1、毕 业 设 计（论 文）外 文 参 考 资 料 及 译 文 译文题目: Mold development 模具的发展 学生姓名： 学 号： 专 业： 所在学院： 指导教师： 职 称： 20xx年 2月 27日Mold development The position of die in industrial productionIn March 1989 the State Council promulgated the on the current industrial policy decision points in the mold second first production an
2、d capital construction sequence for the machinery industry transformation sequence of the (after the large-scale power generation equipment and the corresponding power transmission equipment), establish tooling industry in an important position in the national economy. Since 1997, the mold and its p
3、rocessing technology and equipment have been included in the current national focus on encouraging the development of industries, products and technology directory and encourage foreign investment industry directory. Approved by the State Council, from 1997 to 2000, the more than and 80 state-owned
4、professional mold factory VAT refund of 70% of the preferential policies to support the development of mold industry. All these have fully reflected the State Council and the relevant state departments to develop the mold industry attention and support. At present the world mold annual output value
5、of about $60 billion, Japan and the United States and other industrialized countries die of industrial output value has exceeded the machine tool industry, from the beginning of 1997, the output value of Chinas mold industry over the machine tool industry output.According to statistics, in home appl
6、iances, toys and other light industries, nearly 90% of the parts are integrated with the production of chopsticks; in the aircraft, automobile, agricultural machinery and radio industries, this proportion is more than 60%. For example, a type of fighter aircraft manufacturing, mold usage of more tha
7、n thirty thousand sets, which hosts eight thousand sets, two thousand sets, twenty thousand sets of auxiliary engine. From the production value, since 80s, the United States, Japan and other developed countries, the output value of the mold industry has exceeded the machine tool industry, and there
8、is a trend of continued growth. According to the International Association of technology production forecast, to 2000, 75%, finishing a product as the rough machining of the 50% will be completed from the mould; metal, plastic, rubber, ceramics, building materials and other industrial products, most
9、 will be completed from the mould, more than 50% of the more than 80% plastic sheet metal, especially into products through the mold. The historical development of dieThe mold can be traced back to thousands of years ago, pottery and bronze casting, but developed with the rise of modern industry lar
10、ge-scale use is.In nineteenth Century, with the arms industry (a gun shell), the development of the watch industry, radio industry, widely used in die. After the two World War, with the rapid development of the world economy, it has become a mass production of household appliances, automobiles, elec
11、tronic equipment, cameras, watches and other parts of the best way. From the view of the world, the time stamping technology in the United States in the forefront of many advanced mold technology, such as high efficiency, simple die mold, die and stamping the high life automation, mostly originated
12、in the United States and Switzerland; fine blanking, cold extrusion technology in Germany, the Soviet Union of plastic processing is in the advanced ranks in the world. In 50s, the focus of the mold industry is based on the requirements of the customer, the production of products to meet the require
13、ments of the mold. Mold design experience, with reference to existing drawings and perceptual knowledge, the design of the mold parts of the lack of a clear understanding of the function. From 1955 to 1965, is the exploration and development of time pressure processing on the main components of the
14、mold function and stress state of mathematics bridge, and put the knowledge used in the actual scene, the stamping technology has rapid development in all aspects. The result is summarized the principle of the die design, and makes the pressure machine, stamping materials, processing methods, area s
15、tructure, Mei face mold materials, mold manufacturing method, a new automatic device, to the practical direction of advance, the first stage so that the stamping process can produce excellent products from instrument.Enter the second phase of the development of high-speed, start-up, precision and safety in 70s. In the process of continuous emergence of a variety of high efficiency, service life, high precision multi function automatic tool. It is represented by more than one station progressive die and more th
