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Drilling tools \ Technical introduction – solid carbide / HSSE drilling
drilling tools geometries
grinding/geometry:
HPC tip angle 140°
UNI
2-surface grinding
spiral angle 30°
2 drill heels on 3xD and 5xD
4 drill heels on 8xD and 12xD
dia. tolerance h7 or m7
advantages:
these geometries are specially developed for universal use
the various coatings with cutting edge preparation prevents micro-breakouts on the blades, thereby increasing
their service life
HPC grinding/geometry:
VA tip angle 140°
for HPC drilling in the material groups stainless steel, titanium, nickel and special alloys
2-surface grinding
spiral angle 30°
2 drill heels
dia. tolerance h7
advantages:
specially developed geometry for machining stainless steel, titanium, nickel alloys and special alloys
Ultra M coating with cutting edge preparation prevents micro-breakouts on the blades, thereby increasing the
service life
grinding/geometry:
HPC for HPC drilling in non-ferrous metals
ALU
tip angle 135°
spiral angle 15°
6 drill heels
dia. tolerance h7
advantages:
specialised use with long service life in non-ferrous metals such as aluminium, brass, bronze and cast iron
6 drill heels ensure even at very high cutting speeds for a drilling accuracy
latest ALU-CC coating technology with superior form-fitting properties of the blade ensures sharp cutting edges
and excellent sliding behaviour as well as optimum chip removal even at high cutting speeds
grinding/geometry:
Typ
U4 tip angle: 118°
spiral angle: 38°
precision-ground 4-surface grinding
optimised point thinning similar to cross grinding
straight main cutter
cutting material:
HSSE: HSS steel with 5% cobalt alloy with greater hot hardness for increased loads
advantages:
suitable for a wide range of applications thanks to the universal geometry design
high level of process reliability through precision grinding
extremely good centring properties thanks to the 4-surface grinding with point thinning results similar to cross-
grinding (no centring required)
low process forces (feeding force and torque) through optimised flute profile
extremely precise, dimensionally accurate drilling in terms of the diameter and the roundness through smooth
geometry design
Source: Hahn+Kolb Werkzeuge GmbH
Technical data subject to change. www.iconridge.com 9
Availability subject to country specific rules and regulations.
