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he development of an HSTM HD
series 5-axis CNC machining cen-
tre from HAMUEL Maschinenbau
GmbH & Co. KG – a member of the
SCHERDEL
Group
– offers an excellent
solution for the machining of relatively
unconventional materials. This applies
in particular to difficult-to-cut materials,
such as titanium and titanium alloys or
Inconel
®
. These materials are used, for
example, for the production of gas and
steam turbines or the assembly of jet
engines. Experience has shown that ef-
ficiency can be improved greatly with
high heat and temperature-resistant
materials. However, the machining of
such materials is extremely challenging
and thus an ideal task for the new
HAMUEL HSTM HD machine.
Production requirements
On the one hand, stringent require-
ments are placed on the blade geome-
try and the blade foot during turbine
production. On the other hand, a series
of solutions is required to reduce the
number of clamping operations when
machining jet engine components. This
means combining process chains in a
machining system which until now have
been dismissed as incompatible tech-
nologies.
The latest mechanical concepts and
innovative process technologies are in-
corporated in these operating se-
quences. A prime example of this is the
exclusive special gas cooling (instead
of a coolant lubricant) which has been
shown to increase service life by up to
approx. 30% or, when working with
other parameters, deliver significant
reductions in the machining cycle times
(in this case without a longer service
life).
When working with vibration-sensitive,
thin-walled work pieces, such as titani-
um turbine blades, machine compo-
nents with excellent vibration absorp-
tion properties are required. Therefore,
mineral casting machine parts and
body are preferred. Particularly dynam-
ic and vibration-absorbing hydrostatic
bearing technology is also in great de-
mand, e.g. for work piece-rotary axes.
Manufacturing turbine blades
The manufacturers of turbine blades
face the following challenges:
In the blade section:
• Freeform high quality surfaces, ex-
tremely complex 3 D profile: the com-
puted path profile must be created ex-
actly to achieve the contour required
for the calculated turbine efficiency.
Critical areas are, in particular, the
leading edge and the trailing edge;
extremely high angular acceleration
rates are necessary at these points in
order to work with ideal process con-
ditions.
In the foot section:
• Highest levels of precision for perfect
alignment in the respective installation
position
• Manufacturing tolerances of less than
one hundredth of a millimetre
• Batches usually containing about
400-500 blades
This results in distinctive machine re-
quirements for the production of turbine
blades. The special work piece-bound-
ary conditions of blade machining led
to the development of a unique highly-
dynamic 5-axis machine with up to sev-
en driven axes. These are divided into:
• Rotary and axial work piece move-
ment with one-sided work piece
clamping or alternative clamping at
both ends (for longer and thinner
blades and titanium blades)
6
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High performance is our pr
T
New HSTM HD series 5-axis CNC machining centr
and improved performance
Integrated process cooling
Staff profile
Weʼd like to introduce staff mem-
bers who will act as your contact
if required.
Jochen Schaede
Sales manager at HAMUEL
Maschinenbau GmbH & Co. KG
Jochen Schaede has been the
sales manager at the SCHERDEL
subsidiary HAMUEL Maschinen-
bau GmbH & Co. KG since the
summer of 2011. After leaving
school, he studied mechanical en-
gineering at RWTH Aachen Uni-
versity. Jochen subsequently
worked in various medium-sized
companies, specializing in special
machine construction. He initially
operated in the field of develop-
ment and application engineering,
focussing on CNC processes, au-
tomation components and inte-
grated manufacturing cells. At the
beginning of the 1990s, his career
path veered away from technolo-
gy and led to him specializing in
the Germany-wide sales of a
Japanese machinery manufactur-
er. He successfully developed a
market for an import product in an
environment traditionally dominat-
ed by European competitors. As
an international sales representa-
tive of a German machinery man-
ufacturer, he gained further sales
and marketing experience.
The new sales manager at
HAMUEL looks forward to the
challenge of implementing trend-
setting technologies in project
sales and to positioning HAMUEL
as a leading medium-sized ma-
chine manufacturer with extensive
in-house production and a high-
level of flexibility. In order to
achieve these goals, he worked
tirelessly on the HAMUEL stand
at the EMO trade fair in Hanover
in September 2011 and has al-
ready travelled to Japan and India
to discuss projects with interna-
tional customers.
Jochen is married with three
grown-up children. His hobbies in-
clude nature and wildlife as well
as art and culture.