机械设计毕业论文外文翻译--机械产品方案的现代设计方法及发展趋势

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1、Mechanical products of modern design methodology and the programme trends Summary: According to the current domestic and international product design, mechanical design scholars of the main features of thinking, product design methods summarized as a systematic programme, modular structure, based on

2、 product knowledge and wisdom of the four types. That the four methods of the organic link between features and its proposed product design computer programmes to achieve endeavors. Keyword: mechanical products； Programme design； Trends Introduction With The rapid development of science and technolo

3、gy, the functional requirements of a growing number of products and complexity increase, shortened life expectancy, upgrading speed, the design of the products, particularly machinery products programme design are in urgent need .At present, computer-aided product design drawings, design calculation

4、s, processing manufacturing, production planning has been a relatively broad and in-depth study, but results and product development programme of the early computer-aided design falls far short of the design requirements. To this end, the author read a lot of literature on the basis of summarizing t

5、he design scholars and the methods used for programme design, and discussed ways of the organic link between the computer and mechanical products for programme design trends. Under the current design scholars and mechanical products used in the design of programmes of the main features of methods, t

6、he modern design of the programme approach can be summarized as the following four types: 1. Systematic design methodology The main features of a systematic design methodology: design by several design elements as a system, the independence of each design element, the presence of various elements of

7、 the organic link between each element, and is layered, all elements of the design System design can achieve the required tasks. Systematic design concepts in the 1970s by the German scholar, Professor Paul and Baits, their theoretical system based on the general pattern set design, by design, shoul

8、d be rational. German Engineers in the design concepts on the basis of criteria developed VDI2221 technical system design methodology and product development. Mechanical product development programmer design process model basically follows German standards VDI2221 design. In addition, many of our sc

9、holars in product design and programmer design was cited for the systematic design and other developed countries, including a representative is: (1) The user needs to be functional as a product of conception, design and structural components design, process planning, operational control of the found

10、ation, from the macro-product development process starting, the use of qualitative methods of functional layout, systematic information to users needs rational and effective products into all stages of development objectives and technical control of the operations. (2) See product as the level of pr

11、oduct life systems of organisms, and by systems theory to life the product design process can be divided effectively as demand levels, the achievement of the functional requirements of the specific design and product concept level. At the same time the use of life chart at abstract expression produc

12、ts functional requirements, and form the architecture of the products system. (3) Mechanical design system science applications into two basic issues: First, the design of products as a system to deal with, the best set of its components (modules) and their interrelationship； Second, product design

13、process as a system, according to the design goals, and correctly, reasonably identify the various aspects of the design work and various design stages. Since each of the designers study and consider the perspective of the different focus, programmer design specific research methods are used to exis

14、t. The following are examples of some representative systematic design methods. 1.1 design analysis and guidance system Kaleit with clear graphic description of levels of functional structures and related products abstract information systems achieved structural, functional relations graphics, model

15、ing, and the functional connectivity between the layers. Will be designed into two complementary methods and the exchange of information, analytical methods used Nissans information can be used graphic symbols, a rich semantic model structure, can be described integration conditions, can be divided

16、type, can be achieved in relations between the arbitrary characteristics, design methodology Xie and information technology integration, achieved design process information among different abstract level of relations graphics modeling. Documentation 11 network design will proceed as a design tool in

17、 the development of reactive ask semantic network design, the use of nodes and a network of lines to describe design nodes that components of the module (such as design tasks, functions, components or processing equipment), and lines to adjust the definition of nodes between different semantic relat

18、ions, The design process for all the activities and results of a pre-established models for early design requirements definition to the specific description of each structure can be expressed by the relationship between the definition, computer-aided deplaning process to achieve a leap from abstract

19、 to concrete. 1.2 Linkage chart law Integral components of the system can be divide into a functional energy, energy consumption, changing energy forms, such as various types of energy transmission, and a plan to borrow the functional components express their hope that will be based on a functional

20、model and get a map of achieving functional structure of the automatic generation and functional structure with a map button automatic conversion, Kin seek Hop chart produced by the various design options to law. 2. Structural modular design methodology Planning products from the perspective of: def

21、inition design tasks to the functional structure of products based products have been quoted solution (such as a spare parts components, etc.) to describe the design task of decomposition mandate to consider each sub-task existence counterpart solution of products, so that products can be in the pla

22、nning stage for the elimination of the design tasks that may exist contradictions, Early projections production, costs and the development of the planned revision of the design process, thus increasing design efficiency and the reliability of the design, while also reducing the cost of new products.

23、 Feldman task to design the functions of the product mix is divided into four, (1) products (2) functional composition (3) The main function of components (4) functional components. Feature-oriented applications using structured catalogue of functional components that is more specific qualitative and quantitative description. At the same time developed a design suitable