魅族手机后盖外壳的注射模具设计-塑料侧抽芯注塑模开题报告.doc
魅族手机后盖外壳的注射模具设计-塑料侧抽芯注塑模含NX三维及15张CAD图.zip
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外文文献01In modern society, mold manufacturing industry in China account for a large proportion, according to statistics, in 2000, which is almost one billion in 37, but the market demand is growing mold. According to the present case, society has not satisfied the previous low precision, low-quality, short life, super-simple mold, and it is often in the opposite direction to its development. And his annual growing demand. Now, Chinas home appliance industry, its market share is quite large, such as home TV, air conditioning, refrigerator, telephone, etc., are associated with it. The rapid development of home appliance industry, because of its ability to automate the production, improve production efficiency, but also the liberation of a large amount of labor. Other industries such as telecommunications, construction, electronics and information industry will play an increasingly significant role, the demand for the mold industry is also growing, production and technical fields will produce enormous.外文文献02 Types of development to the hot runner mold, mold and adapt to the high-pressure gas-assisted injection molding process direction Mold hot runner technology can improve productivity and quality parts, and can produce significant savings in raw materials, many foreign plastic mold factory produced more than 50% of plastic molds with a hot runner technology, and some have reached more than 80% the effect is very obvious; gas-assisted injection molding injection pressure is low, warpage, good surface quality and ease of forming the thickness difference advantages of larger products available in the premise of ensuring product quality, significantly reduce costs; high-pressure injection molding resin shrinkage can be forced to increase the size of the stability of the plastic pieces; another injection compression molding technology that enables small local internal strain formed parts, to get a small walled craters formed parts, and plastic parts for the narrow parts can also be injected into the resin, and used a small injection force to get good products, promote the use of these technologies are gradually.外文文献03Mold industry influence in the world is enormous, which is known as the cornerstone of Americas most important industries; in Europe is to be given a higher value is more expensive than gold, there is nothing that can be shaped golden point. We can see the charm of the mold industry, although it is a basic industry, but the value can not be underestimated. Also it is a high-tech industries. Further, in the mold industry, substantially occupies the half-stamping dies, plastic molds, and then, almost one third of the remainder of the casting mold, close to 6%, and finally the other of the remaining 9%.Affect the development of the mold industry favorable and unfavorable factors1. favorable factor1） National industrial policy to actively promote the industry continues to grow Manufacturing industry is a pillar industry of the national economy, the mold industry as an important supporting modern precision manufacturing industry, and its development has always been national attention. In recent years, central and local government has issued a series of industrial policies and long-term development plan to support the industry bigger and stronger.According since January 1, 2013 by the Ministry of Finance, the National Development and Reform Commission, General Administration of Customs, State Administration of Taxation jointly issued the beginning of the implementation of the domestic investment projects are not duty-free imported goods catalog (2012 adjustment), will be part of the mold adjustment to import duty-free imported goods catalog not the specific policies for the domestic mold to provide a more favorable competitive environment conducive to industrial upgrading and technological progress mold industry. 2） Huge market capacity, and the development trend is clearlyUse of plastic per capita is only one-third of the developed countries, growth in space is very obvious. The rapid development of the plastics industry, the rapid development of plastic mold must be as a support.3） Chinas plastic mold industry after years of self-accumulation and the introduction, absorption then innovation, has reserves of some technical foundation. Currently, the industry of precision, large-scale and complex mold products increased significantly, part of the main indicators of the leading enterprise products has reached world-class level. Mold industry backbone enterprises have gradually implement high-speed processing, concurrent engineering, reverse engineering, virtual manufacturing, no map production and standardization of advanced production technology and processes for the development of the industry and establish a good demonstration effect. Twelfth Five-Year period, Chinas mold industry will focus on a series of breakthroughs in advanced industries, cutting-edge technology, supporting domestic automotive, appliance and other core components of the hosting industry and lay a solid foundation.4） International center console and supporting industries continued to transfer to ChinaClosely related to the development of its downstream industries mold industry. In recent years, the trend of economic globalization has become more evident, the global automotive, appliance and other console makers and parts supporting enterprises in order to reduce costs, have manufacturing operations will transfer to China. This is one of the foundations for the development of the industry as a mold manufacturing industry provides a good external environment. For domestic mold companies, on the one hand is a among the international market, has become a good opportunity for a global supplier of mold, you can get more market opportunities; on the other hand, the global industrial center mold transfer to China will help Chinese enterprises to digest absorbing foreign advanced technology, products, and thus narrow the gap with the advanced level.2 Unfavorable factors1） Chain is still not perfect To die at the core of the industry chain collaborative development is not enough, especially in the mold material development lags behind most obvious. Mold material impact on the quality of the larger mold, mold-made material for a long time, whether from the variety, quality and quantity can not meet industry needs, almost all high-grade mold and the mold material exports rely on imports. In addition, various types of equipment upstream mold (machine tools, workholding cutting tool, testing, heat treatment equipment, etc.) and the means of production (software, accessories, wear and tear parts, etc.) as well as molding materials (plastics, rubber, sheet metal, metal and nonmetal and composite materials, etc.) and forming equipment (rubber molding equipment, stamping equipment, casting and forging equipment, etc.) and so rely heavily on imports, limiting the rapid development of the mold industry. 2）Generally small scale enterprisesPlastic mold products less common, professional, segmentation is very obvious characteristics, resulting in a smaller average size of mold companies, in response to raw material price fluctuations, customer changes, as well as to participate in international competition in the market at a disadvantage. Chinas mold industry bigger and stronger, not only need to get in the end to break the mold development to achieve an alternative to imported products, also called small and medium enterprises on the basis of plastic mold to focus on the development of mold on providing customers with injection molding processing ancillary services, and diversify sources of income and the size of the business operations. 3)The level of manufacturing mold development gap with the developed countries, the lack of technical personnel Chinas plastic mold industry has long been in imitation of foreign advanced products, mold manufacturing and development at the level of foreign mold there is a considerable gap between the accuracy of the life and times of test mode on aspects such as technology. Meanwhile, Chinas mold industry, academic leaders based on common and cutting-edge technology, as well as application-oriented, skilled industrial workers are relatively scarce, bigger and stronger for the industry caused some obstacles.影响模具行业发展的有利和不利因素 1、有利因素（1） 国家积极产业政策推动行业持续成长 制造业是我国国民经济的支柱性产业，模具行业作为现代精密制造的重要配套产业，其发展历来受到国家重视。近年来中央和地方政府先后颁布了一系列产业政策和中长期发展规划，支持本行业做大做强。 根据2013年1月1日起开始执行的由财政部、国家发展改革委、海关总署、国家税务总局联合发布的国内投资项目不予免税的进口商品目录（2012年调整），将部分进口模具调整至不予免税的进口商品目录，该专项政策为国产模具提供了更为有利的竞争环境，有利于模具行业的产业升级和技术进步。 （2）市场容量巨大，且发展趋势明显 我国人均塑料使用量仅为发达国家的1/3，增长空间十分明显。塑料制品行业的迅速发展，必须以塑料模具的快速发展作为支撑。 （3）行业技术持续进步 我国塑料模具行业经过多年的自主积累和引进、吸收后再创新，已经储备了一定的技术基础。目前，行业内精密、大型和复合模具产品明显增多，部分领先企业产品的主要指标已经达到国际一流水平。模具行业骨干企业也逐步实施高速加工、并行工程、逆向工程、虚拟制造、无图生产和标准化生产等先进技术和工艺，为行业发展树立了良好的示范效应。十二五时期，我国模具行业将着重突破一系列行业先进、前沿技术，为汽车、家电等主机行业核心零部件的国内配套打下坚实的基础。 （4）国际主机及配套产业重心持续向我国转移 模具产业的发展与其下游产业密切相关。近年来经济全球化的趋势日趋明显，全球汽车、家电等主机厂商及其零部件配套企业为了降低成本，纷纷将制造业务向我国转移。这为作为制造业基础产业之一的模具产业的发展提供了良好的外部环境。对于国内模具企业来说，一方面是一个跻身国际市场、成为全球性模具供应商的良好契机，可以获取更多的市场机会；另一方面，全球模具产业中心向我国转移，有利于我国企业消化、吸收国外的先进技术、产品，从而缩小与先进水平的差距。 2、不利因素 （1）产业链仍不够完善 我国以模具为核心的产业链各个环节协同发展不够，尤以模具材料发展滞后最为明显。模具材料对模具质量影响较大，国产模具材料长期以来，不论从品种、质量还是数量上都不能满足行业需要，高档模具和出口模具的材料几乎全部依靠进口。此外，模具上游的各种装备（机床、工夹量刃具、检测、热处理设备等）和生产手段（软件、辅料、损耗件等）以及成形材料（各种塑料、橡胶、板材、金属与非金属及复合材料等）和成形装备（橡塑成形设备、冲压设备、铸锻设备等）等都大量依赖进口，限制了模具行业的快速发展。 （2）企业规模普遍较小 塑料模具产品通用性较低，专业化、细分化特点十分明显，造成了我国模具企业平均规模偏小，在应对原材料价格波动、客户变动，以及参与国际市场竞争方面处于不利地位。我国模具行业要做大做强，不仅需要在中高端模具开发方面取得突破，实现对进口产品的替代，还要求中小型塑料模具企业在专注于模具开发的基础上，为客户提供注塑件加工等配套服务，实现收入来源多元化和企业的规模化经营。 （3）模具开发制造水平与发达国家存在差距，技术人才匮乏 我国塑料模具行业长期以来以模仿国外先进产品为主，在模具制造精度、使用寿命以及工艺上的试模次数等方面与国外模具的开发水平还有相当大的差距。同时，我国模具行业基础、共性和前沿性技术的学科带头人，以及应用型、技能型产业工人都较为紧缺，为行业的做大做强造成了一定的障碍China mold development proposals Chinas sustained rapid economic development, the development of mold industry has provided a broad space. Mold industry in the future development, we must first pay more attention to its strategic adjustment of product structure, so that the structure of complex, high-precision high-grade die faster development. Our mold industry to Jinjindegen market demand to develop. There is no demand for the product, product upgrading, there is no technological progress mold industry, there is no product on the scale of the mold, on the grade. Such as automobile production in more than 90% of the parts, must rely mold forming in the Pearl River Delta and Yangtze River Delta, for the automotive industry, supporting the mold output growth of around 40%. The technical level of the mold, to a large extent determine the quality, efficiency and product development capabilities of new products. Has become the measure of a countrys manufacturing an important indicator of the level.Secondly, we should actively promote the development of the central and western regions of the mold industry, efforts to narrow the gap between the developed and underdeveloped regions. Many western regions have realized the important role of the development of mold manufacturing industry. Such as Shaanxi, Sichuan, Hebei and other mold manufacturing enterprises of production scale, technical level has been greatly developed, Hebei Xing Lin Body Manufacturing Group Co., Ltd. as the backbone enterprises in Hebei Botou region led to a pioneering mold companies; Sichuan Yibin Pashtoon Mould Co., Ltd. With a strong capital investment, will write a new chapter in the future.III. To actively promote institutional innovation mold enterprises, especially state-owned enterprises, change their operational mechanism, vigorously develop a mixed ownership economy, clear property rights and improve the corporate governance structure. Fully exploit the inherent power of enterprise development. To actively promote the manufacturing industry in the western region of the industrial base better separation of major and medium-sized enterprises to mold shop, factory in not too long a time, using a variety of effective forms and mechanisms, to develop property rights , independent management, operation and mold production to meet the markets rapid response modern professional mold enterprises, training to represent the industry standard of leading enterprises, promote the development of regional industrial chain. IV. Led by IT and manufacturing technology to enhance the level of mold industry, mold industry is to promote technological progress in the key. Application, the application of rapid prototyping technology CAD / CAE / CAM technology in the mold industry, mold design and manufacturing technology has undergone major changes. Furthermore, the development and improve the level of mold manufacturing, also depends on the efficient use of CNC precision machining equipment, such as 5-axis machining, high speed milling. Superfinishing also means a lot for mold, the current focus on the direction of mold processing technology is no map production, single-precision parallel processing, less humanized or unmanned machining and implement the principle of only a small repair equipment such as unworthy . Reverse engineering, concurrent engineering, agile manufacturing, virtual technology, advanced manufacturing technology in the mold industry has also been popular. With Chinas accession to the WTO, the development of global economic integration, the system is bound to Chinas traditional industries have a huge impact. We must reform the traditional mode of operation to adapt to the market. To participate in international competition, we must with international standards in the form of exchange of information
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