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Where is the focus of a laser cutting machine?-Flora
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2020-08-06
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Where is the focus of the fiber laser cutting machine? How to find the focus of the metal laser cutting machine? Many people have such questions when using laser cutting machines.
Where is the focus of a laser cutting machine?
Where is the focus of the fiber laser cutting machine? How to find the focus of the metal laser cutting machine? Many people have such questions when using laser cutting machines. Laser equipment manufacturers will analyze the following three focus positions for you:
Firstly, the focus is on the surface of the sheet.
This method also becomes 0 focal length. When using, the focus of the cutting machine is close to the surface of the workpiece. In this mode, the upper and lower surfaces of the workpiece are different in smoothness. Generally speaking, the cutting surface close to the focus is relatively smooth, but away from the cutting focus. The lower surface appears rough. We should determine the mode according to the process requirements of the upper and lower surfaces in actual applications.
Secondly, the focus is inside the plate.
This method also becomes a positive focal length. When the workpiece you need to cut is stainless steel or aluminum steel plate, it will use the mode that the cutting point is inside the workpiece. However, a disadvantage of this method is that due to the focus principle. The cutting width is larger than the cutting point on the surface of the workpiece. At the same time, the cutting airflow required in this mode is larger, the temperature is sufficient, and the cutting and piercing time is slightly longer. So when you choose the material of the workpiece is mainly stainless steel or aluminum with high hardness.
Thirdly, focus on the top of the plate.
In this way, we also become a negative focal length if the cutting point locates above the cutting material. This method mainly uses and cuts materials with high thickness. The reason why the focus is above the cutting material in this way is mainly because the thick plate requires a large cutting width. Otherwise the oxygen delivered by the nozzle is very likely to be insufficient and cause the cutting temperature to drop. But one disadvantage of this method is that the cutting surface is relatively rough. It is not practical for cutting with high precision.
In short, the focus position should be different depending on the material to cut.
XT laser is manufacturer of laser marking/engraving/cutting/welding/cleaning machines since 2004, any inquiry, feel free to contact us:
Email: xintian131@xtlaser.com
Skype: XTlaser-Flora
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