Nowadays, the advanced welding technology is laser welding. The laser welding machine uses high-energy laser pulses to locally heat the material in a small area. The energy radiated by the laser guides the internal diffusion of the material through heat transfer, and melts the material to form a specific molten pool. It is a new type of welding method, mainly for the welding of thin-walled materials and precision parts, which can realize spot welding, lap welding, seal welding, etc., with high depth width ratio, small weld width, small heat affected zone, fast welding speed, beautiful appearance, no treatment or simple treatment after welding, small focus light points, high positioning accuracy, easy to realize automation.
Which weldable processes laser welding machine have?
1. Manual Welding
Small workpieces usually use manual workstations to perform welding work, such as welding jewelry or repair tools.
2. Application
Sometimes, the laser beam only needs to weld along a single moving axis. Such as using seam welding machine or pipe welding system for pipe welding or seam welding.
3. Systems and Robots
Laser beams are usually connected to three-dimensional parts characterized by three-dimensional welding geometry. It adopts a five axis coordinate based laser unit and a set of movable optical accessories.
4. Scanning Galvanometer Or Remote Welding
The scanning galvanometer guides the laser beam at a long distance from the workpiece, while in other welding methods, the optical lens guides the laser beam at a close distance from the workpiece.
Scanning galvanometer relies on one or two movable mirrors to quickly locate the laser beam, so that the time required to reset the beam between welds is close to 0, so as to improve the production capacity. It is suitable for producing a large number of short welds, and can optimize the welding sequence to ensure the minimum heat input and distortion.
5. Remote Welding System
There are two ways to realize the remote welding system. The first is a remote welding system. The workpiece is placed in the working area under the scanning optical galvanometer and then welded. When a large number of parts are welded in a short time, the parts are transported continuously through the machine under the optical galvanometer. This process is called flight welding.
The second is that the robot carrying the scanning optical galvanometer performs a large amount of movement. At the same time, the scanning optical galvanometer ensures the precise positioning of the laser beam when it moves back and forth along the workpiece. The machine controls the overlapping movement of the synchronous robot and the scanning optical lens. It measures the precise spatial position of the robot within a few millimeters, and the control system compares the measured position with the program path. If the deviation is detected, it will be compensated and controlled by scanning the optical galvanometer.
