Page 210 - ISCAR(HOLE_MAKING_CATALOG_65)

USER GUIDE
DEEP DRILLING - BTA SYSTEM

Technical Guide

STS - Setting guidelines for cutting loads, fluid DTS - Setting guidelines for cutting loads, fluid
pressure and flow rate during STS operation pressure and flow rate during DTS operation
Net power Net power
25 25
20 Vc = 100 m/min 20 Vc = 100 m/min
f = 0.25 mm/rev f = 0.25 mm/rev
15 15
Pc (kW) 10 Pc (kW) 10

5 5
Vc = 70 m/min Vc = 70 m/min
f = 0.15 mm/rev f = 0.15 mm/rev
0 10 20 30 40 50 60 70 0 10 20 30 40 50 60 70
Drill dia. (mm) Drill dia. (mm)
Feed force Feed force
15 15

Vc = 100 m/min
Vc = 100 m/min f = 0.25 mm/rev
10 f = 0.25 mm/rev 10
Ff (kN) Ff (kN) 5
5
Vc = 70 m/min
Vc = 70 m/min f = 0.15 mm/rev
f = 0.15 mm/rev
0 10 20 30 40 50 60 70 0 10 20 30 40 50 60 70
Drill dia. (mm) Drill dia. (mm)
Torque Torque
0.5 0.5

0.4 0.4 Vc = 100 m/min
Vc = 100 m/min f = 0.25 mm/rev
0.3 f = 0.25 mm/rev 0.3
T (kNm) 0.2 T (kNm) 0.2

0.1 0.1 Vc = 70 m/min
Vc = 70 m/min f = 0.15 mm/rev
f = 0.15 mm/rev
0 10 20 30 40 50 60 70
0 10 20 30 40 50 60 70 Drill dia. (mm)
Drill dia. (mm)
Coolant pressure Coolant pressure
10 2 1MPa = 1.0 N/mm 2
1MPa = 1.0 N/mm 2 1Mpa ≈ 10 atm
8 1Mpa ≈ 10 atm 1.5
6 1
P (MPa) 4 P (MPa)

0.5
2
0 10 20 30 40 50 60 70
0 10 20 30 40 50 60 70
Drill dia. (mm) Drill dia. (mm)
Coolant volume Coolant volume
400 200
150
300
q (l/min) 200 q (l/min) 100

100 50
0 10 20 30 40 50 60 70
0 10 20 30 40 50 60 70 Drill dia. (mm)
Drill dia. (mm)
The above values should not be used as the exact recommendations. They may need modification depending on the machining conditions, materials, etc.

208 ISCAR