As we all know, laser cutting machine has incomparable advantages in the metal processing industry. Not only the cutting accuracy is high, but also the section is smooth and free of burrs. Whether it is cutting thick plates or thin plates, it can achieve the effect that customers want. Moreover, the cutting effect is closely related to the focusing control of the laser cutting machine. In order to obtain better cutting effect when cutting thick plates, as a result, the focus of the laser beam will be set at different positions.
In the early application of laser cutting, the main way of focusing is to rely on manual. Now, with the development of laser technology, this manual focusing method has been gradually eliminated, and the automatic focusing function is gradually realized,
For example, Chuyu Laser's laser cutting machine can be equipped with a fully automatic focusing function. Then, someone will say that the light path is integrated in the cutting head. Can't the focus function be realized by changing the height of the cutting head? When the cutting head is raised, the focus position will be high, while when the cutting head is lowered, the focus position will be low. However, it turns out that this is not as simple as you think.
What are the advantages of the auto zoom laser head?
How to focus the laser cutting machine?
The bottom of the laser cutting head is the nozzle. During the cutting process, the distance between the nozzle and the workpiece (nozzle height) is about 0.5-1.5mm, which can be considered as a fixed value, that is, the nozzle height remains unchanged, so the focus cutting head cannot be adjusted by lifting it (otherwise, the cutting process cannot be completed).
The focal length of the focusing mirror cannot be changed, so we cannot expect to focus by changing the focal length. If you change the position of the focus lens, you can change the focus position: if you lower the focus lens, the focus will decrease; if you raise the focus lens, the focus will increase- This is really a way to concentrate. The motor is used to drive the focusing mirror to move up and down to achieve automatic focusing.
Another method of automatic focusing is to set a variable curvature mirror (or adjustable mirror) before the beam enters the focusing mirror. By changing the curvature of the mirror and the divergence angle of the reflected beam, the focus position can be changed.
With the auto focus function, the machine can automatically adjust the focus to the most appropriate position when processing workpieces of different materials and thicknesses. In this way, the processing efficiency of the laser cutting machine can be greatly improved, and the perforation time of thick plates can be greatly reduced. Therefore, for laser cutting machine, automatic focusing function is an important and indispensable function.
What are the benefits of autofocus?
Before the beam enters the focusing mirror, set the variable curvature mirror (or adjustable mirror) to automatically zoom. By changing the curvature of the mirror and the divergence angle of the reflected beam, the focus position can be changed.
With the auto focus function, the machine can automatically adjust the focus to the most appropriate position when processing workpieces of different materials and thicknesses. In this way, the processing efficiency of the laser cutting machine can be greatly improved, and the perforation time of thick plates can be greatly reduced.
Therefore, for laser cutting machine, automatic focusing function is an important and indispensable function.