Application of video measuring instrument in PCB industry

With the development of science and technology, the requirements for measuring accuracy of various components are getting higher and higher, so the requirements for the image measuring instrument, a precision measuring instrument, are becoming more and more stringent.

Optical measurement equipment advantages

The image measuring instrument is an artificial intelligent modern optical non-contact measuring instrument developed on the basis of digitalization. It inherits the excellent motion accuracy and motion control performance of digital instruments, integrates the design flexibility of machine vision software, and belongs to the cutting-edge optical dimension inspection equipment today.

1. CNC scanning batch measurement is realized:

The image measuring instrument has the function of CNC scanning and mass measurement. The step, step number, line width and line number can be set through the operation interface to achieve mass scanning and measurement. It can also use the combination of CNC automatic measurement and CNC scanning batch measurement function image to realize CNC composite measurement. Thus, the image measuring instrument has the performance characteristics of the automatic optical detector (AOI), and the batch testing efficiency is improved by a hundred times. The operators are easy and safe.

2. Realize automatic learning batch measurement:

The image measuring instrument has the automatic learning function based on machine vision and process control. Relying on the high-speed micrometer level displacement of digital instruments, it can self-learning and memorizing the measuring process path, focusing, point selection, function switching, manual correction, light matching and other operating processes. For batch measurement, the instrument can easily learn all the operator's practical operation processes, combine its automatic focusing, area search, target locking, edge extraction, and fuzzy operation of point matching to achieve artificial intelligence, and can automatically correct the offset caused by workpiece difference and displacement difference to achieve point selection, with high-precision repeatability.

3. Eagle eye zooming and returning

The image measuring instrument has a graphics window, and the measurement/mapping results are displayed in the window in a graphical manner. The surveying/mapping graph has the capability of stepless zoom, and can be viewed/zoomed locally; Measurement and dimensioning operations similar to CAD software can be performed in the window.

4. Auto focus assisted height measurement

The image measuring instrument has an image definition software algorithm based on machine vision, and has a fast auto focusing function in the micro servo control mode (technology). Auxiliary height measurement can be realized through automatic focusing operation on different layers (height measurement can also be realized by installing measuring contacts for CMM).

Application of optical measuring machine in PCB Industry

In PCB industry, image measuring instrument is mainly used to measure the shape of high-density PCB. Today, on the basis of strict requirements for the original electrical performance, customers are gradually moving towards the requirements for PCB appearance. Its profile tolerance tends to be harsh, so the image measuring instrument tool just makes up for this gap.

In addition, on the level of possible horizontal expansion, the image measuring instrument can also be used to measure PCB film, which is suitable for a high-tech detection of production tools in the process of plate making. Through the data provided by the project, the distance between any points of PCB film is automatically measured, and the data list is obtained for analysis, so that the expansion and contraction coefficient of PCB film can be scientifically obtained, which can more scientifically assist production.

For the so-called PCB detection, we mostly use the image instrument to detect the length, width and height of the PCB, so we can generally use the automatic image measuring instrument to detect. Of course, for the PCB height detection, we can add probes on the basis of the image instrument to achieve the purpose of simple three-dimensional detection, which is more than enough for the PCB height detection.

In terms of PCB detection technology and detection instruments, we can clearly see from the above introduction that using an automatic image measuring instrument to complete the detection of PCB related parameters is completely achievable by an automatic image measuring instrument, and can complete PCB related detection tasks with high quality.