Since the reform and opening up of Guangdong mechanical processing plant, with the rapid development of the national economy, the market demand for cold stamping die is growing. In recent years, the cold stamping die and mold industry has been developing rapidly at a growth rate of about 15%. The ownership of cold stamping die and mold enterprises has also undergone tremendous changes. In addition to the state-owned professional die and mold factories, the collective, joint venture, sole proprietorship and private enterprises have also developed rapidly.
With the accelerating pace of international integration and the increasingly fierce market competition, Guangdong mechanical processing plants have increasingly realized the importance of product quality, cost and new product development ability. Cold stamping die manufacturing is one of the most basic elements in the whole chain. Cold stamping die manufacturing technology has become an important symbol to measure the level of a country's manufacturing industry, and to a large extent determines the survival space of enterprises.
In recent years, many cold stamping die and mould enterprises in Guangdong machining plant have increased the investment for technological progress, and regard technological progress as an important driving force for enterprise development. Some domestic mold enterprises have popularized 2D CAD, and began to use UG, Pro / Engineer, I-DEAS, Euclid is and other international general software, some manufacturers also introduced Moldflow, C-flow, DYNAFORM, optris and magmosoft and other CAE software, and successfully applied in the design of stamping die.
The manufacturing technology of large stamping die represented by automobile panel die has made great progress. The die factory of Dongfeng Motor Company and FAW die center have been able to produce some car panel dies. In addition, many research institutions and colleges carry out the research and development of mold technology. After years of hard work, remarkable progress has been made in Die CAD / CAE / CAM technology; It has made contribution to improve the quality of mould and shorten the period of mould design and manufacture.
Although China's cold stamping die industry has made remarkable development in the past ten years, there is still a big gap compared with developed countries in many aspects. For example, the proportion of precision processing equipment in cold stamping die processing equipment is relatively low; The popularization rate of CAD / CAE / CAM technology is not high; Many advanced die technology is not widely used, and so on, resulting in a considerable number of large, precision, complex and long life cold stamping dies rely on imports.
With the continuous progress of science and technology, the production of modern industrial products is becoming more and more complex and diversified, and the performance and quality of products are also improving. Therefore, higher requirements are put forward for cold stamping technology, Cold stamping technology itself is also in constant innovation and development. The development idea of cold stamping technology is to improve and expand the advantages of cold stamping technology as far as possible and overcome its disadvantages
(1) In the development of cold stamping technology, it is necessary to correctly determine the process parameters and the shape and size of the working part of the cold stamping die, improve the quality of stamping parts and shorten the trial production cycle of new products. On the basis of strengthening the theoretical research of stamping forming, the stamping forming theory can play a guiding role in the actual production, A set of advanced process analysis and calculation methods closely combined with the actual production has been gradually established. Abroad, elastoplastic finite element method has been used for stress-strain analysis and computer simulation of the forming process of automobile covering parts, so as to predict the possibility and possible problems of a certain process plan for parts forming.
(2) In order to speed up the product upgrading and overcome the shortcomings of long die design cycle, we should vigorously carry out the research on CAD / CAM technology of die. In China, we should pay special attention to strengthen the research on CAD / CAM technology of multi position progressive die.
(3) In order to meet the needs of mass production and reduce labor intensity, it is necessary to strengthen the research on mechanization and automation of cold stamping production, so that the general medium and small parts can be produced by multi position progressive die on high-speed press, so as to achieve a high degree of automation of production and further improve the productivity of stamping.
(4) Expand the application scope of cold stamping production, so that cold stamping is suitable for both mass production and small batch production; We should pay attention to the development of new forming processes such as precision blanking (especially thick blanking), high-energy forming, soft die forming, pressure and superplastic processing. We should also promote the application of simple die (soft die and low melting point alloy die), general combined die, CNC punch and other equipment The development of new processing method should be further strengthened