What affects the cutting speed of PCB laser cutting machine?

PCB boards are mainly used as important carriers for connecting circuits and electrical appliances. In order to improve production efficiency and good product rate, PCB boards are cut into small finished products during use. Milling cutters, walking cutters, punching, sawing and laser cutting are methods for cutting PCB circuit boards into small boards.

With the development of science and technology, the requirements of PCB circuits are gradually increasing to meet the needs of consumers and the market. He requires that the cutting edge is free of dust, burrs and deformation. It will not affect the edge components and become the mainstream requirement. Traditional milling cutter processing, such as milling cutters, walking cutters, punching, sawing, etc., will affect PCB circuit boards to varying degrees. However, the non-contact processing mode of laser cutting equipment does not generate stress, dust and processing gaps. These advantages make this processing mode stand out and become more and more popular among major manufacturers. Of course, using PCB laser cutting machines to cut circuit boards also has its drawbacks, that is, compared with traditional walking cutters and milling cutters, the processing speed is much slower.

What affects the cutting speed of the PCB laser cutting machine?

1. Processing method of PCB laser cutting machine

The high-energy beam emitted by the laser enters the vibrating mirror through the light expander, clicks to drive the lens to deflect, and the guide mirror focuses into a smaller light spot, which scans back and forth on the surface of the PCB circuit board, peeling off layer by layer to form a cut.

2. Factors affecting the processing speed of PCB laser cutting

The speed of laser cutting PCB is closely related to the processing material, material thickness, laser power and laser type.

A Processing material: Compared with paper substrate PCB, it is relatively easy to process and has high processing efficiency, followed by FR4. Glass fiber board, etc., and aluminum substrate is difficult to cut.

B Material thickness: The thinner the material, the easier it is to process. Therefore, many manufacturers use v-cut or stamp. The connection point cutting mode uses laser cutting equipment to process PCB circuit boards.

C Laser power: The higher the power, the higher the processing speed, so when using laser cutting equipment to process PCB circuit boards, they are all high-power lasers.

D Laser type: The current market is the mainstream cutting PCB processing laser, with high-power UV laser and high-power green laser. UV laser is relatively good, but the processing speed is low. Green laser processing speed is fast, but the effect is not as good as UV.

3. Processing speed of PCB laser cutting machine

From the four points mentioned in the second item above, there is no fixed value for processing speed, and the variable is large. Customers need to consider it according to their actual situation. Here, we only take 1.6mm fiberglass board as an example and set a fixed value as a reference for customers.

A uses a 20W UV laser, 3 beam mirrors, and F=170mm focusing mirror to cut light boards without V grooves and stamp holes.

In the case of no black edge, the processing efficiency is converted to 5mm/s without black edge.

The processing efficiency of gray edge without black is converted to 8-20mm/s without millimeter processing speed (depending on the actual processing quality)

Using 40W green laser, 3 beam expanders, F=170mm focusing mirror, cutting light plate without V groove and stamp hole. There is no way to turn it into 10-25mm/s (depending on the actual processing quality).

The response speed of FR4 board is faster, and the processing speed of 0.4mm paper substrate can even reach 80mm/s.

The efficiency, thickness, material, laser type and power of PCB laser cutting machine have a great influence on the PCB circuit board processing. The processing speed can be determined according to the actual situation, and there is no fixed standard.