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2018.
Compact Cam 2018.11.
Design
The Power Cylinder starts the piston rod of the Compact Cam
moving when pressurised. The slide is returned by external gas
springs. Two pillars with guideways prevent the tool holder
plate rotating. The clearance in the guides is 0.01 – 0.03 mm.
Applications
The Compact Cam is suitable for hole punching operations
involving no transverse forces. The Compact Cam is gui-
ded and has an internal stop. Punches can be mounted
directly on the tool holder plate.
Side loads on the Compact Cam will lead to
system failure.
In cutting operations with a small cutting clearance and
asymmetrical cutting forces a guide bolster should be provi-
ded, with an external guide to absorb the lateral forces. As
with the Force Cylinder, coupling pins must be used for the
connection between the slide and the external guide
(uncoupling). The Compact Cam is attached by 4 fixing scr-
ews. A feather key groove absorbs the cutting forces. It is
positioned by means of two pilot holes.
Flange Cam 2018.12.
Design
The Flange Cam construction is the same as the construc-
tion of the Compact Cam. The Power Cylinder starts the
piston rod of the Flange Cam moving when pressurised. The
slide is returned by external gas springs. Two pillars with
guideways prevent the tool holder plate rotating. The clea-
rance in the guides is 0.01 – 0.03 mm. The tool holder plate
is supported by a roller and a support plate to absorb lateral
forces.
Applications
The Flange Cam is suitable for work operations with lateral
forces (e.g. bend up, sliding). The Compact Cam is guided
with an integrated stop. Punches can be mounted directly
on the tool holder plate.
A guide bolster with external guide should be pro-
vided for bending operations with asymmetrical
forces.
The Flange Cam is attached by 4 fixing screws. A feather
key groove absorbs the bending forces. It is positioned by
means of two pilot holes.
Alternative drive
For operating the Cam Unit electrically powered Hydraulic
pump units can be used (see page 46). The max. working
pressure must not exceed 150 bar. The max. speeds listed
on page 8 must not be exceeded.
Charging fittings
Nitrogen gas: The Accumulator and Cam Unit can be char-
ged with the gas spring filling charge 2480.00.32.21.
subject to alterations
Flex Cam
Hydraulic system: The system is filled and vented using
the oil filling unit 2018.00.30.
Filling and venting of the system is described in detail in
the user manual supplied with the system.
Hydraulic connection
See also pages 48-53
User-friendly, flexible high-pressure hoses are ideal for the
hydraulic connections (see page 48).
A space-saving alternative is to use system hydraulic
pipes.
The same screwed couplings are used for both hoses and
pipes.
The hose length should not exceed 2000 mm. This is
important to ensure a constant build-up of pressure and –
even more importantly – to minimise impact during cutting
without a significant pressure build-up.
The couplings should be designed for at least 300 bar
nominal pressure and 1000 bar rupture pressure.
This is essential if the connection is to be sufficiently rigid
and for the rupture protection device to operate at 517 bar.
Quick-release couplings for hydraulic
hoses
We recommend that you use quick-release couplings to
join the hydraulic hoses.
Benefits:
• The system can be filled and vented under optimum con-
ditions when off the tool, either at FIBRO or on site.
• If the tool has to be assembled or dismantled, the
hydraulic hose connecting the Power Unit and the Cam
Unit is disconnected using the quick-release coupling.
It is thus not necessary to dismantle the hoses, drain and
refill the oil and vent the system, which keeps costs
down.
For layout purposes, the dimensions of the commonly
used threaded couplings and hoses are shown on pages 48
to 53.
Leaks and oil level display
The experience we have gained in manufacturing gas
springs enables us to select the most suitable seals.
The result is an effective and long-lasting seal.
The connecting line can be assembled with no leaks, using
available materials and with careful installation.
If an oil leak does occur, it will be compensated short term
by the overtravel volume in the Accumulator.
The Accumulator and Power Cylinder are of the same
height, so any loss of oil from the system will be manife-
sted by a difference in height.
7
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