FIVE-AXIS MACHINING SUPPLEMENT
XXXXX
September 2020 | www.machinery.co.uk | MachineryMagazine | @MachineryTweets
LATEST PRODUCT NEWS
46
component. The models offer the longest Z-axis stroke
and largest swivel range on the market for rotary axis
machines. The linear guidance system of the reference
axis can be optionally equipped with a temperaturecontrolled
cooling function, and a wide-opening work
area door ensures safe access and ergonomic working,
with maximum machine safety. Plus, large safety glass
provides a perfect view of the machining process. The
Access Series is compatible with Siemens and
Heidenhain control systems.
Leadwell BC-600 adds to
existing range, offering
smallest working envelope in
the series
Taiwanese machine tool builder Leadwell CNC
Machines has introduced a new model, BC-600, at the
smaller capacity end of its of BC-series of 5-axis
machining centres. On all four models in the range, the
rotary axes are provided by a ±110° B-axis spindle and
an integrated C-axis rotary table, both of which may be
interpolated with X, Y and Z to allow full 5-axis
production.
The competitively priced, highly speci ed machines,
which are tted with scales in the linear and rotary axes
as standard, are available in the UK and Ireland through
recently appointed sole sales and service agent
WH-Lead ( www.is.gd/tahinu ).
A notable feature of the 12-tonne BC-600 is its
generous working envelope for the nominal 4.7 by 3.8 m
footprint. Travels in X and Y are 1,100 mm and 610 mm
respectively, while in the Z-axis components 610 mm tall
can be machined with the spindle in the vertical
orientation, rising to 790 mm with the spindle
horizontally positioned. Cutting feed rate is up to 10 m/
min, while rapids are 36 m/min in X and Y, 30 m/min
in Z for short idle times and high productivity.
The ush, 600 mm diameter rotary table accepts
workpieces weighing up to 400 kg, but the full 1,280 by
610 mm xed table is able to accommodate 1,400 kg
components for 3- or 4-axis machining. The C-axis uses
a direct-drive motor to provide high torque and rigidity
and to avoid the backlash normally associated with
worm gear drives. Maximum standard rotational speed
of the C-axis table is 120 rpm but there is an optional
800 rpm version to provide turning capability.
The tilting spindle, which can be positioned to within
20 seconds of arc, is driven at up to 15,000 rpm
(optionally 10,000 or 12,000 rpm) by an 18.5 kW motor.
It is replenished automatically with 40-taper or HSK-T63
cutters from a 40-station tool magazine. The spindle’s
rigidity, coupled with the wide machine column and base
and the use of linear roller guideways in the orthogonal
axes with dual-nut, 40 mm diameter ballscrews in X and
Y, allows for rigorous machining duty.
Controls are Heidenhain TNC640 with a DCM
function to minimise the risk of a collision during 5-axis
cycles and KinematicsOpt geometry error compensation;
Siemens 840D with either full 5-axis or 4+1
interpolation; or FANUC 0MiF, available with 4+1
capability only.
Two more 5-axis models added
to Doosan DVF range
Mills CNC (www.is.gd/ugoyob) has added the DVF
6500 (650 mm diameter table) and the larger capacity
DVF 8000 (800 mm diameter table) units to the
existing Doosan DVF 5000
machine
successfully
launched in the
UK and Ireland
some 18 months
ago.
Both machines
are compact and
have a rigid and
stable structure
for increased
accuracies,
improved surface
nishes and greater process reliability. They are also
fast, boasting 45 m/min rapid rates, and are equipped
with oil-cooled, directly driven BT40 spindles (up to
22 kW/18,000 rpm).
The machines also feature servo-driven automatic
toolchangers (up to 120 tools) with a 1.3 second tool-totool
changeover time, roller LM guideways that deliver
increased speed, accuracy and reliability, and directdrive
rotary tilting tables (A-axis is +120/-120°; C-axis is
360°). Thermal compensation systems (spindle and
structure) and a long-life, grease lubrication system are
other machine features.
FANUC 31iB5, Heidenhain TNC640 or Siemens 840D
with ShopMill software can be tted, while a Collision
Protection System can also be supplied as an option.
Both machines can also be supplied with a range of
different automation solutions that increase their
productivity and enable manufacturers to take
advantage of unattended and lights-out operations.
The DVF 6500 offers 750 by 785 by 600 mm in X, Y
and Z with a table load of 1,000 kg, while the DVF
8000’s equivalent gures are 1,000 by 900 by 685 mm
and 1,400 kg.
A further variation is that a DVF 8000T model has a
turning capability, although the machine then has a
lighter maximum table load of 700 kg and faster C-axis
speed of 600 rpm.
SUPPLEMENTFIVE-The BC-600 is
at the smaller
capacity end of
Leadwell CNC
Machines’ BCseries
of 5-axis
machining
centres
/www.machinery.co.uk
/tahinu
/ugoyob)