Setting The Focus Point In The Z-Axis - Fronius Laser hybride Instructions De Service

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Setting the focus
point in the z-axis
Set the laser welding head torch position to 5° forwards.
If the "5° forwards" position is not complied with, the optical fibre will be seriously damaged,
as the laser will be reflected directly into the laser optics.
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There is a risk of injury when the laser is active.
The protection rules when determining the focus point are the same as those relevant to
LaserHybrid welding (e.g. use a regulation filter element for laser protection class 4 to pro-
tect your eyes, etc.). Observe and follow the safety rules given in these operating instruc-
tions.
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IMPORTANT! When setting the stick-out on the welding torch, do not change the position
of the laser welding head.
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82
z
- 20 mm
Smallest focus of the pilot laser
(does not correspond to the focus of the welding laser)
Reference line
Focus of the welding laser
(= point of deepest penetration on the workpiece)
Switch off the MIG/MAG power source
NOTE!
Clamp a test workpiece with a sheet thickness of approx 2 mm
Set the adjustment ring on the laser optics to "0"
WARNING!
Set the laser power to 3 kW
Move down the previously programmed slope at a travel speed of 2 m/min
If penetration at the test workpiece suddenly increases, stop the robot and the laser
Set a stick-out of 14 mm on the welding torch
Set the laser welding head in the z-axis so that the wire electrode just touches the sur-
face of the workpiece
Save the measured height of the laser welding head as the z-coordinate of the refer-
ence point for the robot
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100 mm
+ 20 mm
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y
v = 2 m/min