Setting guidelines for cutting loads, fluid pressure

and flow rate during STS operation

Net powerFeed forceTorque
25150.5
20V0.4
f c = 100 m/minV
= 0.25 mm/revf c = 100 m/minV
10= 0.25 mm/revf c = 100 m/min
150.3= 0.25 mm/rev
100.2
5
5VVc = 70 m/min0.1
c = 70 m/minfV
f = 0.15 mm/rev= 0.15 mm/revf c = 70 m/min
= 0.15 mm/rev
010203040506070010203040506070010203040506070
Drill dia. (mm)Drill dia. (mm)Drill dia. (mm)

Coolant pressure Coolant volume

10 400

1MPa = 1.0 N/mm2

8 1Mpa ≈ 10 atm 300 6 200 4 100 2

0 10 20 30 40 50 60 70 0 10 20 30 40 50 60 70

Drill dia. (mm) Drill dia. (mm)

Setting guidelines for cutting loads, fluid pressure

and flow rate during DTS operation

Net powerFeed forceTorque
25150.5
20VV0.4V
f c = 100 m/minf c = 100 m/minf c = 100 m/min
= 0.25 mm/rev10= 0.25 mm/rev= 0.25 mm/rev
150.3
100.2
5
Vc = 70 m/min
5f0.1
Vc = 70 m/min= 0.15 mm/revVc = 70 m/min
f = 0.15 mm/revf = 0.15 mm/rev
010 2030 4070 60 50 020 10 3070 60 50 40 30 10 0 70 60 50 40 20
Drill dia. (mm)Drill dia. (mm)Drill dia. (mm)
Coolant pressureCoolant volume
2200
1MPa = 1.0 N/mm 2
1Mpa ≈ 10 atm
1.5150
1100
0.550

0 10 20 30 40 50 60 70 0 10 20 30 40 50 60 70