PRECITEC Lasermatic LightCutter, Руководство по эксплуатации

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2 Product description
D 159195 © Precitec GmbH & Co. KG • EN 09/2019
2 - 9
2.1.1 Design and functions
The laser head is used for the distance-controlled laser cutting of metals
using fibre-coupled lasers on flat bed machines.
It is precisely worked, rugged, service-friendly and can be adjusted easily.
All media connections are located at the laser head.
The laser head includes capacitive distance sensors that constantly record
the standoff distance between the nozzle
(nozzle electrode)
and the workpiece.
The system electronics analyses the sensor signal that is used to control a
linear drive.
Collimator
The collimator is permanently mounted on the laser head and mainly consist
of a fibre socket and the collimator housing with a water cooling device for the
collimating lens
(f
C
75 / f
C
100 focal length)
.
Water cooling device
All water-conducting parts in the module-integrated cooling system are made
of stainless steel. Fittings with M5 threaded holes for hoses
(ø6 mm external/
ø4 mm internal)
are used for cooling water outflow and inflow.
Laser beam position
The focal position adjustment device is integrated into the collimator.
Two Allen
(socket)
head screws
(size 2)
at the front of the collimator are used
for centring.
The horizontal adjustment range is ±1.5 mm.
Focusing lens
Focusing lenses with focal lengths from
F100
to
F200
can be used.
The maximum clear optical diameter
(clear aperture)
is 24 mm.
Focal position
(adjustment module)
The vertical adjustment range lies between -5 and +3 mm for all focal lengths.
A large indicating dial
(graduation of 0.5 mm)
enables the focal position to be set
using an Allen key
(size 5)
.
Protective window cartridge
The protective window cartridge is located underneath the beam shaping
optics. The protective window
(OG)
is pressure-proof and can withstand
maximum laser head pressure.
Cutting gas
The laser head can be operated at a cutting gas pressure of up to 25 bar
(2.5 MPa)
. The connection
(G1/8)
is located on the left-hand side of the
protective window module
(a module where the connection (G1/8) is on the
right-hand side is also available).
The cutting gas also cools the protective window.
Precitec offers fibre sockets for its high-performance collimators for connecting
conventional fibre optic cables
Collimators OG-COL (straight design)
can also be equipped with a protective
window
(protective window cartridge COL)
which protects the collimating lens from
dust and dirt when the fibre is being installed or removed.
Cutting gas quality in compliance with ISO 8573-1:2010; Solid particles -
Class 2, Water - Class 4, Oil - Class 3 (see
Tab. 8-2 , page 8-65 ). The purer the
cutting gas is the longer the protective window's life will be.