Since the 1990s, how to develop new products with high quality, high performance and price ratio and easy to be accepted by users has become the focus of market competition in the shortest time. It is predicted that the current development goals of manufacturing technology are: to strengthen product development capabilities and manufacturing capabilities with independent innovation technology, enhance cooperation capabilities among enterprises, shorten product time to market, improve product quality and production efficiency, and thus improve the market demand of enterprises. Resilience and comprehensive competitiveness. Therefore, the development of advanced manufacturing technology is changing with each passing day. Following the computer integrated manufacturing technology, parallel engineering, lean manufacturing, intelligent manufacturing, agile manufacturing, and rapid prototyping have emerged. For example, in the United States in the 1990s, the "three threes" were realized, that is, the product life cycle was three years; the trial production cycle was three months; and the design cycle was three weeks. The main trend of future manufacturing development is the development of precision, flexibility, intelligence, integration, globalization, networking and virtualization. Precision testing technology should adapt to this development. Its role in the mechanical discipline is to serve the advanced manufacturing industry and take on the responsibility of quality and technical assurance. First of all, we must take the improvement of product quality and the most important goal to be achieved as the basic starting point, and we must carry out precision testing throughout the entire process of product manufacturing. Secondly, the precision testing technology should be conducive to the improvement of production efficiency, at least not to hinder the production speed. Therefore, the detection method should be able to adapt to the rapid development of production requirements, can not be detected solely for testing, and can not affect the production efficiency due to the requirements of testing. From a more positive perspective, it should be due to the correct service and guarantee of precision testing technology to promote the improvement of production capacity. Next page Art Blade,Runner Art Blade,Utility Knife,Utility Blade Chunlei Quntification Co.,Ltd , https://www.hychunleitools.com
According to the requirements of the development of advanced manufacturing technology, precision testing technology is constantly expanding its new measurement principle, testing method and testing information processing technology in terms of its own development law. In terms of mechanical discipline, it is expected to develop in the following aspects.
1. zero waste production measurement and control <br> <br> in machinery manufacturing, quality assurance is the ideal goal of zero waste manufacturing practice production, in achieving this goal, the role of Precision Measurement Technology and importance It is self-evident. The processing quality of the parts and the assembly quality of the complete machine are related to the analysis and processing of the processing equipment, test equipment and test information, so zero waste production is realized. From the perspective of precision testing, the following aspects should be considered:
(1) Check the machine tool before machining the workpiece. How to quickly and accurately check the processing equipment and obtain the accuracy of the machine tool is very beneficial to greatly reduce rework and even eliminate rework. Of course, this includes research on testing equipment, and research and development has been done in this area abroad.
(2) On-line measurement or other forms of 100% inspection of the workpiece during the production process, it is necessary to study the test equipment suitable for dynamic or quasi-dynamic, and even integrate into the special test equipment in the processing equipment to perform real-time testing. . According to the test results, the process parameters are continuously modified, and the processing equipment is supplementally adjusted or feedback controlled. From the perspective of precision theory, we must also study the dynamic precision theory, including the review of dynamic accuracy.
(3) It should be studied how to make full use of measurement information to achieve zero waste production. Through the full utilization of 100% online measurement data, the dynamic characteristics of the error distribution in the processing and measurement process are analyzed, and the zero waste manufacturing is given according to the dynamic characteristics of the machining error and the accuracy loss characteristics of the sensor, as well as the product quality requirements and tolerance regulations. The basic theoretical model. Make full use of modern mathematical methods such as artificial neural networks and genetic algorithms to accurately predict the quality of processing and achieve advanced quality control.
2. visual testing technology <br> <br> non-contact test technology there are many, is particularly worth mentioning is the visual testing technology. The development of modern visual theory and technology is not only to simulate the functions performed by the human eye, but more importantly, it can accomplish the work that the human eye cannot do, so visual testing technology is the latest technology in electronics, optics and computers. On the basis of continuous maturity and perfection, it has developed by leaps and bounds. Visual test technology is an emerging test technology based on computer vision research. It is different from visual pattern recognition and visual understanding of computer vision research. The visual test technology focuses on the geometric size of objects and the position measurement of objects, such as The measurement of the three-dimensional size of the car body-in-white, the rapid measurement of the three-dimensional surface of the mold, the coaxiality measurement of large workpieces, and the coplanarity measurement of the BGA chip. It can be widely used in active and real-time measurement processes such as online measurement and reverse engineering. Visual test technology has developed rapidly in foreign countries. As early as the 1980s, the National Bureau of Standards estimated that 90% of engineering inspection tasks would be completed by visual test systems. From the current point of view, more than 100 companies in the United States are among the operating markets of visual test systems. It is obvious that the visual test system is very promising. At the Beijing International Machine Tool Fair in October 1999, we have seen instruments developed by foreign visual inspection technology, such as mobile optical coordinate measuring machine, high-speed high-precision digital scanning system and non-contact optical coordinate measuring machine. .