整合知識應用之自動化模具設計

在全球化的競爭環境下，產品多變的需求與交期的縮短，是現今射出模具產業所面臨的挑戰，其中要設計出優良的模具，更是必須依靠有經驗的工程師來完成，而隨著電腦軟硬體技術發展快速，CAD/CAM軟體的演進及人工智慧技術的發展，將模具設計/製造的知識與CAD/CAM有效的整合與管理，可成為CAD/CAM技術的一大突破；因此，本研究主要在CAD軟體的架構下，透過二次開發工具，結合知識工程技術，針對產品模型曲面、邊及點的幾何關係，歸納出一套辨識倒勾的演算法且與模具設計整合，自動辨識出倒勾特徵，並產生滑塊及斜銷分模面設計，可減少85%的滑鼠點擊次數，在設計時間上平均可減少80%以上的時間；另一方面，以本體論的資訊技術，建構塑膠射出模具設計/製造流程、技術及產品的知識本體，並記錄相關產品資訊與設計時遇到的問題點，透過模具設計引導流程，達到標準化與知識化，協助模具的設計、製造與試模，累積設計過程中有價值的經驗知識，並提出一知識本體技術架構，未來透過語意推理與引導流程整合，能夠提供精準的歷史資料，以防範不當設計所造成的成本支出；本研究藉由學理化與知識化的整合，引導使用者快速地完成設計，並減少操作上可能產生的錯誤，對模具產業的生產效率，帶來大幅度的提昇與優化。

關鍵字

知識工程；知識管理；特徵辨識；模具設計；引導流程；二次開發

並列摘要

Since the competition has grown globally, nowadays mold enterprises need to meet the requirement of various products and the short manufacturing time. Especially the excellent molds have to be designed by experienced engineers. As the information technology has developed rapidly and the evolution of CAD/CAM software and artificial intelligence, it’s a great breakthrough to integrate and manage the knowledge of mold design and manufacture into CAD/CAM software. Under the framework of CAD software, this study combined knowledge-based engineering (KBE) technology, developed the undercut feature recognition by referring the points, lines and surfaces of product and integrated the mold design process. Once the undercuts are recognized, the process will create the corresponding slides and lifters automatically. The process can reduce 85% mouse-clicking times and save 80% design time, compared with traditional way. Moreover, this study applied ontology framework to create the knowledge ontology of the mold design navigating process, technologies and products, also record the problems happened in design stage. With the mold design navigating process the study can complete the goal of standardization and knowledge-management. The navigating process helps engineers in mold design, manufacture and test stages and accumulates valuable knowledge in the design stage. The study also established an ontology structure, which will integrate with semantic inference, so the process can provide the related cases in historical database to prevent the cost waste because of improper design. Based on the theory and knowledge integration, this study guides the users finish the design quickly and reduce the number of operational errors. Thus, this study will upgrade the efficiency of mold industry greatly.

並列關鍵字

Feature Recognition ； Mold Design ； Knowledge Engineering ； Secondary Development ； Knowledge Management ； Navigating Process

參考文獻

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[3]. Ye, X. G., Fuh, J. Y. H. & Lee, K. S. (2001). A Hybrid Method for Recognition of Undercut Features from Moulded Parts. Computer-Aided Design, 33(14), 1023-1034.

[4]. Ran, J. Q. & Fu, M. W. (2010). Design of Internal Pins in Injection Mold CAD via The Automatic Recognition of Undercut Features. Computer-Aided Design, 42(7), 582-597.

[5]. Bassi, R., Reddy, V. & Bedi, S. (2010). Automatic Recognition of Intersecting Features for Side Core Design in Two-piece Permanent Molds. International Journal of Advanced Manufacturing Technology, 50(5-8), 421-439.

[6]. Kumar, N., Ranjan, R. & Tiwari, M. K. (2007). Recognition of Undercut Features and Parting Surface of Moulded Parts Using Polyhedron Face Adjacency Graph. International Journal of Advanced Manufacturing Technology, 34(1-2), 47-55.

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整合知識應用之自動化模具設計

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