optical fiberThe laser cutting machine has high cutting precision and smooth cutting sectionSmall thermal deformationand many other advantages, are closely related to its focus control. Focus control is me.The focus they say. Early laser cutting applications mainly rely on manual focusing, with the development of laser technology, automatic focusing function gradually replace the manual focusing way, thenoptical fiberHow to adjust the focus position of the laser cutting machine? The following is a detailed explanation for everyone.

High-quality, high-precision cutting is related to the diameter of the lens and the material to be cut, so it is also important to control the position of the focus and the surface of the material to be cut. The cutting focus needs to be adjusted accordingly due to different materials and requirements.optical fiberLaser cutting machine focus position can be divided into the following three aspects:   

  positive focal length ：That is, the cutting focus is inside the workpiece. When the workpiece to be cut is stainless steel or aluminum steel plate, the mode of cutting point in the workpiece is often used. In this mode, since the focus is far away from the cutting surface, the cutting width is relatively larger than that of the cutting point on the surface of the workpiece. At the same time, the required cutting air flow is larger, the temperature is sufficient, and the cutting perforation time is slightly longer. Therefore, the workpiece material is selected for materials with high hardness such as stainless steel or aluminum. 

negative focal length：That is, the cutting focus is on the workpiece. The reason why the focus is positioned above the cutting material is mainly because the thick plate requires a large cutting width, and the nozzle is prone to insufficient oxygen delivery, which leads to a drop in cutting temperature. The disadvantage of this mode is that the cutting surface is rough, which is not suitable for high precision cutting.

0focal length：That is, the cutting focus is on the surface of the workpiece. The smoothness of the upper and lower surfaces of the workpiece is different. Generally, the cutting surface close to the focus is relatively smooth, while the lower surface away from the cutting focus is rough. This mode needs to be determined according to the process requirements of the upper surface and the lower surface in the actual application. 

 The above is the more common laser cutting machine focus position adjustment method, it is recommended that we according to the actual situation to determine the focus position of the laser cutting machine, so as to make the laser cutting machine more reasonable work.ZhizhuanLaser as a domesticCuttingOne of the equipment brand manufacturers,10Years of laser technology accumulation, advanced mechanical design concept, to provide professional product consulting, ordering services.Zhizhuanlaser, worthy of your trust in the laser brand!