WORLD OF INDUSTRIES 05/2018 (EN)
WORLD OF INDUSTRIES 05/2018 (EN)
WORLD OF INDUSTRIES 05/2018 (EN)
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Bending without breaking<br />
AUTOMATION<br />
When simple or complex parts have to be chamfered,<br />
the machines from Trumpf make it possible to bend<br />
workpieces quickly and reliably with high precision.<br />
In the case of large and heavy parts, a bending device<br />
supports the process. In order to ensure the reliable<br />
supply of energy to this device, machine tool<br />
manufacturers relies on the series of energy tubes<br />
from igus.<br />
The Trumpf company is one of the world’s biggest machine tool<br />
manufacturers and has around 70 subsidiaries. Trumpf<br />
Maschinen Austria was founded in 1992 in Pasching, Austria, the<br />
centre of excellence for bending in the Trumpf Group. Here, the<br />
company makes various types of bending machines in different<br />
sizes. The products are a symbol of the highest level of experience<br />
and innovation in bending technology.<br />
Here in Pasching TruBend 5 000 series bending machines are<br />
built, of which more than 600 systems are manufactured each year.<br />
Press forces of 50 to 320 tons and edge lengths of 1.25 to 4 metres are<br />
achieved with this all-round machine.<br />
Author: Lukas Czaja, Head of Industry Management Machine Tools, igus<br />
Bending device supports large and heavy<br />
workpieces<br />
For bending large or heavy parts, users of the TruBend Series 5 000<br />
have a bending tool on which the sheets to be processed are placed.<br />
This supports up to 30-degree angles and can be automatically<br />
adjusted in height. “For large and very heavy workpieces, this support<br />
is necessary to bend the sheets accurately, requiring only one<br />
operator,” explains Volkmar Schmidt, Head of Technical Purchasing<br />
at Trumpf Maschinen Austria. The bending device can be moved<br />
freely from left to right.<br />
In order to move the motor, encoder and sensor cables as well as<br />
an earth cable along the machine safely when the bending device is<br />
moved, Trumpf relies on energy chains from igus based in Cologne.<br />
For the TruBend Series 5000 the machine tool manufacturer sources<br />
the chains as enclosed tubes from the R4.1L series, using overlapping<br />
lids instead of the standard crossbars. Just as with the open<br />
E4.1L version, the lids can still be opened at both ends and pivoted<br />
upwards by 115 degrees, which saves assembly time and cost. If<br />
necessary, they can even be removed completely, fitted again and<br />
closed by just pressing down.<br />
The swarf-proof and opaque energy supply system<br />
“We originally developed the e-tubes so that we could offer a swarfproof<br />
version of our e-chains for use in moving applications<br />
exposed to flying metal swarf or other small particles”, explains Elvis<br />
Kaufmann, technical sales consultant for igus Austria and responsible<br />
for Trumpf Maschinen Austria. “The cables inside are therefore<br />
reliably protected and moved.” This is not always required by<br />
Trumpf but the machine tool manufacturer still prefers the closed<br />
18 <strong>WORLD</strong> <strong>OF</strong> <strong>INDUSTRIES</strong> <strong>2018</strong>