3D-CAD Data Structure Based on Shape Feature for Massive Machinery Models

다국어 초록 (Multilingual Abstract)

In recent years, three-dimensional design with 3D-CAD (three-dimensional computer aided design) systems is being increasingly used in areas such as production facility design and machine tools engineering. In these fields, a machine model with a massive number of parts sometimes needs to be processed in order to design or verify the full assembly of an entire production line.
However, most modern 3D-CAD systems face difficulties in handling such machinery models with a very large number of parts. Therefore, the designers are forced to design the machine using partial models or specific units.
To solve this problem, we have focused on the surface shape of parts constituting the machinery models and clarified that most surfaces have simple shapes. We take advantage of this feature to propose a new data structure that applies simple data structures to simple-shape surfaces rather than a data structure applied to all kinds of surfaces including freeform surfaces. Based on the new data structure, we devise ways and means to speed up the display process. This paper describes these processes.
We are able to handle the data of very massive models such as production facilities or machine tools using our new data structure. Our proposed data structure can provide a design environment that reduces the stress on designers through its high-speed display response.

목차 (Table of Contents)

• Abstract
• 1. Introduction
• 2. Ultra-Light Solid Data Structure
• 3. Display Process
• 4. Implementation and Evaluation
• 5. Conclusion
• References