菜单
  
    Die history 1 Die position in industrial production Mold is a high-volume products with the shape tool, is the main process of industrial production equipment.
    With mold components, with high efficiency, good quality, low cost, saving energy and raw materials and a series of advantages, with the mold workpieces possess high accuracy, high complexity, high consistency, high productivity and low consumption , other manufacturing methods can not match.  Have already become an important means of industrial production and technological development. The basis of the modern industrial economy.32494
    The development of modern industrial and technological level depends largely on the level of industrial development die, so die industry to national economic and social development will play an increasing role.  March 1989 the State Council promulgated "on the current industrial policy decision points" in the mold as the machinery industry transformation sequence of the first, production and capital construction of the second sequence (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, they have to mold and its processing technology and equipment included in the "current national focus on encouraging the development of industries, products and technologies catalog" and "to encourage foreign investment industry directory."  Approved by the State Council, from 1997 to 2000, more than 80 professional mold factory owned 70% VAT refund of preferential policies to support mold industry.  All these have fully demonstrated the development of the State Council and state departments tooling industry attention and support.  Mold around the world about the current annual output of 60 billion U.S. dollars, Japan, the United States and other industrialized countries die of industrial output value of more than machine tool industry, beginning in 1997, China's industrial output value has exceeded the mold machine tool industry output.
      According to statistics, home appliances, toys and other light industries, nearly 90% of the parts are integrated with production of chopsticks; in aircraft, automobiles, agricultural machinery and radio industries, the proportion exceeded 60%.  Such as aircraft manufacturing, the use of a certain type of fighter dies more than 30,000 units, of which the host 8000 sets, 2000 sets of engines, auxiliary 20 000 sets.  From the output of view, since the 80's, the United States, Japan and other industrialized countries die industry output value has exceeded the machine tool industry, and there are still rising.  Production technology, according to the International Association predicts that in 2000, the product best pieces of rough 75%, 50% will be finished mold completed; metals, plastics, ceramics, rubber, building materials and other industrial products, most of the mold will be completed in more than 50% metal plates, more than 80% of all plastic products, especially through the mold into.
     2 The historical development of mold
      The emergence of mold can be traced back thousands of years ago, pottery and bronze foundry, but the large-scale use is with the rise of modern industry and developed.
      The 19th century, with the arms industry (gun's shell), watch industry, radio industry, dies are widely used.  After World War II, with the rapid development of world economy, it became a mass production of household appliances, automobiles, electronic equipment, cameras, watches and other parts the best way.  From a global perspective, when the United States in the forefront of stamping technology - many die of advanced technologies, such as simple mold, high efficiency, mold, die and stamping the high life automation, mostly originated in the United States; and Switzerland, fine blanking, cold in Germany extrusion technology, plastic processing of the Soviet Union are at the world advanced.  50's, mold industry focus is based on subscriber demand, production can meet the product requirements of the mold.  Multi-die design rule of thumb, reference has been drawing and perceptual knowledge, on the design of mold parts of a lack of real understanding of function.  From 1955 to 1965, is the pressure processing of exploration and development of the times - the main components of the mold and the stress state of the function of a mathematical sub-bridge, and to continue to apply to on-site practical knowledge to make stamping technology in all aspects of a leap in development.  The result is summarized mold design principles, and makes the pressure machine, stamping materials, processing methods, plum with a structure, mold materials, mold manufacturing method, the field of automation devices, a new look to the practical direction of advance, so that pressing processing apparatus capable of producing quality products from the first stage.
  1. 上一篇:换热器的机械设计英文文献和中文翻译
  2. 下一篇:ASP.NET英文文献和中文翻译
  1. 汽车内燃机连杆载荷和应...

  2. 审计的优化管理英文文献和中文翻译

  3. FPGA的全景拼接相机的优化...

  4. 气味源定位的有限时间粒...

  5. PLC仿真的虚拟工厂英文文献和中文翻译

  6. ZigBee-RFID混合网络的节电英文文献和中文翻译

  7. PLC可编程控制器的介绍英文文献和中文翻译

  8. 上市公司股权结构对经营绩效的影响研究

  9. C++最短路径算法研究和程序设计

  10. 江苏省某高中学生体质现状的调查研究

  11. 中国传统元素在游戏角色...

  12. 巴金《激流三部曲》高觉新的悲剧命运

  13. 现代简约美式风格在室内家装中的运用

  14. NFC协议物理层的软件实现+文献综述

  15. 高警觉工作人群的元情绪...

  16. 浅析中国古代宗法制度

  17. g-C3N4光催化剂的制备和光催化性能研究

  

About

优尔论文网手机版...

主页:http://www.youerw.com

关闭返回