In certain cases, the key technology of laser cutting machines is the integration of light and electricity. The performance of the machine tool and CNC system in laser cutting machines directly affects the efficiency and quality of laser cutting. Focal position control technology: One of the advantages of laser cutting is the high energy density of the beam, so the focal spot diameter should be as small as possible to create narrow gaps. The focal spot diameter is also proportional to the focal depth of the lens, and the focal spot diameter is proportional to the focal depth of the lens. Therefore, it is necessary to master and solve the following key technologies: the smaller the focal depth, the smaller the focal spot diameter.

But the laser cutting machine will splash during cutting. If the lens is too close to the workpiece, it is easy to damage the lens. Therefore, in the industrial application of high-power CO2 laser cutting machines, for high-quality cutting, the effective depth of focus is also related to the lens diameter and cutting material.

In principle, the focus of 6mm metal materials is on the surface, 6mm carbon steel is above the surface, and 6mm stainless steel is below the surface. The specific size will be determined by experiments. There are three simple methods to determine the focal point position in industrial production: printing method: the cutting head moves from top to bottom, and laser printing is carried out with the smallest focal point on the plastic plate with the smallest printing diameter.

Blue Spark Method: Remove the nozzle and blow the laser towards the stainless steel plate, causing the cutting head to move from top to bottom until the largest blue spark becomes the focus. For flying optical path cutters, the beam size before focusing varies due to differences in divergence angles and time optical path lengths between the near and far ends.

The larger the incident beam diameter of the laser cutting machine is, the smaller the focus diameter is. The laser cutting machine system provides some special equipment for users to choose: collimator. Adding carbon dioxide to the laser output is a common method of laser beam expansion. The diameter of the expanded beam increases, the divergence angle decreases, and the size of the near and far beams before focusing is basically the same within the cutting range.

Add an independent moving lens lower axis on the cutting head, which is independent of the Z-axis that controls the distance between the nozzle and the material surface. When the machine tool workbench moves or the optical axis moves, the beam will also move from the near end to the far end, keeping the diameter of the entire processing area unchanged after the beam is focused.

Added X and Y directional compensation optical systems to the flying optical path cutting machine. In other words, as the distance at the far end of the cutting increases, the compensation optical path shortens; On the contrary, when the near end optical path decreases, the compensation optical path increases to maintain the same optical path length.

Laser cutting machine cutting and perforation technology: With very few exceptions, any thermal cutting technology can start from the edge of the sheet. Generally speaking, there must be a small hole on the plate. In the past, in laser drilling machines, drilling was done first, and then laser cutting was used. There are two basic methods for laser cutting machines without drilling devices.