TPT March 2015

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Technology News
March 2015 37
Tube and profile cold bending
machine with short set-up times
TUBE production for ships, the chemical
industry or power plant construction
is associated with large quantities.
Central production processes such as
bending the many different tube types
must be effective.
Tube bending machines in these
industries must be flexible and able
to process tube bends in different
nominal diameters and materials in
quick succession. Schwarze-Robitec
marketing manager Jürgen Korte
commented, “If a user has to convert
the machine every time a new tube bend
is to be produced, the total production
would be much too time-consuming and
drawn out. The set-up times therefore
need to be kept to a minimum with the
aid of multiple bending tools.”
The CNC 220 HD MW tube and profile
cold bending machine from Schwarze-
Robitec has been developed to tackle
this task efficiently with one multiple
bending tool, with a measuring system
to ensure accuracy.
It is able to process tubes with
maximum diameter of 219.1 x 12.7mm,
at a tube length of up to 6m.
Despite its size, the 32-tonne plant is
flexible: the multiple bending tool allows
up to 70 per cent of the set-up times of
conventional plants to be saved. It is
possible to process tubes in different
materials, such as steel, copper-nickel-
iron alloys and stainless steel, on one
tool and with no conversion work. At the
same time, thin-walled and thick-walled
tubes with different diameters can be
bent.
Precision is ensured by the integrated
Spring Matic measuring system, which
determines the rebound of the tube after
initial bending.
It is then immediately ‘re-bent’ so that
the bend is executed to accuracy of half
a degree.
“This is an exceptionally precise value
considering the size of the plant and the
tube,” said Mr Korte.
In addition to tube bending machines
and bending tools, Schwarze-Robitec’s
product range includes tube per-
forating machines, measuring stations,
and solutions in the area of special
machinery construction.
Schwarze-Robitec GmbH – Germany
Fax: +49 221 89008 9920
Email:
Website:
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Schwarze-Robitec’s
CNC 220 HD MW tube and
profile cold bending machine