Throughout the past 20 years, with the rapid advancement of microelectronics and computer technology, the machine tool is moving towards high precision, multi-function, high-speed, high efficiency, compound function, intelligent, etc., and promotes the machine-oriented technology to digitalization and integration. Development, intelligent, paperless, green processing, lean and efficient development. Moreover, due to the continuous improvement of the technical level of the design technology, the use of equal strength, more and more overall structure, the requirements of the workpiece are more and more complicated. Especially in the face of digital technology-led, advanced manufacturing technology represented by advanced assembly technology, composite component manufacturing, and CNC machining as the platform, the implementation of "assembly as the core, accurate manufacturing of parts as the basis, based on digital technology" The process design idea, the establishment of digital, precise, flexible manufacturing technology system, to achieve low-cost, high-efficiency research goals, advanced coordinate measurement technology has been throughout the entire process of aviation product manufacturing.
Since any shape is composed of spatial points, all geometric measurements can be attributed to the measurement of spatial points, so the accurate acquisition of spatial point coordinates is the basis for evaluating any geometric shape. This is the principle of coordinate measurement technology. The basic principle of a typical coordinate measuring device is to place the device under test in its allowed measurement space, accurately measure the values ​​of the points on the surface of the device under test at three coordinate positions, and process the coordinate values ​​of these points through computer data processing. It is fitted to form measurement elements (such as circles, spheres, cylinders, surfaces, etc.), and its shape, position tolerance and other geometric quantity data are obtained through mathematical calculation. With the development of advanced computer technology, laser technology, sensor technology and automation technology, modern coordinate measuring technology has developed rapidly, and high-precision measuring equipment such as high-precision coordinate measuring machine, mobile articulated arm and laser tracker have appeared successively. With high precision (up to micron level), versatility (can replace multiple length measuring instruments), digitization (transforming solid models into digital three-dimensional coordinates), it is widely used in product mapping and complex Surface inspection, tooling fixture measurement, intermediate measurement in the development process, online measurement of CNC machine tools or flexible production lines. At present, these advanced measurement technologies have become one of the pillar technologies for the development of the aviation industry. They are the basis for ensuring high complexity and high precision in the manufacturing industry. Especially in today's all-digital design and manufacturing, it is even more inseparable from digital coordinate measurement. The device realizes the geometric feature detection, extracts the coordinate measurement feature requirement from the original data of the design digital model, and compares the actual measurement data with the ideal design data to better ensure the design, processing, detection of the reference and the coordinate system. Compliance and uniformity, better feedback to the design for parameter correction, so advanced coordinate measurement techniques are becoming more and more important.
Therefore, it is not difficult to see that in the past few years, the aviation manufacturing industry has not only used many advanced composite tools such as tool detection, coordinate positioning measurement and machining, and professional CNC equipment or large-scale machining center equipment. It is also equipped with many coordinate measuring machines, laser trackers suitable for large-scale measurement, and joint advanced measuring equipment such as articulated arms. Laser tracker has been widely used in product process inspection instead of theodolite and level; coordinate measuring machine has been widely used in parts processing or product acceptance testing to achieve efficient, versatile, digital measurement; laser projection system (Laser Edge Projection System) ) has also been used. With the revolutionary requirements of assembly technology, digital detection equipment will be more widely used.
Faced with a large number of advanced coordinate measuring equipment, how to play the key role of coordinate measuring technology in aviation manufacturing, it is more and more important to provide technical support for the aviation manufacturing industry. The following are based on the various production practices encountered in the past years. A kind of measurement problem, take the coordinate measurement technology as an example to talk about some of your own ideas.
The important role of advanced coordinate measurement technology in aviation manufacturing
Mendeleev said that there is no science without measurement. Measurement technology is the basis for scientific research and production, and plays an important role in the development of scientific research, especially in digital manufacturing today, the fixed, special or manual measuring tools. The inspection mode of the flat plate plus height gauge plus caliper is completely unable to meet the needs of modern manufacturing and more complex shape workpiece measurement. Instead, coordinate measurement has played an increasingly important role: benchmarking and positioning dimension measurement before finishing, trial processing measurement after new process development, and providing full product measurement, unqualified product rework measurement and data analysis. . In the current trend of increasing emphasis on personalized production, we advocate 100% inspection to ensure the highest quality of products. We not only ensure the correctness of tools, machining benchmarks and positioning with accurate measurement data, but also guide the machining process with real measurement data. , monitoring technology, testing products, quality can be truly guaranteed. More importantly, through measurement, not only can accurately find, feedback and coordinate the gap between design and actual processing capability, but also play a bridge between design, process and machining, and realize measurement data. For the control and evaluation of products, the design and process parameters are constantly revised to achieve lean manufacturing.
Gabion Box
Gabion mesh are wire containers made of Hexagonal Wire Netting. Wire diameter varies with the hexagonal netting. According to different surface treatments, gabion mesh can be divided into galvanized and PVC Coated Wire mesh. For galvanized hexagonal wire netting, the wire diameter ranges from 2.0 mm to 4.0 mm. For PVC coated hexagonal wire netting, the outside diameter ranges from 3.0 mm to 4.0 mm. The selvedge wire is one gauge thicker than the mesh wire.
Gabion Box,Black Gabion Box,Electro Galvanized Gabion Box,Hot-Dipped Galvanized Gabion Box
HENGSHUI YUZHENG IMPORT AND EXPORT CO., LTD. , https://www.yzironnails.com