GTMA AEROSPACE SUPPLIERS
HEIDENHAIN DYNAMIC CONTROL
REDUCES CUTTING TIMES
The active vibration damping functionality
of HEIDENHAIN's groundbreaking Dynamic
Precision and Dynamic Efficiency TNC
control development results in faster, more
stable and more predictable machining,
and 20-25 per cent improvements in heavy
machining metal removal rates. It also
results in higher levels of surface finish and
Dynamic Precision combats machining errors
(measured at the tool centre point) caused by
dynamic machine movement and improves
machining accuracy by combining 'crosstalk'
compensation, active vibration damping and
load motion, plus position adaptive control.
The company is known for a product range
that offers solutions for all applications in
which the highest possible accuracy, reliable
reproducibility and repeatability, safe process
management, high machine dynamics, simple operation and of course maximum efficiency
required. This makes them ideal
for sectors such as aerospace and medical
where zero defects are crucial.
Active vibration damping (AVD) suppresses
dominant low-frequency mechanical vibration of up to 100 Hz and at finishing feed
rates of 3,000 to 6,000 mm/min caused by
machine set-up (typically in the frequency
range 10 to 30 Hz) or elasticity in the
power train (for example, deformation of
the ballscrew or elasticity in the drive belt).
AVD makes milling fast and vibration-free
by suppressing disturbances resulting from
the acceleration processes. Indeed, to
attain comparable surface finishes without
AVD, it would be necessary to reduce jerk
values by a factor of three.
In addition to AVD, Dynamic Precision functionality also embraces:
• CTC - compensation of accelerationdependent position errors
• PAC - position-dependent adaptation of
• LAC - load-dependent adaptation
• MAC - motion-dependent adaption.
Contact for more information Neil Prescott,
Managing Director or Philip Lodge, Sales
Manager, on email firstname.lastname@example.org" target="_blank" title="Visit heidenhain.co.uk">heidenhain.co.uk
or visit the website.
Blum Novotest is showing new products
at Farnborough alongside established
innovations. It will especially be promoting the Tool
Monitor Adaptive Control
(TMAC) tool monitoring solution.
TMAC has won plaudits from globally
renowned aerospace OEM's as it eliminates
broken cutting tools and reduces damage
or scrapping of components. The system
protects the CNC machine, provides valuable cutting process
information and since
it was launched has reduced the high cost
of replacement tools, lost production and
rejected parts by effectively measuring tool
wear in real time.
It operates on the principle that the horsepower required
to cut a part increases as
the condition of the cutting edges of the tool
deteriorates. TMAC has a main controller,
horsepower transducer, vibration sensor
and the TMS display software, all of which
can be simply integrated into any CNC
machine tool and Windows-based PC.
Blum can be seen on the Midlands
Aerospace Alliance Stand B14 in Hall 1.
CUTS AIRCRAFT COSTS
Airbus Group Innovations, formerly
EADS Innovation Works (IW), the aerospace and defence group's
and technology organisation, continues
to evaluate manufacturing methods,
such as the Direct Metal Laser Sintering
(DMLS) additive manufacturing process
developed by GTMA supplier EOS.
A joint study compared energy consumption for the life cycle of an
Airbus A320 nacelle hinge bracket produced from a steel casting
and from titanium powder by DMLS, including raw material manufacture,
the production process and the end-of-life phase.
Energy use was shown to be slightly smaller on the EOS platform. The main advantage was that the additive process
reduces consumption of raw material 25 per cent compared
with subtractive machining. In addition, the optimised design of
the nacelle hinge bracket allowed Airbus Group Innovations
and EOS to demonstrate the potential to reduce weight per aircraft by approximately
10 kg, which would lower overall CO2