3차원 CAD 시스템을 이용한 설계환경 구축 및 설계자동화에 대한 연구

Abstract

In order to survive among worldwide competition, today’s industries are experiencing strong pressure to introduce higher quality products with a lower cost and a shorter lead-time. Therefore, the role of design in the process of product development is increasing in significance. In this research, two methods for improving the design capacity are proposed: construction of design environment and design automation using 3D CAD system. With 3D CAD system, the designer and the design process are the core of product design. Thus, to maximize the design performance, the design environment, including the selection of a suitable system, designer training for a practical use of the system, the establishment of an efficient design process, and the stabilization of the environment all have to be supported. A method is suggested to construct design environment by systematizing the contents of the projects and consulting, as carried out under various categories of business such as electronic devices, motorcycles, electricity parts, sanitary wares, injection molds, and die casings. Design automation helps shorten the time and improve the quality by automating tedious and time-consuming jobs and simplifying complicated and difficult modeling or drawing work. To develop a design automation system, besides the general methodology for system development, the additional procedures to understand the process and the related knowledge of the design and to implement the system using API provided by 3D CAD system are necessary. In this research, a special-purpose method composed of eight steps is proposed for the development of a design automation system. These eight steps are needs analysis, specification decision, specification verification using 3D CAD system, inspection of related API functions, programming, field test, application in practice, and maintenance. A case study in which five design automation systems in the design of turbine generators using the proposed method is introduced in detail. These systems play important roles in the generation of various output items including 3D models, drafts, material information, and NC data. The case study highlights how effectively the design time is reduced and the quality improved using those systems.