Carl Kaeser opened his machine shop in Germany in 1919. 100
years later and KAESER is now a global supplier of compressed
air solutions that remains true to its origins. In fact a rich history
of tradition and innovation to this day allows us to continue to
push the boundaries of compressed air technology!
You can be assured that when you choose a KAESER compressor,
from design to manufacture, it has been developed for optimum
efficiency, reliability and ease of maintenance, with an energy
savings potential of up to 30 percent*.
And, all KAESER products are ready to take advantage of the
future-orientated benefits of Industrie 4.0. The result; more
compressed air and more savings!
Let us help you optimise your compressed air systems energy
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*Savings may vary depending on utilisation
KAESER HP_Eng News NZ_Sept 19.indd 1 1/08/2019 9:18:18 AM
REN363
vibration control system concerns
Tool Centre Point (TCP) vibration
due to the various vibration modes
of a machine tool's mechanical
structure. Until now, even if the
machine is equipped with a high
resolution encoder (integrated in
the servo motor) it has been
impossible to damp the TCP
vibration, simply because it is not
measured. Although complex
system modelling and state-space
control could possibly provide some
effective results, the complexity is
very high and the compensation
robustness is quite weak. For
example, in the case of a small
parameter change, such as inertia,
the effect of the compensation
would be lost entirely.
However, by using NUM’s new active
vibration control system to measure
and dynamically alter the TCP
acceleration in each of the main
X, Y and Z axis directions, it is now
possible to damp the vibration very
accurately. Using this approach, tool
head vibration can effectively be
eliminated, significantly reducing
tool wear and maximising the MRR
of the machining process.
All acceleration data is processed
within the drive in the digital
domain, which means that it can
be cyclically transmitted to the
Flexium+ NCK and stored in the
NCK buffer. The data can then be
uploaded to the Windows operating
system for further evaluation,
or for use with NUM’s process
monitoring software. It is especially
useful for preventive maintenance
applications, where it can provide
early indication of potential
machine problems before they
become expensive repair tasks.
Typically these include detecting
spindle vibration caused by bearing
problems, detecting the onset of
performance deterioration such as
increased friction or backlash, and
detecting excessive tool wear or
breakage.
Vibration damping is off. Trace 2 shows the X axis
speed, while Trace 1 shows that the measured point
on the machine is vibrating at its natural frequency
(about 3 Hz).
Vibration damping is on. Trace 2 shows the X axis
speed, while Trace 1 shows that the measured point
on the machine is moving and that the acceleration
is only the programmed rate (the natural frequency
has been completely compensated).
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