Page 28 - HOLE MAKING CATALOG p149-184
P. 28
SOLID CARBIDE DRILLS USER GUIDE
Coolant Pressure [bar]
Coolant Volume [l/min]
Coolant Pressure and Volume Recommendations
60 Stability
50 20 The stability of the application volume is important in order
to obtain the very best tool life and hole accuracy. Check
40 16 the condition of the machine spindle, fixture and fixturing
of the component to secure maximum stability and rigidity.
Unstable conditions can cause tool breakage.
30 12 Stationary Drill Rotating Drill
20 8 Max 0.02 mm
10 4
0.0 10 15 20
35
Tool Diameter (mm)
Required Coolant Pressure Required Coolant Volume Max 0.02 mm
Optimum pressure Optimum volume Incorrect Direction
Good pressure Good volume Correct Direction
Minimum pressure Minimum pressure
Required coolant pressure and volume for SCD
drills with internal coolant spiral nozzles.
Force and Power Characteristics External Coolant External Coolant
Feed Force
Tool Life
(kN)
Drills should not be used with flank wear
3.0 exceeding 0.2-0.3 mm.
2.5 0.2-0.3 mm
2.0
1.5
1.0
0.5
0.0
2 4 6 8 10 12 14 16 18
Drill Diameter (mm)
f=0.30 mm/rev
f=0.25 mm/rev
f=0.20 mm/rev
Net Power Consumption
(kW)
3.0
2.5
2.0
1.5
1.0
0.5
0.0
2 4 6 8 10 12 14 16 18
Drill Diameter (mm)
f=0.30 mm/rev
f=0.25 mm/rev
f=0.20 mm/rev
Material: SAE 4340
Speed: 100 m/min
Values may change for different materials and
drilling conditions.
176 ISCAR
