How to determine the focus position of the laser cutting machine?

How to determine the focal position of the laser cutting machine in industrial production, summarized three simple methods.

Printing method: The cutting head is moved from top to bottom, and laser beam printing is performed on the plastic plate, focusing on the place where the printing diameter is small.

Inclined plate method: Use a plastic plate placed obliquely at an angle relative to the vertical axis to stretch horizontally, and focus on a small place with the laser beam.

Blue spark method: remove the nozzle, blow out the air, irradiate the pulse laser on the stainless steel plate, move the cutting head from top to bottom, until the blue spark is large.

The above summary analysis shows that the focus position of the laser cutting machine should usually be on the surface of the workpiece or slightly below, but the requirements for different materials are different. When cutting carbon steel, when the focus is on the surface of the sheet, the cutting quality is good; when cutting stainless steel, the focus should be the thickness of the sheet About 1/2 of it.

The cutting head of the fiber cleaver is a laser output device, which is composed of a nozzle, a focus lens and a focus tracking system. The cutting head of the laser cutting machine moves according to the set cutting track, but the height of the laser cutting head needs to be adjusted and controlled according to the material, thickness, and cutting method.

Fiber laser is the core component of fiber laser cutting machine, and it is also the "power source" for fiber laser cutting machine to realize cutting operation. Compared with other types of lasers, fiber lasers have the advantages of high efficiency, long life, less maintenance, and low cost.

The gas supply system of fiber laser cutting machine mainly includes gas source, filter device and pipeline. Among them, there are two types of gas sources: bottled gas and compressed air. When the fiber cleaver performs cutting, first place the workpiece on the bed, and control the movement of the z-axis through the servo motor to drive the beam. The user can adjust the parameters as needed.