We seldom introduce the PCB module, mainly because this link involves many chemical raw materials, which are easy to be biased. PCB is the bottom or foundation of the whole intelligent technology. Later, we will also choose some points to share with you. I hope you will like them.

Today we will talk about a technological point of PCB milling. PCB milling is sometimes called isolation milling or isolation milling, which is an important process to ensure the manufacture of high-quality PCB boards.

In short, PCB milling is an elimination process involving the removal of copper sheets from PCB material. This ensures that the pads are copied on the PCB design and the configuration is established. Although milling and etching are similar because both are elimination processes, milling and etching are different and do not involve the use of any harmful chemicals. Therefore, it is an ideal choice for anyone who does not have a suitable etching laboratory environment. In addition, etching chemicals are usually corrosive and will produce harmful fumes when they react with copper traces.

Advantages of PCB milling

PCB milling has many advantages in prototype design and some special PCB designs. Of course, the biggest advantage is that it does not involve the use of harmful chemicals. Of course, etching requires not only appropriate chemical treatment but also appropriate treatment methods. The wet process is also not suitable for high-resolution boards.

With a CNC PCB milling machine, you can quickly create PCB prototypes without worrying about chemicals. In addition, machine tools can be used for drilling, milling, and, in some cases, cutting.

However, it is important to remember that in different cases, milling and etching are preferred. For example, if mass production is required, etching is preferred. This can be seen from PCB manufacturers cooperating with current processing manufacturers that most of them are etched.

What is the processing method of CNC milling of the circuit board?

It has become an important technology in the production of printed circuit boards to use the method of CNC milling and carbide tools to process the contour and internal special-shaped holes of the printed circuit boards. Compared with cutting, blanking, and sawing, the machining surface is smooth, the dimensional accuracy is high, the material waste is avoided, and the machining cycle is shortened. The appearance of the latest multi-axis CNC milling machine has greatly reduced the processing cost. With the development of electronic technology, many printed circuit board circuits are close to the edge of the board.

This requirement can only be met by milling. Comparing CNC milling with other machining methods, the cost is an important indicator. In countries, regions, and regions with the high production technology of printed circuit boards and wide application of CNC milling, the cost of NC milling is lower than that of stamping dies. This is determined by production efficiency, equipment cost, tool cost, tooling cost, and other factors.

In addition, which method is used to process the shape of PCB is also related to the material and thickness of PCB. For example, xx pcs laminates containing more plasticizers can be pressed and sheared without rapid die wear.

However, if the printed circuit board material is very thin, such as the famous epoxy glass cloth plate, the punch wears quickly, and it is better to use CNC milling. In addition, the smoothness and dimensional accuracy of thick section thin plates can be easily obtained by CNC milling. Of course, in the production of printed circuit boards, blanking is still widely used with its corresponding accuracy.

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