外文资料翻译--虚拟装配系统基于proengineer应用方面的研究(编辑修改稿)

外文资料翻译--虚拟装配系统基于proengineer应用方面的研究(编辑修改稿)内容摘要：

ideas played a significant role. Virtual assembly (Virtual Assembly) is a digital product definition of an important link in the field of virtual and simulation technology has been widely used in the study. Usually there are two kinds of definition: (1) Virtual assembly is a binding relationship between the part model by the process of repositioning is an effective analysis of product design as a means of rationality. This definition emphasizes the virtual assembly technique is a model of reorientation, the analysis process. (2) virtual assembly design is based on the shape of features, precision features, truly threedimensional simulation of product assembly process, and allows users to interactively control the products of threedimensional simulation of the real assembly process, to test the product for Assembly. In this paper, the characteristics of welding car development, given the following definition: Virtual assembly is a plete product in puter solid modeling of parts and assembly for a puter, interference analysis, coordination of the design process several times to achieve threedimensional product design process and high degree of unity of parts and assembly processes. Virtual Assembly Technology in applied research in mechanical design, is a new design concept, it developed the product provides a new way to design and implementation, and its success depends on the control of the product design process. Meanwhile, the product of the rational flow of parts and ponents model data to share with each other is the basis for virtual assembly technology. Virtual assembly including the design process, process control and assembly simulation of three parts. 2 virtual assembly design and content of basic Designcentric virtual assembly Designcentric virtual assembly (DesignCentered Virtual Assembly) is defined in the product used in threedimensional digital product development process, bined with the specific circumstances of product development, highlighting application of the design as the core ideology, which is reflected in the following three level, shown in Figure 1. Design for assembly (DFA) That early in the design and manufacture of the product design process, the organic bination of the assembly process, from design point of view to ensure the product for Assembly. The introduction of assemblyoriented product design process, make the design of products with good structure and can efficiently carry out the physical assembly, early in product development so that between the design and the manufacturing sectors to work together more effectively. Topdown (Topdown) of the Concurrent Product Design (CPD) Concurrent product design is the product and its related process integration, parallel design, emphasizing the developer from the outset until the disappearance of products from conceptual design throughout the life cycle of all relevant factors, to all the possible errors and early detection of possible conflicts in order to shorten product development cycles, reduce product cost, improve product quality. associated with the Master Model Design for Manufacturing and Design for Assembly Product development is a multisectoral collaborative working process, cooperation between various departments of production of enterprises are often subject to various conditions, limitations, bined with the productive capacity of individual enterprises and production characteristics, improve product design models for manufacturing, for Assembly, model to reduce the number of spare parts and special types, reducing the material type, use of standardized, modular ponents, it is very necessary. Master Model in different stages of the core, can be developed to ensure product integrity at different stages of the same data structures to ensure the products developed by various departments work together to achieve CAD / CAM / CAE system, a high degree of integration, improve product manufacturability and can be assembling. to process control as the center of the virtual assembly To process control as the center of the virtual assembly (ProcessCentered Virtual Assembly) mainly contains the following two aspects. of the product design process control In the digital product definition process, the bination of characteristics of product development, artificially virtual assembly technology used in product design process, the process can be divided into three stages: design stage, the assembly design stage and detailed design stage. Design stage through the three control of the product design process control, and virtual assembly design process. (1) design stage. Design stage is the early stages of product development, at this stage the overall layout of the initial product, including: the establishment of the master model (Master Model) space。 initial product structure, overall system layout. (2) assembly design stage. Assembly design stage of product development the main stage, at this。