How to adjust the focus of the fiber laser cutting machine?
How to adjust the focus of the fiber laser cutting machine? There are three main methods of focal adjustment for fibre laser cutting machines, negative focal length, internal negative focal length and 0 focal length. I believe that many people have played a game as children, that is, using a magnifying glass and the heat of the sun to ignite paper or leaves, we all know that this time must be adjusted to the appropriate focal length to maximize the use of the sun’s energy to ignite the item.
Similarly, when cutting with a fibre laser cutting machine, there is a difference in the quality of the cut depending on the focal length.
Therefore, in order to improve the cutting quality of the fibre laser cutting machine, it is very important to adjust the focal length of the fibre laser cutting machine reasonably.
But how should the focal length of the fiber laser cutting machine be adjusted? Let’s take a look at it: when the focal point of the fibre laser cutting machine is in the best position, the minimum cut, the highest efficiency can obtain the best cutting results. Different laser focal position corresponds to different cutting surface roughness, fiber laser cutting machine cutting quality optimization of the focal position is adjusted from the cutting focal point is located in the case of cutting materials to determine:
1, negative focal length
Negative focal length (cutting focal point is located above the cutting material) is mainly used when cutting high thickness of metal plate. The negative focal length requires a large cutting width for cutting thick plates, which leads to insufficient oxygen delivered by the nozzle and makes the cutting temperature drop and the cutting surface relatively rough, which is not suitable for high-precision precision cutting.
2、Negative focal length
Negative focus (cutting focus is located inside the cutting material) is usually applied to the fiber laser cutting machine in cutting aluminum, aluminum alloy and stainless steel and other materials. According to the focal point principle cutting surface, cutting width relative to the cutting point in the workpiece surface is large, and this mode using fiber laser cutting machine cutting airflow is large, the temperature to be high, cutting perforation time to be slightly longer. So this cutting mode is mainly used in cutting aluminum or stainless steel and other hard materials.
3, 0 focal length
0 focal length (cutting focal point is located on the surface of the cutting material) is usually a focal point positioning method applied when cutting materials such as SS41, SPH, SPC.
0 focal point of cutting is close to the surface of the workpiece, due to the smoothness of the upper and lower cutting surface is not the same, so when cutting the upper surface is relatively smooth, while the lower surface is relatively rough. This way of positioning the cutting focal point needs to be determined according to the process requirements of the upper and lower surfaces in the actual situation. According to the actual situation to determine the focal point position of the fiber laser cutting machine is very important, a reasonable focal point position to maximize the use of laser energy, in order to make the fiber laser cutting machine more reasonable to work. In addition, each laser cutting machine manufacturer’s machine focal length adjustment method are different! The general import can be entered directly into the menu! General carbon steel in about 0 plus or minus 1 about the same! Stainless steel, then according to the thickness of the plate will be negative value of more! The quality of the product focal length is only part of the adjustment!
About the new day laser
Jinan Xintian Technology Co., Ltd. was established in 2004 and is located in the spring city of Jinan. The company is committed to providing the global laser field advanced laser cutting machine, marking machine, welding machine, cleaning machine and supporting automation system and other laser industrial equipment and the whole process service experience, is a collection of research and development, production, sales as one of the professional laser industrial application solutions provider.
Xintian Laser insists on being innovation-oriented and has a R&D team of nearly 100 people, with a 28,000㎡ industrial park base and a 20,000㎡ intelligent equipment centre factory in Jinan. After years of struggle, the market has spread to more than 160 countries and regions around the world, establishing more than 40 service outlets and nearly 100 agents around the world, creating a three-hour rapid response service chain, escorting customers 24 hours a day and providing full life-cycle services for products and customers.