Application of tuowei rapid prototyping technology in automobile mold manufacturing

Application of extension rapid prototyping technology in automobile mold manufacturing the shape of the inner cavity of the intake pipe of the automobile engine is composed of very complicated free surfaces, it has a very important impact on improving the intake efficiency and combustion process. During the design process, airway tests need to be carried out on different intake trachea schemes. The traditional method is to manually process the trachea wood mold or gypsum mold described by dozens of sections, then cast the intake pipe with sand mold. During processing, the understanding of the drawings by the wood mold and the technical level of itself often lead to the deviation between the parts and the design intent. Sometimes the impact of this error is significant. Although the use of CNC machining can better reflect the design intent, but its preparation time is long, especially when the geometry is complex. Shenzhen tuowei prototype model production company used rapid prototyping technology to produce the outer mold and inner cavity mold of the intake pipe, and achieved satisfactory results. This laser layered manufacturing technology is applied in automobile mold manufacturing, which can sintering various materials such as wax, polycarbonate, nylon and metal. The steel-copper alloy injection mold manufactured with the system can be injected into 50 thousand pieces of workpiece. Steel mold can also be combined with other technologies to achieve rapid manufacturing of metal mold. Or directly manufacture EDM electrodes with high complex accuracy for the processing of steel mold cavities such as injection molds, forging molds, die casting, etc. medium-sized, more complex electrode is generally 4 ~ 8h can be completed, and the complex accuracy fully meets the engineering requirements. Ford Motor Company has achieved satisfactory results in making automobile molds with this technology. Shanghai Jiaotong University has also combined RP with precision casting to produce more than 80 pairs of imported alternative molds for automobile and automobile tires and other industries. Compared with the traditional machining method, the production cost and cycle of Rapid mold manufacturing are greatly reduced. Every year, China needs to import molds for billions of dollars, mainly complex molds and precision molds. Therefore, the application prospect of laser rapid layered manufacturing technology in the future automotive mold manufacturing industry is very broad. Application in the manufacture of automobile lamps and lanterns most of the shapes of automobile lamps and lanterns are irregular, the surface is complex, and the mold manufacturing is very difficult. Through rapid prototyping technology, accurate product samples can be obtained quickly, which provides a favorable reference for mold design CAD and CAM. At the same time, through the rapid molding technology, the lamp mold can be quickly and accurately manufactured by the method of investment casting. In short, the development of foreign body molds can be completed in a relatively short time. Five years ago, it took about 24 months to complete the development of body molds around the world, 18 months three years ago, and only 12 months now. At present, Japan is developing at the fastest speed, only 8 months. China's development is much slower. 2004 mold output value up to more than 53 billion yuan than original'Fifteen' The planned target of 49 billion yuan in 2005 is more than 4 billion yuan more. Among them, the average annual growth rate of automobile panel molds is higher than the total level of the industry, and the average annual growth rate in recent years is close to 20%. To measure the comprehensive competitive strength of a country's automobile industry, it is not only from the perspective of the number of automobile production, but also from the aspects of auto independent development, manufacturing level and ability. Since more than 90% of the parts in automobile production depend on mold molding, it can be said that automobile mold technology is an important technological basis for automobile manufacturing, and it is the fundamental condition for competition with the world automobile manufacturing industry. At present, although China's automobile mold technology level and ability have developed rapidly after more than ten years, it is still at a low level in the world automobile manufacturing industry. Only by using advanced laser layered manufacturing technology can the development time be greatly shortened and the manufacturing level of China's automobile industry be improved.

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