Amada ML-2550A, Operation Manual

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ML-2550A/2551A
2. Mechanism of the YAG Laser
2. Mechanism of the YAG Laser
The YAG Laser for welding consists of a power supply, cooler, oscillator, optical fiber,
output unit, etc. Laser light can be transferred to a place remote from the main unit
by optical fiber, so that only the optical fiber and output unit can be mounted in the
manufacturing line for welding. Multiple beams of laser light can be split from single
laser equipment to multiple optical fibers.
Powersharing
When single laser light is split into multiple beams by using a beamsplitter, multiple
workpieces (or multiple positions of a single workpiece) can be simultaneously
welded. This method is called "powersharing."
Supposing that the energy of a single laser light beam is 100%, 50% laser light is
simultaneously irradiated when the number of deliveries is 2, or 33% laser light is
simultaneously irradiated when the number of deliveries is 3. Up to 4 deliveries are
available for this laser equipment at powersharing.
Timesharing
100% energy is applied to multiple workpieces by changing the reflection angle with
the mirror of the timesharing unit without splitting single laser light. This welding
method for multiple workpieces is called "timesharing."
For example, if when the number of deliveries is 3, laser light is irradiated once each
from 3 optical fibers. Up to 4 deliveries are available for this laser equipment at
timesharing.
Common Laser Equipment Configuration
Example of 3 deliveries
Optical fiber
Output unit
Workpiece
Oscillator
YAG rod
Mirror
Cooler
Beamsplitter
Power supply
Excitation lamp
Power monitor
Input unit