How to accurately control the cutting depth during cold bending laser cutting?
Publish Time: 2025-03-12
Cold bending laser cutting technology has been widely used in the field of metal processing with its high precision, high efficiency and non-contact processing characteristics. However, in actual operation, how to accurately control the cutting depth and speed to ensure processing quality and efficiency is an important issue that technicians need to face.
The key to controlling the cutting depth lies in the laser power, cutting speed and adjustment of the focusing mirror. The size of the laser power directly determines the energy density of the laser beam, which in turn affects the cutting depth. Generally speaking, the higher the laser power, the greater the cutting depth. However, excessive power may also cause the material to overheat, melt or even vaporize, affecting the cutting quality. Therefore, it is necessary to reasonably adjust the laser power according to the type, thickness and cutting requirements of the material.
The cutting speed also has an important influence on the cutting depth. The faster the cutting speed, the shorter the laser beam stays on the material and the shallower the cutting depth. Conversely, the slower the cutting speed, the deeper the cutting depth. However, too slow a cutting speed may cause the material to overheat, produce a heat-affected zone, and affect the quality and strength of the cutting surface. Therefore, the selection of cutting speed needs to comprehensively consider the thermal conductivity of the material, the laser power and the requirements of cutting quality.
The adjustment of the focusing mirror is the key to achieving precise cutting depth. The focusing mirror can focus the laser beam on a very small spot, increase the power density of the laser beam, and thus achieve deeper cutting. The position and focal length of the focusing mirror need to be adjusted according to the thickness of the material and the cutting requirements. Generally speaking, the closer the focus point is to the surface of the material, the shallower the cutting depth; the deeper the focus point is, the deeper the cutting depth is. By accurately adjusting the focusing mirror, precise control of the cutting depth can be achieved.
In the process of cold bending laser cutting, the precise control of cutting speed and depth also needs to consider the deformation of the material and the planning of the cutting path. Since thermal stress is generated during the laser cutting process, the material is deformed. Therefore, the material needs to be preheated before cutting to reduce thermal stress and deformation. At the same time, the planning of the cutting path also needs to consider the deformation of the material to avoid cutting in areas with large deformation.
In addition, modern laser cutting machines are usually equipped with advanced control systems and sensors that can monitor various parameters in the cutting process in real time, such as laser power, cutting speed, and focusing mirror position. Through these data, precise control of cutting depth and speed can be achieved to ensure processing quality and efficiency.
In summary, precise control of cutting depth and speed during cold bending laser cutting requires comprehensive consideration of multiple factors, including laser power, cutting speed, adjustment of focusing mirror, material deformation and cutting path planning. Only through precise control and optimization of these factors can high-quality cold bending laser cutting be achieved.
