The mold industry directly serves high-tech industrialization, and itself uses a large number of high-tech. Obviously, the mold industry has become an important part of the high-tech industry, and the interaction between the two is frequent and complementary. Measuring the level of mold products is mainly based on its manufacturing precision, surface roughness, complexity, service life and manufacturing cycle. Although at present, China's machine tool industry has been able to provide complete sets of high-precision processing equipment , but in processing and positioning accuracy, processing surface roughness, machine tool rigidity, stability, reliability, tool and accessory compatibility and accuracy retention. There is still a certain gap compared with foreign countries. China's industrial production faces the challenges of many types of products, fast update and fierce market competition. Mold manufacturing must meet the requirements of short delivery time, high precision, good quality and low price. At present, the development of mold technology is mainly reflected in the following aspects.
1. Mold CAD/CAM/CAE technology is fully popularized
As mold CAD/CAM technology has developed into a more mature common technology, the hardware and software prices of this technology have been reduced to a level acceptable to SMEs in recent years. Enterprises with conditions should actively carry out the deepening application of this technology, that is, carry out enterprise information engineering, which can be gradually deepened and improved from CAPP→PDM→CIMS→VR.
2. Rapid prototyping and related technologies are better developed
Rapid Prototyping (RPM) technology is a high-tech technology that combines the latest developments in precision machinery manufacturing, computing, NC technology, laser forming technology and materials science. This technology can be used directly or indirectly in mold manufacturing, from the conceptual design of the mold to the completion of the manufacturing process, which is only 1/3 of the time required by the conventional processing method and about 1/4 of the cost. Therefore, the combination of rapid tooling technology and rapid prototyping technology will be the further development of traditional rapid tooling technology.
3. High-speed milling is more widely used.
Compared with traditional cutting, high-speed milling has the advantages of low temperature rise and small thermal deformation. It has now evolved toward greater agility, intelligence, and integration. Using high-speed milling reduces mold manufacturing cycles and reduces costs.
4. The role of high-speed scanning technology is more and more significant
Mold high-speed scanning and digital systems have played a greater role in reverse engineering. The high-speed scanner and mold sweeping system have been applied in more than 200 mold factories in China, and achieved good results. The system provides many functions required from model or physical scanning to machining the desired model, which greatly shortens the mold development cycle. Some fast scanning systems can be quickly installed on existing CNC milling machines and machining centers. High-speed scanners scan up to 3m/min.
5. EDM milling technology will become a development trend
EDM milling technology, also known as EDM, is a new technology that replaces the traditional cavity machining of shaped electrodes. It uses a simple tubular electrode that rotates at high speed for 3D or 2D contour machining. CNC milling is the same, so there is no longer a need to manufacture complex shaped panels, which is clearly a major development in the field of EDM. Machine tools using this technology have been used in mold processing abroad, and this technology is expected to be further developed.
6. Super finishing and composite processing application prospects can be German
With the development of precision and large-scale molds, super-precision machining with a machining accuracy of more than 1 μm and composite machining with integrated technologies of electricity collection, chemistry, ultrasonics and lasers will be of great use.
7. Hot runner technology began to promote
Since the use of hot runner technology molds can improve the productivity and quality of the parts, and can greatly save the raw materials of the parts and save energy, the widespread application of this technology is a major change in plastic molds. The development of foreign hot runner technology is very fast. Half of the plastic molds have been used in hot runner technology, and some factories have even reached more than 80%. The effect is very obvious. Domestically, it has been promoted and applied in recent years, but the total has not reached 10%, and individual enterprises have reached about 30%. The development of national standards for hot runner components and the active production of low-cost, high-quality components are key to the development of hot runner technology.
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