制造專業(yè)畢業(yè)設(shè)計外文翻譯--柔性制造系統(tǒng)的發(fā)展運用在實際制造中的范例

1、 Development of Flexible Manufacturing System using Virtual Manufacturing ParadigmSung-Chung Kim* and Kyung-Hyun ChoiSchool of mechanical engineering, Chungbuk National University, Cheongju, South Korea, School of mechan

2、ical engineering, Cheju National University, Cheju, South KoreaABSTRACTThe importance of Virtual Manufacturing System is increasing in the area of developing new manufacturing processes, implementing automated workcells,

3、 designing plant facility layouts and workplace ergonomics. Virtual manufacturing system is a computer system that can generate the same information about manufacturing system structure, states, and behaviors as is obse

4、rved in a real manufacturing. In this research, a virtual manufacturing system for flexible manufacturing cells (VFMC), (which is a useful tool for building Computer Integrated Manufacturing (CIM),) has been developed us

5、ing object-oriented paradigm, and implemented with software QUEST/IGRIP. Three object models used in the system are the product model, the facility model, and the process model. The concrete behaviors of a flexible manu

6、facturing cell are represented by the task-oriented description diagram, TID. An example simulation is executed to evaluate applicability of the developed models, and to prove the potential value of virtual manufacturing

7、 paradigm.Key Words : FMS, virtual manufacturing system, CIM, object-oriented paradigm, TID22. Concept of virtual manufacturing Virtual Manufacturing System is a computer model that represents the precise and whole str

8、ucture of manufacturing systems and simulates their physical and logical behavior in operation, as well as interacting with the real manufacturing system. Its concept is specified as the model of present or future manuf

9、acturing systems with all products, processes, and control data. Before information and control data are used in the real system, their verification is performed within virtual manufacturing environment. In addition, i

10、ts status and information is fed back to the virtual system from the real system. Virtual environments will provide visualization technology for virtual manufacturing. The virtual prototype is an essential component in t

11、he virtual product life cycle, while the virtual factory caters for operations needed for fabricating products. Therefore, the developments in the area of virtual prototyping and virtual factory will enhance the capabil

12、ities of virtual manufacturing.The major benefit of a virtual manufacturing is that physical system components (such as equipment and materials) as well as conceptual system compvonents (e.g., process plans and equipment

13、 schedules) can be easily represented through the creation of virtual manufacturing entities that emulate their structure and function. These entities can be added to or removed from the virtual plant as necessary with

14、minimal impact on other system data. The software entities of the virtual factory have a high correspondence with real system components, thereby lending validity to simulations carried out in the virtual system meant t

15、o aid decision-makers in the real system. For virtual manufacturing, three major paradigms have been proposed, such as Design- centered VM, Production-centered VM, and Control- centered VM. The design-centered VM provide

16、s an environment for designers to design products and to evaluate the manufacturability and affordability of products. The results of design-centered VM include the product model, cost estimate, and so forth. Thus, pote

17、ntial problems with the design can be identified and its merit can be estimated. In order to maintain the manufacturing proficiency without actual building products, production-centered VM provides an environment for g

18、enerating process plans and production plans, for planning resource requirements (new equipment purchase, etc.), and for evaluating these plans. This can provide more accurate cost information and schedules for product

19、 delivery. By providing the capability to simulate actual production, control-centered VMoffers the environment for engineers to evaluate new or revised product designs with respect to shop floor related activities. Con

20、trol-centered VM provides information for optimizing manufacturing processes and improving manufacturing systems. The virtual manufacturing approach in this paper is close to Control-centered VM. Fig.1 illustrates the

21、 viewpoint of the functional model of the virtual flexible manufacturing cell. Since the activity Execute real manufacturing systems depicts a model of real factory, it possibly replaces real factory. All manufacturing