GTMA AEROSPACE SUPPLIERS

13

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

accuracy.

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

are

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

control parameters

• LAC - load-dependent adaptation

• MAC - motion-dependent adaption.

Contact for more information Neil Prescott,

Managing Director or Philip Lodge, Sales

Manager, on email sales@heidenhain.co.ukheidenhain.co.uk" target="_blank" title="Visit heidenhain.co.uk">heidenhain.co.uk

or visit the website.

www.heidenhaingb.com

13

GTMA

NEW PRODUCTS

FROM BLUM

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.

www.blum-novotest.com

ADDITIVE MANUFACTURE

CUTS AIRCRAFT COSTS

Airbus Group Innovations, formerly

EADS Innovation Works (IW), the aerospace and defence group's

research

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

emissions.

www.eos.info