How does the laser cutter focus?

The laser power density of laser cutting machine has a great influence on the cutting speed, and the focus position is very important. However, if the cutting head of the optical fiber laser cutting machine you purchased does not have the automatic focusing function, you need to focus manually. The laser cutting machine with automatic focusing function is usually more expensive, so the metal laser cutting machine with automatic adjustment function has no focusing problem in the laser cutting machine. What we are discussing here is how to determine the focusing position of the laser cutting machine without the automatic focusing machine function.

How does the laser cutter focus?

How to determine the focus position of laser cutting machine

The spot size after the laser beam is focused is proportional to the focal length of the lens. There are three simple ways to identify cutting priorities in the industrial sector:

1. Printing method: move the cutting head up and down, and print on the plastic plate with the laser beam, focusing on the smallest printing diameter.

2. Inclined plate method: pull the plastic plate horizontally at a certain angle with the vertical axis, with the minimum position of the laser beam as the focus.

3. Blue spark method: take down the nozzle, blow air, and then hit the pulse laser on the stainless steel plate to move the cutting head up and down until the blue spark becomes the focus.

At present, many laser cutting machine manufacturers have realized automatic focusing. With automatic focusing function, the processing efficiency of laser cutting machine can be greatly improved. Compared with labor and time cost, laser cutting machine with automatic focusing function is a good choice in terms of cost performance. With the auto focusing function, the perforation time of thick plates can be greatly reduced. When processing workpieces of different materials and thicknesses, the machine can automatically adjust the focus to the most appropriate position, thus saving a lot of unnecessary operations.