar]  40         16  Coolant Volume V[l/min]  Required Coolant Volume
                   50
                                                                   Optimum volume
                                                      12
                   30
                                                                   Good volume
                   20
                                                                   Minimum volume
                                                      8
                   10
                   0.0                                4
                         3  5     10    15     20             Required coolant pressure and volume for SCD
                               Tool Diameter d(mm)
                                                              drills with internal coolant spiral nozzles.
                Force and Power Characteristics
                Feed Force                                    Net Power Consumption
                 (kN)                                           (kW)


                 3.0                                           3.0
                 2.5                                           2.5
                 2.0                                           2.0
                 1.5                                           1.5
                 1.0                                           1.0
                 0.5                                           0.5
                 0.0                                           0.0
                     2   4    6   8   10  12   14  16  18          2    4   6   8    10  12  14  16  18
                                                Drill Diameter                                 Drill Diameter
                                                D (mm)                                         D (mm)
                   f=0.30 mm/rev                                 f=0.30 mm/rev
                   f=0.25 mm/rev                                 f=0.25 mm/rev
                   f=0.20 mm/rev                                 f=0.20 mm/rev
                                                              Material:   SAE 4340
                                                              Speed:     100 m/min
                                                              Values may change for different materials and
                                                              drilling conditions.


                Stability                                     Tool Life
                The stability of the application volume is important in order   Drills should not be used with flank
                to obtain the very best tool life and hole accuracy. Check   wear exceeding 0.2-0.3 mm.
                the condition of the machine spindle, fixture and fixturing
                of the component to secure maximum stability and rigidity.
                Unstable conditions can cause tool breakage.                            0.2-0.3 mm








                       Max 0.02 mm




                                                   Max 0.02 mm
                                                                 Correct Direction     Incorrect Direction
                Stationary Drill      Rotating Drill         External Coolant      External Coolant





                                                                                                                  583
                                                                                                                  583
   582   583   584   585   586   587   588   589   590   591   592