WORKHOLDING, ACCESSORIES, BARFEEDS EFFICIENCY GAINS
THE HEART OF MACHINING
In Ireland, the Irish Manufacturing Research
(IMR) facility in Rathcoole has recently
installed a new Doosan Puma 2600SY II
turning centre with workholding technology
from Hainbuch ( www.is.gd/5WopYk ) at the
heart of the new installation.
IMR was Developed as an independent
applied-research centre to act as a conduit
between academia and industry in 2014, and
borne out of an industry-led initiative that was
initially formed in 2010 to pilot a new
research model in Ireland.
The new Doosan Puma 2600SY II is a 10-
inch chuck multi-tasking lathe with Hainbuch
collet chucks speci ed on both the main and
sub-spindle. To optimise productivity,
exibility and ease of use for the Irish
research centre, Mills CNC ( www.is.gd/
OIjyom ) supplied the machine with a
Hydrafeed servo-driven bar feeder, Filtermist
extraction, Renishaw optical workpiece
inspection probe, an LNS swarf conveyor
system and also an FSE ltration system.
However, it is the Hainbuch collet chucks
that are really taking exibility to a new level
for users of this new installation.
Working in collaboration with Mills CNC,
Hainbuch installed its Spanntop mini quickchange
dead-length chucks on both spindles
of the Doosan machine with an 80mm chuck
on the main spindle and a 52mm system on
the sub-spindle.
The Spanntop mini incorporates a chuck
with a dismountable end-stop plate that
ensures precision workpiece clamping
without the pull-back effect.
The Spanntop mini permits the quick
change-over from outside to inside diameter
clamping or 3-jaw clamping through the
remarkable exibility of the modular system.
When asked about the Hainbuch system,
IMR’s machining applications specialist Chris
Judge said to be able to demonstrate the full
technical capability of the Doosan Puma “you
need to be using the best workholding and
tooling systems available” and he was
delighted to see the Hainbuch system
selected.
CLAMPING FLEXIBILITY
The Spanntop mini is an ideal partner for
turning centres with its innovative design that
signi cantly reduces interference contours
and improves tool accessibility which is ideal
for limited space work envelopes. With a
compact design and a lower mass than
alternate systems, the Spanntop mini
minimises inertia loss when compared to
3-jaw chucks.
The dead-length variant installed on the
Puma machine converts to a fully functional
‘bar chuck’ when the end-stop plate is
removed. Providing workpiece clamping
without axial movement of the clamping head,
the Spanntop mini clamps workpieces with a
short collar or shoulder, even providing part
pick-off without the pull-back effect which is
ideal for this twin-spindle turning centre.
Hainbuch UK supplied the Spanntop mini
complete with machine adaptions, changing
guns and a complement of 10 clamping
heads on each spindle for holding a complete
variety of components.
Hainbuch UK managing director Nick Peter
explains: “We have installed a solution that
provides an unparalleled level of clamping
exibility with secure high-clamping forces for
machining any component or material that is
put on the machine.
“The Spanntop mini is perfect for the
medical industry and we are hoping that
having this system at a leading research
centre will showcase our system in Ireland to
the continually expanding medical market. We
already have a substantial level of enquires
for ‘add-on’ mandrels for the chucks to do
speci c research jobs.”
MAKING A DIFFERENCE
Investment in new accessories can also make
a difference on shop- oors in terms of helping
relieve cramped conditions, and that is the
case at German automotive components
manufacturer ElringKlinger, which has received
a compact RWA 1600 transport cart from
Roemheld ( www.is.gd/HE0bRm ) - whose
subsidiary in Hitchin supplies similar
equipment into the UK market.
Space is particularly limited where two
automated injection moulding machines are
operated over three shifts. They are located in
an enclosure and mould exchange can only be
carried out by entering a comparatively narrow,
low door.
The two machines, which are positioned at
an angle of about 120 degrees to each other,
require a mould change every eight to nine
days. As there is no overhead crane in the
factory, the machines cannot be loaded from
above. Instead, until recently operators used
one of a number of standard transport carts.
Directly in front of one machine there is
hardly any space for manoeuvring a cart,
however, so previously mould change was
challenging and physically exhausting, and the
RWA 1600 cart has transformed the
workspace.
The RWA 1600, is characterised by a
compact design, an electro-hydraulic lifting
platform and a shuttle table equipped with
The Hainbuch Spanntop provides fast
changeovers and fl exibility for IMR
hydraulically actuated ball bars. The cart is
also able to be customised to meet speci c
requirements.
With ball bars set into the support surface
of the table, dies can easily be moved
manually in any direction. A special safety
mechanism ensures that during mould
transportation the ball inserts are lowered
into the table surface so the die is prevented
from moving. Removable front and side bars
provide additional safety.
Roemheld offers three versions of the
1,600 kg-capacity cart with either four, six or
eight ball bars, but ElringKlinger had a special
version with nine bars. It ensures that even
the smallest moulds used by the
manufacturer are securely supported by at
least two bars.
See overleaf for workholding, accesories,
barfeeds news and products
www.machinery.co.uk | MachineryMagazine | @MachineryTweets | February 2021 31
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