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李昌周

李昌周 Li, Chang-Chou

碩士論文 (1996)

塑膠射出成形同步式模具設計系統架構之研發
Studies on Concurrent Mold Design System Framework for Injection Molding

關鍵字 Keywords

模具設計、同步工程、資料工程、知識工程、物件導向模式化、IDEF
mold design、concurrent engineering、data engineering、knowledge engineering、object-oriented modeling、IDEF

摘要

模具設計的良否對淨形產品之開發流程中具有相當重要的影響。傳統之模具設計由於經驗工程師養成不易,且在設計時與產品設計、製程設計及製程規劃間,無法有效的溝通協調所造成的錯誤,使模具設計成為耗費人力、物力、時間及資源的生產瓶頸。近年來,透過同步工程的概念,可在設計初期考慮並解決產品開發流程中的相關問題,以提高產品及製程發展的品質與效率,因此透過此一概念來幫助模具設計、解決傳統缺失,為研究上的一個關鍵技術。 本研究主要目的在建立一系統化同步式之模具開發模式,並依此提出一個能將產品設計、製程設計及模具製程規劃等程序加以考慮之同步式電腦輔助模具設計系統架構。並在此一架構下從事相關知識庫系統之研發,以幫助模具開發之合理化、系統化與同步化,並加速達成自動化之目標,進而提昇模具設計之效率與品質、降低成本。

透過IDEF技術,本研究以結構化系統分析方法,針對模具開發程序研究各設計階段的工作特性與相關性,再以同步工程之概念及系統工程技術建立一系統化、同步式開發模式,進而建立一同步式電腦輔助模具設計系統架構。根據產品生命週期之整體考慮,本研究針對模具設計需求依資料工程的技術建立設計過程中所需的資料庫,並由物件導向技術及知識工程方法考量產品開發流程發展一協同式模具設計知識庫,進而增加模具設計之完整性。

Abstract

Mold design plays one of the key roles in net shape product and process development. Conventionally, it performed by experienced designer without sufficient communication with product designers, mold manufacturing process planners and mold fabrication  engineers. This leads to the high cost, long development time and inconsistent quality of mold design. In resent years, the concept of  concurrent engineering has been widely employed to improve product and process development efficiency and quality by resolving all product life cycle issue at the early design stage. However, how concurrent engineering can help in mold development is still a research issue. The objective of this research is to facilitate the rationalization, concurrentization and automation of mold development process and thus improve the efficiency and quality, and reduce the cost of mold development by: (1) developing a systematic and concurrent mold development model, (2) developing a computer-based mold design framework based on the model, that concurrently takes issues of product design, process design and mold fabrication into consideration, and (3) developing knowledge bases to assist concurrent type of mold design. IDEF structural analysis methodology was employed to investigate the characteristics of mold development process. The concepts of concurrent engineering and the technology of system engineering were used to develop the computer-based concurrent mold design framework. In consideration of other molding product and process development activities, databases and knowledge bases for mold design were developed using technologies of data engineering, knowledge engineering, and object-oriented modeling.