sheet width: 3100 mm
plate thickness: 9 mm
pre-bending: 6
mm
diameter of upper rolls: 220 mm
diameter of lower rolls:
200 mm
side roll diameter: 170 mm
min. dia.: 250 mm
roll
speed: 6 m/min
total power requirement: 10,3 kW
weight of the
machine ca.: 4651 kg
dimensions of the machine ca.: 4915 x 1120 x
1235 mm
Features
- Machines include the following DAVI
standard specification:
The components of the machine
structure
(machine stand, frame and swivel bearings, etc.) have
been calculated and
designed to withstand the loads required for
the applications
and performance levels. The robust and
heavy-duty machine construction absorbs
the loads generated
during
the bending process without transferring them to the
foundation.
- High-quality surface finish:
For forming
delicate surfaces and/or soft materials without leaving
marks
Hydraulic-mechanical parallelism system, supported
by
electronics for fine-tuning.
There are two
INDEPENDENT
& SYMMETRICAL hydraulic circuits for the left and right
cylinders
of each roller.
The oil flow is regulated by two DOUBLE PUMPS,
which are mounted on the
same motor shaft and are fully
synchronised.
The two symmetrical hydraulic circuits move the
cylinders and supply
the rollers with the SAME amount of oil in a
fully synchronised manner.
Electronic control is activated only
for extremely precise
fine-tuning.
- Smooth transmission
of the drive
Both the hydraulic motors and the gearboxes (top
and bottom)
can follow the deflection of the roll
without load
when bending narrow sheets.
This ensures perfectly symmetrical
deflection of the rolls under load.
This system also allows the
rollers to deflect freely,
without the risk of breakage under
excessive load.
- ‘Roll-by-Wire’© digital
technology
Since 2004, DAVI has revolutionised the way sheet
metal rollers are wired
(similar to ‘fly-by-wire’ technology
in the aerospace,
FMS and automotive industries) and introduced
‘Roll-by-Wire’ technology.
This allows the entire control
system of the roller to be controlled via digital
signals rather
than, as was previously the case, via numerous relays and
contacts.
Digital technology is much faster and more
reliable.
Action
Benefit
Reduction in the number -> Reduction in
potential
of components component
failures
Very compact design -> Improved
accessibility for
maintenance work
Improved accessibility for -> Damaged
parts can be identified
maintenance work
more easily
More reliable -> Greater
accuracy thanks to the use
of ‘digital signals’
Permanent lubrication
technology
The lever-arm feed system eliminates all linear
friction during the movement
of the side rollers, as the roller
support arms, which house the bushings,
rotate simply and smoothly
around two large, strong pivot points made of alloy
steel,
ensuring precise and friction-free rotation. This guarantees
reduced
wear and safety during unlimited use.
Further
advantages of the lubrication-free lever-arm feed mechanism
are:
•NO daily maintenance required (lower operating
costs).
•More production time available.
•The bearings are
sealed to protect against scale, dust and rust
- Hardened
rollers
•Excellent heat treatment of the induction-hardened
rollers
•A much harder surface than unhardened rollers to reduce
wear and
scratches
•Surface-hardened to between 48–62 HR
Rockwell C, depending on roller size
- Cone production
package
It comprises:
•Electronic,
software-controlled tilting of the side rollers
(return
automatically to the horizontal position)
•Mechanical
counter-tilting of the lower roller to assist the feed of the
cones
(hydraulic counter-tilting available on request)
•Cone
stop (cone shoe) made from hardened chrome steel
alloy
Control:
‘DAVI iRoll®- EXTREME’ CNC Control
with LIVE! 3D machine view
Key features
Programmable axes
Operating system: Windows
-> All axes are programmable
21.5” touch screen
-> Operating mode
Joystick with dead man’s
switch -> Manual
On/Off (S-axis)
Variable
rotational speed -> Automatic via
manual
(S-axis) data input
(MDI)
Customisable widgets -> Flexible
automation
Smartphone-like visualisation ->
Programming options
in high resolution
LIVE! 3D machine view
-> Editor mode: a programme is
written manually
using the keyboard
Live 3D
simulation -> Teach-in mode: rolling
the
sheet metal
and saving
the
movements
Unlimited number of programmes ->
Programming aid for workpieces
with single radii and
multiple radii
Radius correction for shapes with
-> Programming aid for cones
a single radius and multiple
radii
Material properties – ->
Programming aid for
self-learning input system
customised parts
Graphical display of ->
Programming aid for
clamping pressure – optional ->
rolling programmes with multiple
work steps
Production report for
-> Programming aid for
series production
apple shape”
Basic App Fault-Free Machine (FFM)
-> Optional functions
Maintenance alarms
-> Joystick with deadman’s switch
(On/Off) (other
axes)
Special equipment included in the
price:
- Hardened rollers
- Package for conical
production
- DAVI iRoll®- EXTREME” CNC control with LIVE! 3D
machine view
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