1、Chapter 3 Manufacturing Systems,Unit 1 Introduction to Manufacturing Systems Unit 2 Advanced Manufacturing Systems Unit 3 Manufacturing Support Systems,计划学时：4学时 教学内容： 3学时，精读，逐句翻译，掌握专业词汇 Unit 1 Introduction to Manufacturing Systems 1学时，泛读，了解文章大意，掌握专业词汇，翻译重点语句 Unit 2 Advanced Manufacturing Systems Uni
2、t 3 Manufacturing Support Systems,教学要求： 了解制造系统的含义，制造系统的各个组成部分 掌握几种典型的制造系统集成组技术、柔性制造系统、敏捷制造等先进制造系统各自应用范围及特点。 了解CAD，CAM，CAPP等辅助制造系统在各种制造系统中的应用。 本章共两次作业（作业5，作业6）,本章专业词汇,conveyor：输送机 hoist：起重机 parts feeder：送料器 coil feeder：卷料进料器 stamp：冲压 automatic pallet changer：自动托盘转换装置 ergonomically：工效学地 job shop produ
3、ction：车间任务型生产 batch production：批量生产 identical:相同的 group technology：成组技术 flexible manufacturing system：柔性制造系统 portray：描绘 coordination：协调 CNC machine tools：计算机数控机床 computerized numerical control malfunction：故障 resharpen：重磨 parameter:参数 geometry：几何形状 cylindrical:圆柱的 prismatic：棱柱的 rectangular：矩形的 cube：立
4、方体 scheme：计划、设计 work-in-process：在制品 sophisticated：复杂的、世故的 exaggeration：夸张 profound：深刻的 infrastructure：基础设施 irrespective：不考虑的 unimpeded:无障碍的,automation:自动化 material handling ：物料搬运 synthesize：综合 integrated equipment：集成设备 raw material：原材料 positioning device：定位装置 semi-automatic：半自动化 full automated：全自动化
5、family：簇 production line:生产线 fixture：固定设备、夹具 hardware：硬件 machine tool：机床 lathe：车床 milling machine：铣床 drill press：钻床 workstation：工作站 portable powered tool：便携式电动工具 assembly line：装配线 machine cell：机器单元 discrete：离散的 ancillary：辅助的、附属的 work unit：工件 mechanized：机械化的 pallet：托盘 tote bin：搬运箱 vicinity：邻近 workhea
6、d：工作台、机台 workholder：工件夹具 orient：定向 clamp:夹住 chuck：卡盘,Unit 1 Introduction to Manufacturing Systems,The Definition of Manufacturing System Components of Manufacturing System Classifications of Manufacturing Systems,Definition of Manufacturing System,We define a manufacturing system to be a collection
7、of integrated equipment and human resources, whose function is to perform one or more processing and/or assembly operations on a starting raw material, part, or set of parts.,Definition of Manufacturing System,The integrated equipment includes production machines and tools, material handling and wor
8、k positioning devices, and computer systems. Human resources are required either full time or periodically to keep the system running.,Components of a Manufacturing System,Production machines Material transport Systems Computer Control System Human Resources,Production machines,Manually operated pro
9、duction machines Semi-automated production machines Fully automated production machines,Material transport System,Three functions: (1)Loading-involves moving the work units into the production machine or processing equipment from a source inside the station. (2)Positioning-provides for the part to b
10、e in a known location and orientation relative to the workhead or tooling that performs the operation.,Material transport System,(3)Unloading- When the production operation has been completed, the work unit must be unloaded, that is, removed from the production machine and either placed in a contain
11、er at the workstation or prepared for transport to the next workstation in the processing sequence.,Computer Control System,Communicate instructions to workers Download part programs to computer-controlled machines Material handling system control Schedule production Failure diagnosis Safety monitor
12、ing Quality control Operations management,Human Resources,Human perform some or all of the value-added work that is accomplished on the parts or products.,Classification of Manufacturing System,Type 1: Single Stations Type 2: Multi-Station Cells Type 3: Production Lines,作业5：,重点语句翻译（把下列语句翻译成中文） We de
13、fine a manufacturing system to be a collection of integrated equipment and human resources, whose function is to perform one or more processing and/or assembly operations on a starting raw material, part, or set of parts. Three of the most important of these are widespread and inexpensive transporta
14、tion systems, communication systems that provide real-time interaction between people in almost any part of the world, and computers that assist in the design, control, and analysis of complex activities.,作业5：,课外翻译（把下列语句翻译成中文） Flexible manufacturing systems (FMS) and computer /communication networks
15、 exemplify complex systems that fall into a class called discrete event stochastic systems (DESS). The efficient design and operation of these systems is extremely important to economic competitiveness, yet system behavior is not completely understood. Present methods of analysis and design of DESS
16、focus on their behavior in the steady state, a conceptualization that requires performance measures to be made “in the long run” or “averaged over time.” Yet,作业5：,most systems exhibit dynamic behavior on their way to (or sometimes even during) the steady state that may produce a deviation in perform
17、ance from that computed by steady state analysis. Design and control of such systems (for example, multiechelon spare parts inventories, integrated manufacturing cells or computer/communication nets) involving explicit consideration of the cost or impact of transient behavior, is now a real possibil
18、ity. 用英文回答下例问题 Recently what makes a manufacturing system change so much? Why?,Unit 2 Advanced Manufacturing Systems,Group Technology (GT) Flexible Manufacturing Systems (FMS) Computer Integrated Manufacturing Systems (CIMS) Lean Production (LP) Agile Manufacturing (AM) E-Manufacturing,Group Technol
19、ogy (GT),Two Major Tasks:(1)Identifying the part families(2)Rearranging production machines into machine cells,Benefits of Group Technology,Promotes standardization Material handling is reduced Process planning and production scheduling are simplified Setup times are reduced Work-in-process is reduc
20、ed Worker satisfaction improves Higher quality work is accomplished,Flexible Manufacturing Systems (FMS),Content of FMS: (1) Process equipment (2) Material handling equipment (3) A communication system (4) A computer control system,Advantages of FMS,(1)Increased productivity (2)Shorter preparation t
21、ime for new products (3)Reduction of inventory parts in the plant (4)Saving of labor cost (5)Improves product quality (6)Attracting skilled people to manufacturing (7)Improved operators safety,Computer Integrated Manufacturing Systems (CIMS),Activities of CIMS: (1)Identifying a need for a product (2
22、)Designing a product to meet the needs (3)Obtaining the raw materials needed to produce the product (4)Applying appropriate processes to transform the raw materials into finished products (5)Transporting products to the market (6)Maintaining the products to endure proper performance in the field,Ben
23、efits of CIMS,(1)Product quality increases (2)Lead times are reduced (3)Direct labor costs are reduced (4)Product development times are reduced (5)Inventories are reduced (6)Overall productivity increases (7)Design quality increased,Lean Production (LP),Ten Rules of LP: (1)Eliminate waste; (2)Minimi
24、ze inventory; (3) Maximize flow; (4) Pull production from customer demand; (5) Meet customer requirements;,Lean Production (LP),Ten Rules of LP: (6) Do it right the first time; (7) Empower workers; (8) Design for rapid changeover; (9) Partner with suppliers; (10) Create a culture of continuous impro
25、vement.,Agile Manufacturing (AM),AM is a New Manufacturing StrategyAM is a Production Mode of the 21st Century,E-Manufacturing,What is E-Manufacturing?What is the Future of E-Manufacturing?,Unit 3 Manufacturing Support Systems,CAD (Computer-Aided Design) CAM (Computer-Aided Manufacturing) CAPP (Comp
26、uter-Aided Process Planning) CAE (Computer-Aided Engineering),作业6：,重点语句翻译（把下列语句翻译成中文） Future FMS will contain many manufacturing cells, each cell consisting of robot serving several computers NC (CNC) machine tools or other standalone systems such as an inspection machine , a welder , an Electron Di
27、scharge Machining (EDM) machine , etc. Instead of devoting resources to planning what would be required for future manufacturing , Toyota focused on reducing system was capable of immediately changing and adapting to market demands. Thats because 3D solid modeling removed the emphasis from using com
28、puter technology to document or capture a design concept and gave engineers a tool that truly helped them create more innovative designs and manufacture higher quality products. Design analysis and knowledge-based engineering ( KBE) applications help manufacturers to refine design concepts by simula
29、ting a products physical behavior in its operating environment and infusing the designers knowledge and expertise into the manufacturing process.,作业6：,课外翻译（把下列语句翻译成中文） Certain computer-based technologies falling within the broad realm of CIM have been sufficiently well developed to merit specific at
30、tention. Most CAD system allow the designer to draw a model of the design by making available a set of primitives. When these designs are subjected to spreadsheet-like “what if” analysis based on engineering equations contained in the software, the essentials of the design can be optimized before the design engineer spends a lot of time getting down into the fine details. 用英文回答下例问题 What is Group Technology (GT) ? And what are the major tasks to application of Group Technology ?,
