The development characteristics and trends of image measuring instruments

In recent years, with the rapid transformation of the national equipment manufacturing industry, it has greatly promoted the development of the image measuring instrument industry. Measurement technology has changed from mechanical contact contrast measurement to non-contact optical image measurement; measurement accuracy has also changed from the traditional 0.01mm to 0.001mm, even 0.0005mm, etc.; measurement efficiency has evolved from simple manual to fully automated high-speed measurement ; The measurement range has developed from ordinary mechanical processing measurement to the current miniaturization and miniaturization of circuit boards and liquid crystal panels. With the rapid development of optical mechatronics and integrated technology, non-contact optical imaging measurement has become the development trend of the measuring instrument industry.

Modern measuring instruments have developed from mechanical measurement in the past to the current highly integrated non-contact optical image (image measuring instrument) measurement technology of opto-mechanical and electrical integration. Compared with traditional measuring instruments, non-contact optical imaging measuring instruments mainly have the following main features:

1 Diversity of measurement methods: non-contact optical imaging measurement

Tradition The measurement methods used for measurement are mechanical vernier calipers, micrometers and other contact measurement; modern measurement methods are diverse, including measurement techniques such as laser scanning measurement and optical image measurement, especially optical image measurement has been promoted and applied in recent years. Using sensor technology, electronic technology, software technology and optical CCD imaging and other comprehensive subject technologies, image processing analysis and detection of the tested products are carried out, which effectively solves the uncertain effects of human factors on the products and improves the accuracy of detection .

2 High-precision measurement: Accuracy has moved from the traditional millimeter level and micrometer level to nanometer level, and the measurement accuracy level has been qualitatively improved.

The traditional detection methods mainly use steel rulers, Commonly used testing instruments such as vernier calipers and micrometers measure the measured items. The measurement accuracy can only reach the millimeter or more micron level, and the measurement accuracy is low, which can no longer meet the development needs of the modern machinery and equipment manufacturing industry. Non-contact optical image measurement, through scientific image processing analysis and calculation methods, the accuracy level can reach micron and nanometer accuracy, which improves the accuracy level of detection and provides a reliable guarantee for the development of the manufacturing industry.

3 High-efficiency inspection: automatic mass inspection

The traditional inspection methods are manual and single-piece inspections. If you encounter mass production and require full inspection, then It will cause low detection efficiency and increase more human uncertain factors. Non-contact optical image measurement, through automatic servo control, coupled with reasonable tooling and inspection tools, will greatly improve the efficiency and accuracy of detection, and it can detect several, dozens or even more products per minute, especially Suitable for mass production and testing.

4 Diversity of measurement range: The same instrument can detect multiple elements such as length, angle and roundness.

Traditional testing tools mainly detect length dimensions, such as steel rulers and vernier calipers. And micrometers, etc., for roundness, angle, etc. testing, other special testing measuring tools have to be replaced; non-contact optical image measuring instruments can simultaneously detect multiple elements such as length, angle, and roundness. Multiple responsibilities are provided to meet the needs of customers. Position detection needs.

From the perspective of the development of world science and technology, the fully automatic high-precision optical image measuring instrument integrating optical-mechanical-electrical integration technology has its own non-contact measurement, high precision, high efficiency and measurement range. In addition, the future development hotspots also include:

1 Modularity: In order to ensure the mass production of measuring instruments, the generalization and modularization of product design should be considered when designing, and different products can be used for each other. , Borrowed, each module realizes a single function, which is convenient for disassembly, maintenance and function replacement; at the same time, the mechanical, software and electrical parts are mutually infiltrated and independent of each other, which is convenient for maintenance.

2 Online: With the development of factory automation, the application of robots will become more and more extensive. How to realize the automated production of the factory, how to ensure the stability of product quality, and the online inspection of factory automation will also be affected. More and more favored. The online detection and identification system will usher in the spring of its development.

3 Integration: With the rapid development of China’s entire national economy, various science and technology at home and abroad continue to flow in, high-precision machining, optical technology, microelectronics technology, software technology, sensor technology and Various advanced technologies such as laser technology continue to learn from each other and integrate, and the measuring instrument will also develop into an advanced detection instrument integrating various disciplines.

The development of the high-precision non-contact optical imaging measuring instrument industry is not only the needs of the development of the national equipment manufacturing industry, the needs of the development of measuring instruments, but also the actual work needs of the majority of instrument manufacturers and users. Bring considerable economic value to the country, society and individuals.