FZ32 - Portal Milling Machine - galika

CNC Portal Milling Machine
FZ 32
High Performance
Milling Technology

FZ 32
HSC Portal Milling Machine
with Overhead Gantry
with upper moving portal – high
axial accelerations and perfect
surface finishes can be achieved,
resulting in an overall economic
solution.
Low
moving masses
High
structural stiffness
High dynamic and
surface quality
The highly dynamic portal milling
machine of the second generation,
for sophisticated applications
in the aircraft industry and in
automotive development. Well
balanced technology tailored
specifically to accuracy, thermal
stability and rigidity requirements
for composite and aluminium
machining.
acceleration values. It has been
designed to meet customer needs
for the highest cost effectiveness,
dependable accuracy and high
dynamics.
Using the latest FEM simulation
techniques it has been possible
to create a machine with the
greatest possible stiffness which
at the same time has low
moving masses. With this advanced
machining concept –
based on the Zimmermann
overhead gantry technology
The side walls form an integral
part of the machine housing.
Windows on the left or right
side – whichever the customer
prefers – offer a good view of the
working area. Loading and unloading
is carried out through
a sliding door at the face side.
The FZ 32 is designed for
dynamic speed 5-sided
machining of aluminium
and composite materials as
well as for simultaneous
finishing of steel with high
Dust-proof bellows.
Vertical slide / Z-RAM
2-axis milling head VH 2.
Heavy duty machine table with
sheet covers on all sides.
Lamella bellows
for the drive systems.
Overhead gantry moving in X-direction.
Fixed side wall, filled with
special concrete.
Integrated safety guarding.
Encapsulated tool changer
outside the machining area,
pickup or chain design magazine.
2 CNC Portal Milling Machine FZ 32

VH 2 –
The Compact
Wherever low interference contours
and reduced moving masses
are required, the extremely
powerful VH 2 comes into its own.
Maximum working areas
A particular specialty of the
Zimmermann portal milling machine
is the mastery of very large
working areas due to its optimal
structural rigidity.
Particularly with very long Z- and /
or Y-axes, the mass of the milling
head plays an important role
in milling accuracy. Above all,
deflection and torsion must be
kept to a minimum in order to
achieve the best possible surface
finish and contour
accuracy.
Where large working areas are
required but hardly any heavy
materials are to be machined or
high machining speeds are
needed, the weight optimized
VH 2 milling head is an ideal
solution.
Complicated contours
Portal milling machines are
being used to machine increasingly
complex workpieces with
tight contours. Often intricate
clamping fixtures are needed
which restrict access during the
milling process. With its compact
design the VH 2 is often ideal for
working efficiently in this limited
space.
Lightweight machines
The VH 2 is particularly suitable
for medium-volume machining of
lightweight materials up to aluminium
and for finish machining
of steel and cast iron.
A new design
■ Low interference
contour for better access.
■ Water-cooled worm drive
and spindle flange for higher
accuracy and to eliminate
thermal influences.
■ Higher swivel speeds
to reduce overall machining
times.
■ Clamping of rotary axes
for greater stiffness during roughing.
■ Robust, reliable grease
replenishment system to ensure
long life and profitability.
Applications
The VH 2 is basically an allrounder
and thus offers great
advantages as to order flexibility.
However, it really comes into
its own where high power combined
with low weight and / or
compact size is required.
Very large working areas and
complicated workpieces –
such as in the design field and
in aircraft manufacture – are the
applications the VH 2 is often at
its best.
3

FZ 32
Technical Specification
Design
The portal design with fixed
machine bed and a gantry that
travels in the X direction offers
significant advantages for tool,
mould and pattern making as
well as for the aircraft industry.
The cast-iron machine bed is
permanently anchored to the
foundation, so that the workpiece
does not have to be moved.
In this way, machining operations
are independant of the weight of
the workpiece. The moving mass
is made up of the structurally
stiff gantry, the transverse and
Z-slides, and the milling head.
The constant moving masses
ensure highly consistent dynamic
behaviour – a prerequisite for
optimum surface finish and workpiece
accuracy. This combination
of high stability and stiffness,
constant moving masses, and a
highly dynamic drive make the
machine suitable for machining
of several types of materials,
for example plastics, aluminium,
kirksite and fibre-reinforced
composite materials. When machining
composites, the drives
are characterised by very smooth
running.
The 2-axis milling head VH 2.
Machine Frame and Slides
The machine bed is made of cast
iron; the side walls, gantry and
Z-slide are of welded steel construction.
The side walls are filled
with a special, fibre-reinforced
DemTec ® concrete. The guide,
drive and measuring systems for
the Y- and Z-axes are protected
against contamination by dustproof
bellows. The X-axis is fitted
as standard with aluminium lamella
bellows.
4 CNC Portal Milling Machine FZ 32

30
25
20
15
10
5
Z
X
Y
The FZ 32 always
has as standard
three driven linear
axes (X, Y, Z).
▼ Tool changer with chain.
▼▼ Rack and pinion drive.
C
A
On the 5-axis
machine, the
milling head can
also be swivelled
two axes (A, C),
both driven.
Drive System
Independent of the supplier of
the control system, all axes are
equipped with Siemens “Simodrive”
digital drives. The power
transmission is carried out by means
of a rack and pinion drive
with electronically preloaded
motors in all three linear axes X, Y
and Z.
The control-system gantry function
ensures that the two X-axis drives
are synchronised.
■ Linear guides:
Pre-loaded circulating-roller
linear bearings, size 55 on the
X-axis, and size 45 on the Y- and
Z-axis. Up to 8 bearing carriages
per axis.
■ Rack and pinion:
Rack and pinion, quality level 5
with two electronically preloaded
motors per drive unit in the
X- and Y-axis one unit for backlash-free
motion and drive in the
Z-axis.
Measuring systems
The three linear axes, X, Y and
Z, are equipped with direct
length measuring systems with
▼ Comparison of different structural
materials for the side walls based on the
most important functional criteria.
DemTec ® Castings Steel
Heidenhain glass-scales (steel
meters / for axes with over 3 m
travel).
The measuring systems are protected
against dirt and dust by a
compressed air barrier.
Milling spindle
The milling spindle can be
supplied with a power of 45 kW
whereas the speed of rotation is
25 000 min -1 (optional 30 000 min -1
with oil-air-lubrication). In both
cases, the spindle is supported in
preloaded, ceramic, hybrid
spindle bearings. The bearings
have labyrinth seals with a
compressed air protection. To
minimise downtime in the event
of damage, the spindle cartridge
can be changed very quickly
and easily. As an innovation the
spindle is equipped with a
permanent lubrication with
automated grease replenishment
system.
This enables higher speeds and
above all a longer life.
Controls
The FZ 32 has been designed
so that it can be combined with
various makes and types of
control. Modern control systems
provide functions such as
“Look ahead”, jerk limitation,
spline interpolation, and 5-axis
machining. Equipment and
software solutions for many additional
tasks are available as an
option.
0
Damping Rigidity Thermal
conductivity
Thermal accumulation
capacity
5

FZ 32
Technical Data
Machine FZ 32
Working ranges
X-axis 2 000 – 40 000 mm 1
Y-axis 3 000 – 4 000 mm 1
Z-axis 1 250 – 1 500 mm 1
Worktable size
Length
2 000 – 40 000 mm
Width
3 000 mm
Height
350 mm
Max. worktable load 20 000 kg/m 2
T-slots (longitudinal)
18 H12
Distance T-slots
250 mm
Feed drives
Feed drive X, Y and Z-axes up to 50 000 mm/min.
Acceleration of linear axes 2,5 – 3,5 m/s 2
Accuracy 2
Positioning accuracy X-axis
Positioning accuracy Y-, Z-axis
Repeatability X-axis
Repeatability Y-, Z-axis
0,030 mm
0,020 mm
0,015 mm
0,010 mm
Milling head VH 2
Swivel ranges
A-axis + 95°/ - 125° or ± 110°
C-axis (Z = 1250 mm/Z=1500mm) ± 300° / ± 360°
Performance
Torque A-, C-axis
800 Nm
Acceleration A-, C-axis 300°/s 2
Feed rates A-, C-axis
60°/s perm., 90°/s max.
Accuracy 2
Positioning accuracy A, C-axis 15“=0,0041°
Repeatability A, C-axis 10“=0,0027°
Axes clamping
Clamping A-axis
Clamping C-axis
Torque A-, C-axis
hydraulic
spring clamp
1 600 Nm
Milling spindle
Universal
Power S1 max. (100 % ED) 45 kW
Max. torque S1 (100 % ED) 67 Nm
Max. speed
Permanent greasing 25 000 min -1
Oil-air lubrication 30 000 min -1
Constant power range from 6 400 min -1
Tool holder
Distance swivel axis – spindle nose
Tool clamping
Tool unclamping
Lubrication
HSK 63 A
320 mm
Spring clamp
hydraulic
Perm. grease lubrication + automatic
grease replenishment
system (opt. oil-air lubrication)
1 Other dimension on request
2 According to VDI / DGQ 3441
Subject to technical changes
6 CNC Portal Milling Machine FZ 32

VH 2 Milling spindle performance diagrams
Permanent greasing
Md [Nm]
200
150
100
67
50
0
0
Oil-air lubrication
Md [Nm]
200
150
100
67
50
0
0
45 kW
Torque Md Power P
P [kW]
70
60
67 Nm
30
20
10
0
6400 15000 20000 25000 30000 35000
n [min -1 ]
45 kW
67 Nm
30
20
10
0
6400 15000 20000 25000 30000 35000
n [min -1 ]
45
Torque Md Power P
P [kW]
70
60
45
Dimensions
X-axis approx. 2 000 – 40 000 mm
Y-axis approx. 3 000 mm
Height approx. 4 550 – 5 050 mm
Z-axis 1 250 – 1 500 mm
Worktable length 2 000 – 40 000 mm
Width 5 500
Worktable width
3 000 mm
Length approx. 4 500 – 42 500 mm
All dimensions shown are examples of the FZ 32 in the minimum
and maximum configurations. Special variations within this
range are also possible.
Options FZ 32
Air-conditioned control cabinet ■
Safety guarding
■
Simultaneous A-axis
■
Simultaneous C-axis
■
Coolant system
■
Minimal quantity lubrication
■
Measuring touch probe
■
(wireless, cable)
Options FZ 32
Tool changer 15, 30, 50, 80 positions ■
Tool measuring (laser, tactile)
■
Special painting
■
Chip conveyer
■
Extraction system
■
Partitioned working area
■
Clamping A- / C-Achse
■
■ Standard ■ Option
7

High Performance
Milling Technology
FZ 50
FZ 42
FZ 38
FZ 37
Zimmermann is synonymous
with CNC portal milling machines
on a big scale. Specialisation and
our high rate of innovation has
put our technology out in front
worldwide.
A uniquely wide and finely tuned
programme, including a large
number of different machines
and milling heads, enables you to
choose the perfect machine for
every application, thus offering
you the ideal solution with regard
to quality and cost-effectiveness.
FZ 35
FZ 32
FZ 30
FZ 25
FZ 15
F. Zimmermann GmbH
Goethestraße 23 – 27
D-73770 Denkendorf, Germany
Phone +49 (7 11) 93 49 35 - 0
Fax +49 (7 11) 934935-300
info@f-zimmermann.com
www.f-zimmermann.com
Apollo 11 08.07