30变速箱下盖加工工艺编制及夹具设计[气动]【粗铣前后端面】【钻孔】【说明书+CAD】
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湖 南 科 技 大 学开题报告湖 南 科 技 大 学开题报告学 生 姓 名：程志杰学 生 姓 名：程志杰学院：机电工程学院学院：机电工程学院专业及班级：机械设计制造及其自动化专业及班级：机械设计制造及其自动化学号：学号：1107010105指 导 教 师 ：刘 厚 才指 导 教 师 ：刘 厚 才2015 年年04 月月 14 日日湖南科技大学2011湖南科技大学2011届毕业设计（论文）开题报告届毕业设计（论文）开题报告题目题目30 变速箱下盖加工工艺编制及夹具设计30 变速箱下盖加工工艺编制及夹具设计作者姓名作者姓名程志杰程志杰学号学号11070101051107010105所学专业所学专业机械设计制造及其自动化机械设计制造及其自动化1、 研究的意义，同类研究工作国内外现状、存在问题（列出主要参考文献）1、 研究的意义，同类研究工作国内外现状、存在问题（列出主要参考文献）1.1 研究的意义：现代制造业已经发生质的飞跃，传统生产模式已经不能适应产品更新换代的步伐。为了缩短产品的开发周期，提高生产效率，夹具是机械生产中必不可少的工艺装备。夹具是一种装夹工件的工艺装备，他广泛应用于机械制造过程的切削加工、热处理、装配、焊接和检测等工艺过程中。只有合理的使用夹具才能保证机械零件的加工精度，提高劳动生产率，扩大机床的使用范围，降低生产成本，改善工人的劳动条件。1.1 研究的意义：现代制造业已经发生质的飞跃，传统生产模式已经不能适应产品更新换代的步伐。为了缩短产品的开发周期，提高生产效率，夹具是机械生产中必不可少的工艺装备。夹具是一种装夹工件的工艺装备，他广泛应用于机械制造过程的切削加工、热处理、装配、焊接和检测等工艺过程中。只有合理的使用夹具才能保证机械零件的加工精度，提高劳动生产率，扩大机床的使用范围，降低生产成本，改善工人的劳动条件。1.2 国内外现状1.2 国内外现状1）机械制造工艺设计方法研究现状1）机械制造工艺设计方法研究现状在机械制造过程中，工艺设计是产品制造的准备性阶段。随着科学技术的迅速发展，机械工业产品更新换代的周期大为缩短，新产品不断涌现，市场需求不断变化，多品种，少批量生产已成为现代机械工业的一种日益明显的生产特征。面对这种新的生产形势和市场竞争状况，各生产企业必须努力缩短产品的生产技术准备周期、提高工艺设计的合理性，加速新产品的开发与投放市场，以求的自身的发展和市场竞争的有利地位。机械制造工艺方法已经从传统的手工设计过渡到现代的计算机辅助工艺设计。2）夹具现状研究协会的统计表明，目前中、小批多品种生产的工件品种已占工件种类总数的 85左右。 现代生产要求企业所制造的产品品种经常更新换代， 以适应市场的需求与竞争。 然而，一般企业都仍习惯于大量采用传统的专用夹具，一般在具有中等生产能力的工厂，里约拥有数千甚至近万套专用夹具； 另一方面， 在多品种生产的企业中， 每隔 34 年就要更新 5080左右专用夹具，而夹具的实际磨损量仅为 1020左右。特别是近年来，数控机床、加工中心、成组技术、柔性制造系统、 （FMS）等新加工技术的应用，对机床夹具提出了如下新的要求：（1）能迅速而方便地装备新产品的投产，以缩短生产准备周期，降低生产成本； （2）能装夹一组具有相似性特征的工件； （3）能适用于精密加工的高精度机床夹具； （4）能适用于各种现代化制造技术的新型机床夹具； （5）采用以液压站等为动力源的高效夹紧装置，以进一步减轻劳动强度和提高劳动生产率； （6）提高机床夹具的标准化程度。在机械制造过程中，工艺设计是产品制造的准备性阶段。随着科学技术的迅速发展，机械工业产品更新换代的周期大为缩短，新产品不断涌现，市场需求不断变化，多品种，少批量生产已成为现代机械工业的一种日益明显的生产特征。面对这种新的生产形势和市场竞争状况，各生产企业必须努力缩短产品的生产技术准备周期、提高工艺设计的合理性，加速新产品的开发与投放市场，以求的自身的发展和市场竞争的有利地位。机械制造工艺方法已经从传统的手工设计过渡到现代的计算机辅助工艺设计。2）夹具现状研究协会的统计表明，目前中、小批多品种生产的工件品种已占工件种类总数的 85左右。 现代生产要求企业所制造的产品品种经常更新换代， 以适应市场的需求与竞争。 然而，一般企业都仍习惯于大量采用传统的专用夹具，一般在具有中等生产能力的工厂，里约拥有数千甚至近万套专用夹具； 另一方面， 在多品种生产的企业中， 每隔 34 年就要更新 5080左右专用夹具，而夹具的实际磨损量仅为 1020左右。特别是近年来，数控机床、加工中心、成组技术、柔性制造系统、 （FMS）等新加工技术的应用，对机床夹具提出了如下新的要求：（1）能迅速而方便地装备新产品的投产，以缩短生产准备周期，降低生产成本； （2）能装夹一组具有相似性特征的工件； （3）能适用于精密加工的高精度机床夹具； （4）能适用于各种现代化制造技术的新型机床夹具； （5）采用以液压站等为动力源的高效夹紧装置，以进一步减轻劳动强度和提高劳动生产率； （6）提高机床夹具的标准化程度。2、 研究目标、内容和拟解决的关键问题（根据任务要求进一步具体化）2、 研究目标、内容和拟解决的关键问题（根据任务要求进一步具体化）2.1 研究目标在生产过程中，凡是改变生产对象的的形状、尺寸、位置和性质等，使其成为成品或半成品的过程称为工艺过程。结构相似或要求相同的机器零件，均可以采用多种不同的工艺过程，但其中总有一种工艺过程在某一特定条件下是最合理的。在合理的工艺过程的指导下，人们才能保证机器零件的加工质量，达到设计图样上规定的各项要求，提高生产效率，降低制造2.1 研究目标在生产过程中，凡是改变生产对象的的形状、尺寸、位置和性质等，使其成为成品或半成品的过程称为工艺过程。结构相似或要求相同的机器零件，均可以采用多种不同的工艺过程，但其中总有一种工艺过程在某一特定条件下是最合理的。在合理的工艺过程的指导下，人们才能保证机器零件的加工质量，达到设计图样上规定的各项要求，提高生产效率，降低制造成本，减轻劳动强度，保证生产安全！2.2 内容成本，减轻劳动强度，保证生产安全！2.2 内容（1）分析研究零件图（1）分析研究零件图a 分析加工零件的工艺特点B 分析零件的各项技术要求C 审查零件的加工工艺性a 分析加工零件的工艺特点B 分析零件的各项技术要求C 审查零件的加工工艺性（2）零件的工艺规程编制（2）零件的工艺规程编制a 定位基准的选择，工艺路线的制定B 应用计算法和查表法确定机械加工余量与工序尺寸C 切削用量的确定a 定位基准的选择，工艺路线的制定B 应用计算法和查表法确定机械加工余量与工序尺寸C 切削用量的确定（3）夹具设计（3）夹具设计根据零件结构与工艺性能提出设计方案，然后对方案进行详细的分析，包括原理、尺寸、误差、切削力与夹紧力的分析等等根据零件结构与工艺性能提出设计方案，然后对方案进行详细的分析，包括原理、尺寸、误差、切削力与夹紧力的分析等等（4）绘制夹具装配图（4）绘制夹具装配图（5）编写设计说明书（5）编写设计说明书2.3 拟解决的关键问题2.3 拟解决的关键问题（1）制定变速箱箱体零件的工艺路线（1）制定变速箱箱体零件的工艺路线（2）定位基准的选择，粗基准和精基准的选择原则（2）定位基准的选择，粗基准和精基准的选择原则（3）确定夹具有关尺寸公差和技术要求，进行误差分析（3）确定夹具有关尺寸公差和技术要求，进行误差分析（4）夹具的设计（4）夹具的设计3、 特色与创新之处3、 特色与创新之处本次设计的特色及创新之处在于对变速箱的零件分析，以及制定合理的加工路线，简化制造过程，节省材料，选择合适的夹具是定位更准确，提高产品质量运用计算机本次设计的特色及创新之处在于对变速箱的零件分析，以及制定合理的加工路线，简化制造过程，节省材料，选择合适的夹具是定位更准确，提高产品质量运用计算机4、 拟采取的研究方法、步骤、技术路线4、 拟采取的研究方法、步骤、技术路线4.1 研究方法通过对变速箱和夹具的的相关研究学习， 进行计算分析， 再与老师讨论研究， 通过不断改进、不断思考最后制定方案。4.2 步骤（1）30 变速箱上盖毛坯图；（2）30 变速箱上盖加工工艺卡；（3）2 个工位的夹具设计；4.3 技术路线先进行调查研究，分析变速箱下盖零件图，然后是毛坯的确定、零件结构的加工工艺性、零件的装配工艺性、零件的技术要求分析、零件的工艺规程编制、制定夹具设计方案、绘制夹具图纸，编写说明书。4.1 研究方法通过对变速箱和夹具的的相关研究学习， 进行计算分析， 再与老师讨论研究， 通过不断改进、不断思考最后制定方案。4.2 步骤（1）30 变速箱上盖毛坯图；（2）30 变速箱上盖加工工艺卡；（3）2 个工位的夹具设计；4.3 技术路线先进行调查研究，分析变速箱下盖零件图，然后是毛坯的确定、零件结构的加工工艺性、零件的装配工艺性、零件的技术要求分析、零件的工艺规程编制、制定夹具设计方案、绘制夹具图纸，编写说明书。5、 拟使用的主要设计、分析软件及仪器设备5、 拟使用的主要设计、分析软件及仪器设备主要使用计算机运用二维 CAD 画出图纸进行分析主要使用计算机运用二维 CAD 画出图纸进行分析参考文献1 郭成操，李俊刚主编，机械加工工艺基础，北京：冶金工业出版社.2008.2 王信义，计志孝主编，机械制造工艺学北京：北京理工大学出版社.1989.3 王先奎,机械制造工艺学北京：机械工艺出版社，20064 孙丽媛,机械制造工艺及专用夹具设计指导北京：冶金工业出版社.2002.参考文献1 郭成操，李俊刚主编，机械加工工艺基础，北京：冶金工业出版社.2008.2 王信义，计志孝主编，机械制造工艺学北京：北京理工大学出版社.1989.3 王先奎,机械制造工艺学北京：机械工艺出版社，20064 孙丽媛,机械制造工艺及专用夹具设计指导北京：冶金工业出版社.2002.注：1、开题报告是本科生毕业设计（论文）的一个重要组成部分。学生应根据毕业设计（论文）任务书的要求和文献调研结果，在开始撰写论文之前写出开题报告。2、参考文献按下列格式（A 为期刊，B 为专著）A：序号、作者（外文姓前名后，名缩写，不加缩写点，3 人以上作者只写前 3 人，后用“等”代替。 ） 、题名、期刊名（外文可缩写，不加缩写点）年份、卷号（期号） ：起止页码。B：序号、作者、书名、版次、 （初版不写） 、出版地、出版单位、出版时间、页码。3、表中各项可加附页。湖 南 科 技 大 学英文文献翻译学 生 姓 名： 程志杰 学 院： 机电工程 专业及班级： 机械设计制造及其自动化 学 号： 1107010105 指导教师： 刘厚才 2015 年 05 月 28 日English LiteratureManufacturing is an important pillar of modern national economy and comprehensive national strength, its GDP is generally 20% - 55% of GDP. In the composition of enterprise productivity in a country, the role of manufacturing technology is generally about 60%. Experts believe that the worlds economic competition, mainly manufacturing technology competition. The competitiveness of the product is reflected in the market share of the products. With the rapid development of economic technology and the changing of customer demand and market environment, the competition is becoming fiercer, so the government pays great attention to the research on advanced manufacturing technology.1 manufacturing science to solve the current problemsManufacturing science to solve the current problems mainly in the following aspects:(1) manufacturing system is a complex system, in order to meet the manufacturing system agile, fast response and rapid reorganization of ability must learn from the information science, life science and social science interdisciplinary research, to explore the manufacturing system architecture, manufacturing mode and manufacturing system and effective operation mechanism. The structure and the good running of the manufacturing system are the main targets for the modeling, simulation and optimization of the manufacturing system. Manufacturing system architecture not only on manufacturing enterprise agility and responsiveness to demand and ability to restructure has important significance and of production equipment manufacturing enterprises bottom flexibility and dynamic reconfiguration ability put forward higher requirements. The concept of bio manufacturing is increasingly introduced into the manufacturing system to meet the new requirements of manufacturing system.(2) the sharing of geometric knowledge has become a key problem for the development and manufacturing of products in modern manufacturing technology. For example, computer aided design and manufacturing (CAD / CAM) integrationcoordinates measurements (CMM) and robotics fields in 3D space (3-Real Space), there are geometric algorithm design and analysis a large number of problems, especially the geometric representation, geometric calculation and geometric reasoning in measurement; and robot path planning and parts searching (such as Localization), C- (Configuration space configuration space Space) geometric calculation and geometric reasoning; in the object operation (holding, grasping and assembling) description and robot multifingered grasp planning, motion planning and assembly operations planning is needed in the space of spinors (Screw Space) geometric reasoning. Geometry of the manufacturing process of the phenomenon of physics and mechanics formed a manufacturing science in geometric computing and reasoning the research topic, the theory needs to be further breakthrough, the current a new subject, computer geometry is being increasingly extensive and in-depth research.(3) in the modern manufacturing process, information is not only the decisive factor in the manufacturing industry, but also the most active driving factor. Improving the information processing capability of manufacturing system has become a key point in the development of modern manufacturing science. Because of the multi levels of information organization and structure of manufacturing system, the acquisition, integration and fusion of manufacturing information are multi-dimensional, and information organization is multi-level. In the aspects of the structure model of manufacturing information, the consistency constraint of manufacturing information, the communication processing and the manufacturing knowledge base management of mass data, there are also to be further breakthroughs.Frontier Science 2 Modern Mechanical EngineeringCross fusion between different science will produce new scientific aggregation, economic development and social progress of science and technology has produced new requirements and expectations, thus forming cutting-edge science. Frontier science is the boundary between solutions and unresolved scientific issues. Frontier science has obvious time domain, domain and dynamic characteristic. The important feature of the engineering frontier science is that it covers the key science and technology problems in the engineering practice.Ultrasonic motor, ultra-high speed cutting, green design and manufacturing, etc., has done a lot of research at home and abroad, but the key is the key to mechanical science is still uncertain. Optimizing the performance of large and complex mechanical system in China in the field of design and product innovation design, intelligent structures and systems, intelligent robot and its dynamics, nano tribology, the manufacturing process of 3-D numerical simulation and physical simulation, super precision of micro processing key technology, large and super large precision instrument equipment foundation design and manufacturing, virtual manufacturing and virtual instrument, nanometer measurement and instrumentation, parallel machine tool, micro electromechanical system although has done a lot of research, but there are still many key scientific and technological problems to be solved.Information science, nano science, material science, life science, management science and manufacturing science will change the mainstream science in the 21st century, the resulting high technology and its industry will change the world of appearance. Therefore, and these areas intersect fork development of manufacturing system and information science, nano mechanical and nano manufacturing science, bionic machine and bionic manufacturing, manufacturing management science and reconfigurable manufacturing system is an important frontier science in Mechanical Engineering Science in the 21st century.Material is the milestone of human progress, the basis of manufacturing and high technology development. Each important new material of the successful preparation and application, will promote the material civilization, and promote the national economic strength and military strength. In the 21st century, the world will by the resource consumption industrial economy to knowledge economy, materials and parts with high performance and function, intelligent characteristics of; requirements materials and parts of the design and implementation of quantitative, digital requirements for materials and parts of the preparation of fast, efficient, and realize their integration, integration. The digital design and Simulation of the material and parts are the key to realize the high efficiency and high quality preparation / manufacture of the materials and parts and the integration of the two and the integrated manufacturing. Hand, through the computer complete virtual simulation and optimization can be reduced after the material preparation and parts manufacturing process in the link, to obtain the optimal process scheme, materials and components, the production of high quality / manufacturing; on the other hand, according to requirements of different material properties, such as elastic modulus, thermal expansion coefficient, electromagnetic properties, research materials and parts of the design form. Combined with the traditional removal of material manufacturing technology, increase the material coating technology, and so on, study a variety of material components of the composite forming process technology. Forming materials and parts of the digital manufacturing theory, techniques and methods, such as rapid prototyping by material gradually increased as the principle, breaks through the traditional to material method and the deformation of machining method of the many restrictions, processing process does not require tool or mold, can quickly produce arbitrarily complex shape and has a certain function of three-dimensional entity model or parts.英文文献制造业是现代国民经济和综合国力的重要支柱，其生产总值一般占一个国家国内生产总值的20%55%。在一个国家的企业生产力构成中，制造技术的作用一般占60%左右。专家认为，世界上各个国家经济的竞争，主要是制造技术的竞争。其竞争能力最终体现在所生产的产品的市场占有率上。随着经济技术的高速发展以及顾客需求和市场环境的不断变化，这种竞争日趋激烈，因而各国政府都非常重视对先进制造技术的研究。1当前制造科学要解决的问题当前制造科学要解决的问题主要集中在以下几方面：（1）制造系统是一个复杂的大系统，为满足制造系统敏捷性、快速响应和快速重组的能力，必须借鉴信息科学、生命科学和社会科学等多学科的研究成果，探索制造系统新的体系结构、制造模式和制造系统有效的运行机制。制造系统优化的组织结构和良好的运行状况是制造系统建模、仿真和优化的主要目标。制造系统新的体系结构不仅对制造企业的敏捷性和对需求的响应能力及可重组能力有重要意义，而且对制造企业底层生产设备的柔性和可动态重组能力提出了更高的要求。生物制造观越来越多地被引入制造系统，以满足制造系统新的要求。（2）为支持快速敏捷制造，几何知识的共享已成为制约现代制造技术中产品开发和制造的关键问题。例如在计算机辅助设计与制造(CADCAM)集成、坐标测量(CMM)和机器人学等方面，在三维现实空间(3-RealSpace)中，都存在大量的几何算法设计和分析等问题，特别是其中的几何表示、几何计算和几何推理问题；在测量和机器人路径规划及零件的寻位(如Localization)等方面，存在C-空间(配置空间ConfigurationSpace)的几何计算和几何推理问题；在物体操作(夹持、抓取和装配等)描述和机器人多指抓取规划、装配运动规划和操作规划方面则需要在旋量空间(ScrewSpace)进行几何推理。制造过程中物理和力学现象的几何化研究形成了制造科学中几何计算和几何推理等多方面的研究课题，其理论有待进一步突破，当前一门新学科-计算机几何正在受到日益广泛和深入的研究。（3）在现代制造过程中，信息不仅已成为主宰制造产业的决定性因素，而且还是最活跃的驱动因素。提高制造系统的信息处理能力已成为现代制造科学发展的一个重点。由于制造系统信息组织和结构的多层次性，制造信息的获取、集成与融合呈现出立体性、信息度量的多维性、以及信息组织的多层次性。在制造信息的结构模型、制造信息的一致性约束、传播处理和海量数据的制造知识库管理等方面，都还有待进一步突破。2现代机械工程的前沿科学不同科学之间的交叉融合将产生新的科学聚集，经济的发展和社会的进步对科学技术产生了新的要求和期望，从而形成前沿科学。前沿科学也就是已解决的和未解决的科学问题之间的界域。前沿科学具有明显的时域、领域和动态特性。工程前沿科学区别于一般基础科学的重要特征是它涵盖了工程实际中出现的关键科学技术问题。超声电机、超高速切削、绿色设计与制造等领域，国内外已经做了大量的研究工作，但创新的关键是机械科学问题还不明朗。大型复杂机械系统的性能优化设计和产品创新设计、智能结构和系统、智能机器人及其动力学、纳米摩擦学、制造过程的三维数值模拟和物理模拟、超精度和微细加工关键工艺基础、大型和超大型精密仪器装备的设计和制造基础、虚拟制造和虚拟仪器、纳米测量及仪器、并联轴机床、微型机电系统等领域国内外虽然已做了不少研究，但仍有许多关键科学技术问题有待解决。信息科学、纳米科学、材料科学、生命科学、管理科学和制造科学将是改变21世纪的主流科学，由此产生的高新技术及其产业将改变世界的面貌。因此，与以上领域相交叉发展的制造系统和制造信息学、纳米机械和纳米制造科学、仿生机械和仿生制造学、制造管理科学和可重构制造系统等会是21世纪机械工程科学的重要前沿科学。材料是人类进步的里程碑，是制造业和高技术发展的基础。每一种重要新材料的成功制备和应用，都会推进物质文明，促进国家经济实力和军事实力的增强。21世纪中，世界将由资源消耗型的工业经济向知识经济转变，要求材料和零件具有高的性能以及功能化、智能化的特性；要求材料和零件的设计实现定量化、数字化；要求材料和零件的制备快速、高效并实现二者一体化、集成化。材料和零件的数字化设计与拟实仿真优化是实现材料与零件的高效优质制备制造及二者一体化、集成化制造的关键。一方面，通过计算机完成拟实仿真优化后可以减少材料制备与零件制造过程中的实验性环节，获得最佳的工艺方案，实现材料与零件的高效优质制备制造；另一方面，根据不同材料性能的要求，如弹性模量、热膨胀系数、电磁性能等，研究材料和零件的设计形式。进而结合传统的去除材料式制造技术、增加材料式覆层技术等，研究多种材料组分的复合成形工艺技术。形成材料与零件的数字化制造理论、技术和方法，如快速成形技术采用材料逐渐增长的原理，突破了传统的去材法和变形法机械加工的许多限制，加工过程不需要工具或模具，能迅速制造出任意复杂形状又具有一定功能的三维实体模型或零件。湖南科技大学毕业设计（论文）湖 南 科 技 大 学英文文献翻译学 生 姓 名： 程志杰 学 院： 机电工程 专业及班级： 机械设计制造及其自动化 学 号： 1107010105 指导教师： 刘厚才 2015 年 05 月 28 日English LiteratureManufacturing is an important pillar of modern national economy and comprehensive national strength, its GDP is generally 20% - 55% of GDP. In the composition of enterprise productivity in a country, the role of manufacturing technology is generally about 60%. Experts believe that the worlds economic competition, mainly manufacturing technology competition. The competitiveness of the product is reflected in the market share of the products. With the rapid development of economic technology and the changing of customer demand and market environment, the competition is becoming fiercer, so the government pays great attention to the research on advanced manufacturing technology.1 manufacturing science to solve the current problemsManufacturing science to solve the current problems mainly in the following aspects:(1) manufacturing system is a complex system, in order to meet the manufacturing system agile, fast response and rapid reorganization of ability must learn from the information science, life science and social science interdisciplinary research, to explore the manufacturing system architecture, manufacturing mode and manufacturing system and effective operation mechanism. The structure and the good running of the manufacturing system are the main targets for the modeling, simulation and optimization of the manufacturing system. Manufacturing system architecture not only on manufacturing enterprise agility and responsiveness to demand and ability to restructure has important significance and of production equipment manufacturing enterprises bottom flexibility and dynamic reconfiguration ability put forward higher requirements. The concept of bio manufacturing is increasingly introduced into the manufacturing system to meet the new requirements of manufacturing system.(2) the sharing of geometric knowledge has become a key problem for the development and manufacturing of products in modern manufacturing technology. For example, computer aided design and manufacturing (CAD / CAM) integrationcoordinates measurements (CMM) and robotics fields in 3D space (3-Real Space), there are geometric algorithm design and analysis a large number of problems, especially the geometric representation, geometric calculation and geometric reasoning in measurement; and robot path planning and parts searching (such as Localization), C- (Configuration space configuration space Space) geometric calculation and geometric reasoning; in the object operation (holding, grasping and assembling) description and robot multifingered grasp planning, motion planning and assembly operations planning is needed in the space of spinors (Screw Space) geometric reasoning. Geometry of the manufacturing process of the phenomenon of physics and mechanics formed a manufacturing science in geometric computing and reasoning the research topic, the theory needs to be further breakthrough, the current a new subject, computer geometry is being increasingly extensive and in-depth research.(3) in the modern manufacturing process, information is not only the decisive factor in the manufacturing industry, but also the most active driving factor. Improving the information processing capability of manufacturing system has become a key point in the development of modern manufacturing science. Because of the multi levels of information organization and structure of manufacturing system, the acquisition, integration and fusion of manufacturing information are multi-dimensional, and information organization is multi-level. In the aspects of the structure model of manufacturing information, the consistency constraint of manufacturing information, the communication processing and the manufacturing knowledge base management of mass data, there are also to be further breakthroughs.Frontier Science 2 Modern Mechanical EngineeringCross fusion between different science will produce new scientific aggregation, economic development and social progress of science and technology has produced new requirements and expectations, thus forming cutting-edge science. Frontier science is the boundary between solutions and unresolved scientific issues. Frontier science has obvious time domain, domain and dynamic characteristic. The important feature of the engineering frontier science is that it covers the key science and technology problems in the engineering practice.Ultrasonic motor, ultra-high speed cutting, green design and manufacturing, etc., has done a lot of research at home and abroad, but the key is the key to mechanical science is still uncertain. Optimizing the performance of large and complex mechanical system in China in the field of design and product innovation design, intelligent structures and systems, intelligent robot and its dynamics, nano tribology, the manufacturing process of 3-D numerical simulation and physical simulation, super precision of micro processing key technology, large and super large precision instrument equipment foundation design and manufacturing, virtual manufacturing and virtual instrument, nanometer measurement and instrumentation, parallel machine tool, micro electromechanical system although has done a lot of research, but there are still many key scientific and technological problems to be solved.Information science, nano science, material science, life science, management science and manufacturing science will change the mainstream science in the 21st century, the resulting high technology and its industry will change the world of appearance. Therefore, and these areas intersect fork development of manufacturing system and information science, nano mechanical and nano manufacturing science, bionic machine and bionic manufacturing, manufacturing management science and reconfigurable manufacturing system is an important frontier science in Mechanical Engineering Science in the 21st century.Material is the milestone of human progress, the basis of manufacturing and high technology development. Each important new material of the successful preparation and application, will promote the material civilization, and promote the national economic strength and military strength. In the 21st century, the world will by the resource consumption industrial economy to knowledge economy, materials and parts with high performance and function, intelligent characteristics of; requirements materials and parts of the design and implementation of quantitative, digital requirements for materials and parts of the preparation of fast, efficient, and realize their integration, integration. The digital design and Simulation of the material and parts are the key to realize the high efficiency and high quality preparation / manufacture of the materials and parts and the integration of the two and the integrated manufacturing. Hand, through the computer complete virtual simulation and optimization can be reduced after the material preparation and parts manufacturing process in the link, to obtain the optimal process scheme, materials and components, the production of high quality / manufacturing; on the other hand, according to requirements of different material properties, such as elastic modulus, thermal expansion coefficient, electromagnetic properties, research materials and parts of the design form. Combined with the traditional removal of material manufacturing technology, increase the material coating technology, and so on, study a variety of material components of the composite forming process technology. Forming materials and parts of the digital manufa
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