Remote laser welding, also known as scanner welding, is a highly dynamic and economical laser welding technique. It employs large focal lengths to achieve a broad operating range, directing the laser beam via fast-moving deflection mirrors onto the workpiece.
In essence, remote laser welding distinguishes itself through:
- High Speed & Dynamics: The use of rapidly moving mirrors allows for extremely fast beam positioning and welding speeds compared to traditional methods where the entire welding head must be moved.
- Large Working Area: Large focal lengths provide a substantial working area, reducing the need for frequent repositioning of the part or welding system.
- Non-Contact Process: The laser beam is directed from a distance, avoiding physical contact with the workpiece, preventing contamination and wear.
- Flexibility: Enables welding of complex geometries and hard-to-reach areas due to the agile beam manipulation.
- Cost-Effectiveness: Through increased throughput and reduced downtime, remote laser welding can offer significant cost savings in high-volume manufacturing.
Think of it as using mirrors to "paint" the weld onto the part with a laser beam, all while keeping the laser source at a distance. This is in contrast to traditional laser welding, where the laser head moves along the weld path.
Here's a breakdown of the key components and their functions:
| Component | Function |
|---|---|
| Laser Source | Generates the high-energy laser beam. |
| Beam Delivery System | Directs the laser beam, often through fiber optics, to the scanner head. |
| Scanner Head | Contains rapidly moving mirrors to deflect and position the laser beam. |
| Focusing Optics | Focuses the laser beam onto the workpiece to create a small, intense spot. |
| Control System | Controls the laser power, beam position, and other parameters to achieve the desired weld quality. |
Applications:
Remote laser welding is widely used in industries such as:
- Automotive manufacturing (e.g., welding of car body components)
- Electronics (e.g., welding of battery cells)
- Medical device manufacturing
In conclusion, remote laser welding is a sophisticated technique that offers speed, precision, and flexibility, making it an ideal solution for many high-volume manufacturing applications.
