Trumpf LASERCELL 1005, Operator'S Manual

Page: 471 / 645

5-58
Adjustment work on the welding head
B337EN05.DOC
The focus position is determined twice, once at maximum laser
output and once with minimum laser output. The control system
calculates the Power-dependent focus shift from the difference
between the two values which have been determined. First the
focus position offset is determined at maximum laser output.
Prerequisite
•
Fine search is applied at the system with power-dependent
focus shift.
•
Welding head is completely mounted and selected.
•
The beam is centered.
•
Approximate search and results check have been carried out.
•
Nominal dimension at the welding nozzle is corrected.
•
Nozzle distance 15 mm.
•
General welding table 1111: Welding focus position = 0.0 mm
parameter and associated AutoLas Plus characteristic curve
have been entered.
•
For focus search with maximum laser output: The laser output
has been programmed at 100% (H10=10000 for calibration
point S0=4) in the UP program COSTUMER_G820_TABLE.
•
For focus search with minimum laser output: The laser output
has been programmed simultaneously (e.g. H10=5500 for
calibration point S0=4) in the UP program
COSTUMER
9
_G820_TABLE.
Additional equipment, tools, material
•
A flat, oil-free, 4 mm thick sheet, 600 mm x 150 mm, St37.
•
Slip gauge 15 mm.
•
Utility program CP_FOCUS_WELD.
Note
The sheet must lie completely flat on the support and is not
permitted to warp during the welding sequence (the sheet should
possibly be tightened).
The focus position is first determined at maximum laser output for
f=0, then at minimum laser output.
1. Select >Operation >Set-up >MDA.
2. Enter B0 C0.
3. Press Start.
The B and C axes travel to 0°.
4. Position the welding head 15 mm over a flat sheet. Use a
gauge block to check.
8
Valid only for machines with laser output of 5000 W or greater.
9
Minimum laser output for welding, dependent on the laser output.
Starting fine search with
power-dependent focus shift
8
Starting fine search with
maximum laser output