Setting guidelines for cutting loads, fluid pressure

and flow rate during STS operation

Net powerFeed forceTorque
880.1
77
0.08
6Vc = 75 m/min6f
f = 0.25 mm/revf = 0.25 mm/rev
55= 0.25 mm/rev 0.06
44
0.04
33
2V2f
c = 75 m/minf = 0.15 mm/rev = 0.15 mm/rev 0.02
f = 0.15 mm/rev
11
000

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

Coolant pressure Coolant volume

10 200 9 180 8 1MPa = 1.0 N/mm2 160 7 1Mpa ≈ 10 atm 140 6 120 5 100 4 80 3 60 2 40 1 20 0 0 16 17 18 19 20 21 22 23 24 25 26 27 28 16 17 18 19 20 21 22 23 24 25 26 27 28

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

Setting guidelines for cutting loads, fluid pressure

and flow rate during DTS operation

Net powerFeed forceTorque
10100.1
9V
f c = 100 m/min
8= 0.25 mm/rev 80.08
f = 0.25 mm/rev
7f
= 0.25 mm/rev
660.06
5
440.04
3V
c = 70 m/minf
2f = 0.25 mm/rev 2= 0.15 mm/rev 0.02
f = 0.15 mm/rev
1
000
18 19 20 21 22 23 24 25 26 27 2818 19 20 21 22 23 24 25 26 27 2818 19 20 21 22 23 24 25 26 27 28
Drill dia. (mm)Drill dia. (mm)Drill dia. (mm)
Coolant pressureCoolant volume
3120
1MPa = 1.0 N/mm 2
2.5100

1Mpa ≈ 10 atm 2 80 1.5

60 1 40 0.5 0

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