When China's manufacturing faces "adjustment and transformation, innovation and upgrading", how to make "Made in China" become "China's creation"? The mold equipment manufacturing industry plays a pivotal role as a basic and strategic industry for the development of the national economy. Has become an important part of modern manufacturing technology. According to Luo Baihui, a mold expert, the modern mold manufacturing technology regime is developing in the direction of accelerating information driving, improving manufacturing flexibility, agile manufacturing and system integration, CAD/CAM technology of molds, laser rapid prototyping technology of molds, precision forming of molds. Technology, mold ultra-precision machining technology, mold design using finite element method, boundary element method for flow, cooling, heat transfer process dynamic simulation technology, mold CIMS technology, mold DNM technology and numerical control technology It covers almost all modern manufacturing techniques.
1. High-speed milling: third-generation molding technology
High-speed milling not only has high processing speed, good processing precision and surface quality, but also has low temperature rise (the workpiece is only increased by 3 °C) compared with the traditional cutting process, and the thermal deformation is small, so it is suitable for temperature and thermal deformation. Processing of sensitive materials (such as magnesium alloys); also due to the small cutting force, can be applied to the processing of parts with thin walls and poor rigidity; reasonable selection of tools and cutting amount can achieve a series of advantages such as processing of hard materials (HRC60). Luo Baihui believes that high-speed milling processing technology is still a hot topic at present, and it has developed into a higher agility, intelligence, and integration, and has become the third-generation molding technology.
2, EDM milling and "green" product technology
From the point of view of foreign electric machining machines, the performance, process index, intelligence, and automation have reached a very high level. At present, the new trend in foreign countries is to perform EDM milling technology (EDG processing technology). Research and development, this is a new technology to replace the traditional cavity machining with shaped electrodes. It is a simple tubular electrode rotating at high speed for 3D or 2D contour machining (like CNC milling), so no longer need to manufacture. Complex shaped electrodes, which is clearly a major development in the field of EDM.
Recently, Mitsubishi Corporation of Japan has introduced new progress in the EDSCAN8E EDM machine. The machine can automatically compensate for electrode loss. The dedicated CAM system developed for this machine on Windows 95 can be linked with common CAD such as AutoCAD, and can measure online precision to ensure high precision machining. In order to confirm whether the shape of the machine is abnormal or defective, the CAM system can also realize simulation processing.
At the same time as the advancement of EDM technology, the safety and protection technology of EDM has received more and more attention. Many electric machine tools have considered safety protection technology. At present, the European Community has stipulated that machine tools without the “CE†mark cannot enter the European Community market, and the international market is paying more and more attention to the requirements of safety protection technology.
At present, the main problem of EDM machine tools is radiation harassment, because it has a great impact on safety and environmental protection. In the case of more and more attention to "green" products in the international market, as the leading equipment for EDM processing of EDM machines Green "product technology" will be a problem that must be solved in the future.
3. New generation mold CAD/CAM software technology
At present, the mold software developed by Britain, the United States, Germany and other countries and some universities and research institutes in China has the characteristics of intelligent, integrated and mold manufacturability evaluation of the new generation of mold CAD/CAM software.
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