3 focus of laser cutting machine
1.Cutting focus is above the material
This way we are also known as the negative focal length, because the cutting point is not located in the surface of the cutting material is not located in the inside of the cutting material, but positioned at the top of the cutting material. This method is mainly used in the material with high cutting thickness. This approach is focused on the cutting material, mainly because of the need to cut a large plate, otherwise the nozzle delivery of oxygen is extremely prone to lead to problems and the resulting cut temperature. But one drawback of this approach is that the cutting surface is rough and less practical for the cutting of high precision.2.Cutting focus is in material
This way is also known as the positive focal length. When you need to cut the workpiece for the stainless steel or aluminum plate when the cutting point in the workpiece inside the model. But one drawback of this approach is that, due to the focus principle of cutting surface, the cutting surface of the workpiece is larger than the cutting point at the same time, and this mode requires the cutting gas flow to be large, the temperature should be sufficient, and the time of cutting is slightly longer. So when you choose the material of the workpiece is mainly for stainless steel or aluminum lamp of the material selection of high hardness.3.Cutting focus is on surface of material
This method is also known as the 0 focal length, usually in the SPC, SPH, SS41 and other parts of the cutting, the use of the cutting machine is used to focus on the workpiece surface, which is not the same as the upper and lower surface of the workpiece surface smooth, generally close to the focus of the cutting surface is relatively smooth, and far from the cutting of the lower surface is rough. This model should be based on the actual application of the upper and lower surface of the process requirements and set.To sum up, we should use different focus mode when cutting different material or parts, can more play the performance advantages of laser cutting machine.
