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Microdrills for Use on Titanium and Stainless Steels
Remove Chips Efficiently and Safely at High Feeds
The Winner series of spiralgeometry
microdrills is particularly
designed for deep
drilling in titanium and special
stainless steels. Newly released
by Zecha Hartmetall-
Werkzeugfabrikation
GmbH, these durable, highprecision
microtools feature
an innovative geometry, carefully
selected substrate, and
distinctively formulated coating
of titanium aluminium
nitride (TiAlN). Thus, they
are especially well suited for
drilling holes at high feed
rates and with good chip
removal efficiency.
The Zecha Winner 636
microdrill, which is available
in stock diameters ranging
from 0.5 to 3 mm, is able to drill holes
8 to 12 times as deep as its diameter,
without internal cooling, in titanium
The established Rotaflex
high-performance holefinishing
system for metalworking
manufacturers has
now been developed further
by Widia Inc. With both
roughing and precisionfinishing
heads available,
the Rotaflex fine-boring system
is well suited for both
roughing and fine-finishing
operations over the diameter
range of 6 to 520 mm
(0.236 to 20.4 in.).
New system upgrades
that reduce vibration make
possible feed rates measuring
as much as 20% higher in rough
machining applications, improving
machine tool productivity and enabling
maintenance to be scheduled at
longer intervals. Widia has designed
this system to exhibit a good ratio of
price to performance.
28 European Tool & Mould Making ■ September 2009
alloys up to quality class 4 and in
martensitic stainless steels. Its Quick
Chip spiral geometry facilitates chip
Cutting Tools
removal even at high feed
rates; the steep helical spiral
angle of 35° at the cutting
edge generates small chips,
which are removed swiftly
and safely via the degressive
spiral of 12°.
Winner-series tools’ special
surface finish, including
a polished cutting edge
and a self-centring tip,
reduces axial pressure. Their
TiAlN coating makes them
even more resistant to high
machining temperatures.
Together, the coating and
strong cutting geometry
ensure long service lifetimes
and, thus, suitability
for use in large-scale manufacturing
applications.
Zecha Hartmetall-Werkzeugfabrikation GmbH
Versatile, Upgraded Hole-Finishing System Offers Roughing
and Precision-Finishing Heads in a Broad Diameter Range
The system’s very stable KM-TS
coupling and newly developed RFX
coupling, a major enhancement in the
upgraded Rotaflex, are applicable to
almost every machine spindle. They
provide for easy assembly and disassembly
and very stable operation. The
KÖNIGSBACH-STEIN, GERMANY
www.etmm.info/2009/09/041
RFX features a bayonet-style
coupling that ensures cylinder
face contact and transmits
torque forces better.
Two radial screws for clamping
enable the coupling to
be preloaded and allow rotation
in both directions. Standard
insert pocket seats support
the use of Widia carbide
grades for higher running
speeds.
New microadjustable cartridges
for the Rotaflex system
have a proprietary radial
adjustment mechanism that
permits radial adjustment
without the axial insert position being
affected. This mechanism makes possible
higher hole-finishing accuracy
while facilitating adjustment.
Widia Inc.
LATROBE, PA, USA
www.etmm.info/2009/09/042