TPT November 2011

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64 November 2011 ›
Technology Update
Tungsten carbide
insert for outside
tube scarfing
HSS-DMo5 saw blades
& friction circular
saw blades
CON.T.R.A.S.T.
Impeder core for
high frequency
welding of tubes
Fiberglass pipes
for impeder
core
CON.T.R.A.S.T.
30026 PORTOGRUARO - Italy - Via Umbria, 15
Tel. ++39.0421.271699 Fax ++39.0421.770571
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Rotary table with large through-hole
A SERVO motor-driven NC rotary table
with a very large through-hole has been
introduced by Kitagawa to facilitate
accurate milling and drilling of tube- and
shaft-type components on machining
centres and manual mills. The unit,
designated TG530, is available in the
UK from 1st Machine Tool Accessories
(1st MTA).
The 345mm diameter hole through
the centre has been sized to accept
pipe up to 340mm (133/8"), which is a
standard used in the oil and gas industry
for applications such as borehole casing.
The mechanical structure of the
TG530 is designed to withstand the heavy
cutting torques (up to 2,600Nm) required
to machine tough materials used for
some aerospace components. Hydraulic
clamping torque is high at 6,100Nm, to
allow heavy static machining.
Of rigid build for top machining
accuracy, the unit weighs 366kg, one-
third less than the equivalent model in
the Kitagawa TR table series, which has
a through-hole only half as large. Lower
rotary table weight means that heavier
components can be machined without
exceeding the maximum table load of
the machine tool.
Centre height is 310mm, maximum
rotational speed is 11.1rev/min using a
gear reduction ratio of 1/180, and indexing
accuracy and repeatability are 20 and 4
seconds of arc respectively. The unit can
be mounted vertically or horizontally, with
maximum permissible component weight
being 350 and 700kg respectively.
1st MTA is a supplier of workholding
and machining accessories, including
collets; chuck jaws; Kitagawa, Bison
and Talleras de Guernica chucks, rotary
tables and vices; Chick and Tecnomors
workholding equipment; Abbott and
Leave fixturing and clamping products;
Darex tool sharpeners; OK-Vises;
Brighetti reduction bushes; CoolJet high
pressure coolant systems; Micromag
filtration units; machine mounts; and
Overbeck de-burring twister lathes.
1st MTA’s extensive stock holding
is backed by warranty and service
provided by a dedicated team of
technical engineers. Demonstrations of
selected products are available from
external sales specialists on request.
1st Machine Tool Accessories Ltd
– UK
Fax: +44 1725 512529
Email:
Website:
The new Kitagawa
TG530 NC rotary
table from 1st MTA