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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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】,气动,粗铣前后端面,钻孔,30,变速箱,加工,工艺,编制,夹具,设计,前后,端面,说明书,CAD
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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 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
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