面向大裝配復雜CAD模型輕量化技術(shù)
[Abstract]:With the rapid development of modern technology, especially the rapid development of information technology, great changes have taken place in the world's manufacturing industry. The most prominent feature is that the dominant position of technological innovation in enterprise competition is increasingly prominent. With the rapid development of CAD/CAM technology, the whole product design, virtual manufacturing and digital prototype can be completed in the computer, which brings a qualitative leap for the product design, manufacturing and the improvement of the production level of the whole process. While enjoying the achievements of modernization, a problem arises. Nowadays, the design of complex assembly with big data capacity has become an extremely important element in the process of product design. The structure of 3D model is becoming more and more complex, the number of parts and their own characteristics is various, the amount of information carried by them is huge, so the space occupied by them is more and more large. It takes a long time for a computer to load and display only one item, and it is even more difficult to meet the requirement of real-time processing. In view of the fact that there are two ways to solve this problem, one is to improve the ability of computer processing, including the discovery and application of new computer materials, the expansion of hardware space, and the acceleration of the transmission speed of the network. The effect of this approach is visible but has many limitations. In most cases, it still can not meet the real-time processing requirements of the system. The second is the lightweight processing of CAD model, which is also the focus of this paper. 1. Firstly, a lightweight method for large assembly complex CAD model is proposed, which can significantly reduce the file capacity while keeping the appearance and data organization unchanged. It effectively solves the problem of lightweight in engineering field. Under the guidance of this method, the light weight system of complex assembly model is developed on the Visual Studio 2008 platform based on Pro/Toolkit. The main tools Pro/Toolkit and MFC, are given in this paper. The dynamic link library is introduced in detail, and the configuration of Pro/Toolkit in Visual Studio 2008 is also explained. 2. The creative techniques in this paper are as follows: first, component lightweight technology. In order to meet the needs of different users and ensure the consistency of the geometry and topology of the lightweight model with the original design, lightweight processing is carried out on this basis. Second, assembly technology based on lightweight components. The topological information of assembly model is analyzed and extracted, and the assembly of lightweight parts is carried out according to the information. Finally, a lightweight assembly model of the whole machine is generated. 3. The system tool interface and menu are simple and intuitionistic. The function is realized step by modules, and the function is optimized by testing. Finally, the lightweight program of 3D model of complex assembly is developed. The effectiveness and efficiency of the model lightweight method proposed in this paper are verified in reverse by using this tool in multi-group experiments. Lightweight technology for large assembly models can provide great convenience from product designers to final product makers, and greatly reduce the waiting time wasted in the process of product design to production. The difficulty of cooperative communication among enterprises is reduced, and the efficiency of model design and enterprise benefit are improved effectively.
【學位授予單位】:西安電子科技大學
【學位級別】:碩士
【學位授予年份】:2015
【分類號】:TG95;TP391.72
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