Setting The Focus Point; Safety; General Information; Setting The Focus Point - Overview - Fronius Laser hybride Instructions De Service

Setting the focus point

Safety

Work that is carried out incorrectly can cause serious injury and damage.
Set up work must only be performed by trained and qualified personnel. Observe the safety
regulations in the operating instructions, paying particular attention to the section entitled
"Safety inspection".
General informa- A low-power pilot laser is required for this set up work.
tion
The position of the focus point for the laser beam relative to the workpiece and the end of
the wire electrode of the arcing process can be adjusted in all three Cartesian coordinate
axes.
The focus point needs to be set in all the coordinate axes:
-
-
-
Setting the focus The focus point must be precisely positioned on the surface of the workpiece. To ensure
point - overview that this is so, the laser welding head is slowly raised over a test workpiece and simultane-
ously moved in the feed direction. This continuously rising movement is along a slope that
has previously been programmed in the robot control.
Only the laser is active, not the arcing process.
As the focus point approaches the surface of the workpiece, penetration on the test work-
piece increases rapidly.
Due to the height of the laser welding head above the relatively narrow and easily identifi-
able area of deepest penetration, it is possible to determine the correct setting for the focus
point.
Setting the focus
1
point - prepara-
2
tions
3
WARNING!
after successfully mounting the laser welding head
each time the laser optics are replaced
when programming a new reference point
Switch on the pilot laser
Set the height of the laser welding head so that the point of the laser beam on the
workpiece is at its smallest diameter.
This height is used as a reference line for the slope that is to be programmed.
Program a slope starting at a laser welding head height of -20 mm and ending at +20
mm, measured against the reference line.
To make it as easy as possible to identify the point of deepest penetration, the length
of the slope should be approx. 100 mm.
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