机械设计专业毕业设计--英汉翻译--机械产品方案的现代设计方法及发展趋势

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1、The modern design method of the project of machinery product and deveolp trend Abstract:Under the current domestic and foreign scholars for mechanical design product design at the main thinking, product program design methods into a system, modular structure, the characteristics of knowledge-based p

2、roducts and intelligent four types. That the four methods and the characteristics of the organic inter-linkages, product design efforts Computer direction Key words:mechanical products； Program design； Trend INTRODUCTION The rapid scientific and technological development, product performance require

3、ments of the growing number and complexity of increased life expectancy shortened. updating speed. However, the design of the products, especially machinery products in the design means, it appears powerless, lags behind the needs of the times. At present, computer-aided product design drawings, des

4、ign, manufacture and production planning has been the subject of extensive and in-depth research and has achieved initial success, and the early stage of product development of computer-aided design program is far from meeting the design requirements. To this end, the author reading a lot of literat

5、ure on the basis of summary of the design and scholars at home and abroad program design methods used in and discussed the various methods of organic link between the product and machinery design computer trend of development. Under the current domestic and foreign scholars for mechanical design pro

6、duct design methodology used in the main feature, The program will be of modern design methods summarized as the following four categories. 1 Systematic Design Systematic design of the main features : design as by a number of design elements of a system, Each element is independence between the vari

7、ous elements of an organic link, and is layered, all combining elements of the design, system design can be realized for the task Systematic design in the 1970s by a German scholar Professor Pahl and Beitz. They system theory as a basis to formulate a general model designed to promote the design of

8、rational should have. German Engineers Association in the design on the basis of formulate standards VDI2221 technology systems and product development design methods. The mechanical product design process model, basically adopted the German standards VDI2221 the design. In addition, Many scholars i

9、n China in product design program design and also quoted from other developed systematic design, which is representative ： (1) The user needs functional characteristics as a product concept, design and structure of parts design, process planning, operational control of the foundation, and the macro-

10、product development process, the use of quality function deployment, System users will demand information reasonably and efficiently converted to the various stages of product development objectives of the technical and operational control in order (2) The level of organisms as products of life, and

11、 the help of life-support systems theory, the product design process can be divided successfully demand levels, realize the concept of functional requirements and the level of product design level. While using the System icon lives abstract expression products to the functional requirements, and for

12、m functional product structure. (3) The mechanical design of science into two basic questions : First, to design the products as a system and to determine the best components (modules) and their mutual relations； Second, the process of product design as a system, based on the design goals, correctly

13、, reasonably ascertain all aspects of design work and the various design stage. As each of the designers to study issues and consider the perspective of the different emphasis program used in the design of the specific research methods, there are also differences. Below introduced some representativ

14、e systematic design methods. 1.1 Design Element Method Used five design elements (functions, effects, effects vector elements and the surface shape parameters) described product solution think of a product design of the five elements value is determined, all the characteristics of the products and e

15、igen value already identified. My design scholars also used a similar method to describe the products original understanding. 1.2 graphical modeling method Developed an analysis and design guidance system KALEIT， with a clear level of graphic description of the product structure and the function of

16、the abstract information, the realization of the structure, function graphical modeling, and the functional link between the layers Will be divided into design methods and supporting information exchange 2, Nijssen Information Analysis using methods can be used graphic symbols, with rich semantic mo

17、del structure, Integration can be described conditions can be classified types of constraints can be achieved between the arbitrary combination of features Will design solutions and information technology integration, and realizing the process of designing different abstraction layers of information

18、 between the graphical modeling. 1.3 idea - design Product design into ideas and design stage two. Concept stage of the mission is to find, select and mix design tasks required to meet the original understanding. Design stage of the work is to realize the conceptual stage, the original understanding.