Page 634 - Iscar

USER GUIDE
DEEP HOLE DRILLING

Drill Setup

Rotating Drill Stationary Drill
• Can be applied on symmetrical and • Applied on symmetrical workpieces
non-symmetrical workpieces • Improved hole straightness and bushing wear
• Drill to bushing center misalignment should • Drill to bushing center misalignment should
not exceed 0.02 mm not exceed 0.02 mm
Bushing Stationary Rotating Workpiece Bushing
Rotating Drill Workpiece
Stationary Drill

Max.
Max. 0.02 mm
0.02 m

Drill Bushing and Workpiece Tolerance Relative Positioning

Pre-drilled Hole
A large pre-drilled hole (larger than D-a) ensures
precise hole size and center location.

A 0.5 X A max Guidance bushing tolerance (G6)
Hole tolerance Drill head tolerance (h6)

Recommended Coolant Pressure and Volume ≤ 50 mm Machine Power
Coolant Pressure Coolant Volume kw
Kgf/cm 2 L/min
140
Alloy Steel (HB300)
100 500 120
v=100m/min, f=0.25mm/rev
80 400 100
60 300
80
40 200
60
20 100
40 Carbon Steel (HB200)
10 20 30 40 50 v=100m, f=0.25mm/rev
Diameter mm 20
Recommended Coolant Pressure and Volume > 50 mm 50 100 150 200 250 300 350
Coolant Pressure Coolant Diameter mm
Kgf/cm 2 Volume
L/min Machine Thrust Force
N
45 1800 7000
40 1600 Alloy Steel (HB300)
35 1400 6000 v=100m/min, f=0.25mm/rev
30 1200 5000
25 1000 4000
20 800 Carbon Steel (HB200)
15 600 3000 v=100m, f=0.25mm/rev
10 400 2000
5 250 1000
50 100 150 200 250 300 350
50 100 150 200 250 300 350
Diameter mm Diameter mm

ISCAR
630 ISCAR
630