How to control the focus position of the laser cutting machine

At present, there are more and more laser cutting machines on the market. However, when using it, do you know how to control the focus position of the laser cutting machine? In order to use the laser cutting machine, the first step is to find the cutting focus position. I believe this is a topic that everyone is very concerned about. Let the experts explain in detail how to determine and control the focus position of the laser cutting machine.

There are three main methods for determining and controlling the focus position of a laser cutting machine in industrial production:

Printing method

First, the cutting head of the united laser cutting machine should be printed on the plastic plate from top to bottom with the laser beam printed. The focus is on printing the one with the smallest diameter.

Oblique plate method

The cutting head of the laser cutting machine should be at the same vertical angle as the diagonally placed plastic plate, and horizontally pulled, the focus of which is the one at the smallest point of the laser beam.

3. Color spark method

To remove the nozzle of the laser cutter, then blow in the air, and let the cutting head hit the stainless steel plate from top to bottom, the focus is when the blue spark is at its maximum.

In order to solve the change of the spot size of the cutting machine of the flying optical path due to the change of the beam size before focusing, the unity provides some special devices for consumers to choose:

Parallel light pipe

As long as a parallel light pipe is installed at the output end of the CO2 laser, the beam can be expanded, and the diameter of the beam is enlarged after the collimator is used, the angle of the divergence angle is reduced, and the beam size is adjusted before the near end and the far end. Consistent in the cutting process.

2. Move the lens lower shaft

An independent movable lens lower shaft is mounted on the cutting head of the cutting machine. It allows the proximal and distal focusing beams to move simultaneously while the machine table moves or the optical axis moves, and the spot diameter remains the same after the beam is focused.å’‹ Processing.

It is very important to determine and control the focus position of the laser cutting machine, so in the use of laser cutting machine, we must first find the focus position of the cutting machine, which is related to the quality of the work.