TPT May 2010

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Technology Update
52 M ay 2010 ›
AS a manufacturer of machines for the
processing of tube end work pieces,
particularly for the natural oil and gas
industry, Unitube Technology GmbH has
gained a position in the market as an
independent enterprise since it was first
established.
The processing principle of the
modular machine tool series “Fixed work
piece processed with circulating tools”
guarantees a high degree of productivity
and manufacturing quality.
Flexibility is another essential aspect
of the Unitube machine series. On the
one hand, it addresses the size of the
machine: apart from four standard sizes
(200, 400, 600 and 1,400 depending on
the maximum tube diameter in mm) special
sizes are feasible as well. On the other
hand, the MWZ are flexible when it comes
to ways of processing. It enables various
operations to be performed such as thread
and outline processing (Version G), the
tapping of tube ends or sections (Version
T) and the processing of welding chamfers
(Version F).
Some special features of the modular
machine tool series are: the core element is
a tool holder with individual approach (CNC)
of tool slides. For each and every one of
the maximum six slides (X-axis) a servo
motor introduces a feed movement into the
rotating system of the main spindle (C-axis),
where the tool holder is fixed. The latter is
completely independent from the speed of
the main spindle thanks to a patented drive
system. The feed motor only has to be used
if a tool slide is supposed to move.
A Russian tube factory has been
convinced by these advantages lately.
For the processing of tube ends
according to standards
GOST 632-80/633-80
and API 5B/5CT with a
nominal diameter
between 4½"
(114.3mm) and 9
5/8" (244.5mm), the
Russian customer
ordered a special size, namely die
MWZ 250 G-CNC. The machine produces
both external taper and thread in just one
single processing step. In addition to that,
outlines and seal seat connections are
machinable and even the separation of
tubes can be effected with this machine.
Thanks to the modular concept of the
Unitube Technology GmbH, customers’
special requests can be processed quickly,
individually and according to quality
standards in the future.
Unitube Technology GmbH – Germany
Fax: +49 371 400 2969
Email:
Website:
Tube end working processing
The Unitube machine series