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  • 學位論文

以CAE分析輔助之引導式卡勾設計

Navigated Hook Design with CAE Analysis

指導教授 : 鍾文仁

摘要


隨著全球經濟及產業的快速發展,各個企業之間競爭激烈,使產品生命週期減短,為了滿足顧客的需求,企業需要不斷開發新穎的產品,隨著產品的變化,內部空間規劃及機構樣式不同,或因設計者設計方式不同,常導致在產品上建立多餘的機構,增加設計錯誤率,造成產品組裝困難,耗費過多組裝時間。 本研究利用CAD軟體與網路技術的應用,建立一套機構設計引導系統,以標準化的流程指引設計者完成機構設計,以往在設計時未考慮到機構數量對結構強度之影響,常導致後續產生建立多於機構或產品扣合力不足等設計錯誤,在CAD與CAE之間耗費過多時間,因此,引導流程中包含智能化的機構設計建議,以減少內部機構數量,同時兼顧產品結構強度,使產品設計在最短的時間內完成。此系統導入由上而下的設計概念,將機構樣式標準化及參數化,在設計初期階段就考慮到組裝配置以及後續組裝的問題,設計者提供產品外觀規格,依據所選擇之組裝方向,在設計過程中結合公式進行計算,分析機構可承受應力值,評估建立上所需之數量及尺寸,提高結構強度與可靠度,以最少機構數量使產品內機構佈局得到最佳化,有效提升組裝效率,此外,系統具有可以讓設計者參考並應用之特點,節省後續設計變更次數,達到簡化機構數量,降低模具製造成本,提高設計效率和品質之目的。

並列摘要


With the rapid development of the global economy and the industry, intense competition among various enterprises,so that shorten product life cycle. In order to meet customer demand, companies need to constantly develop innovative products. Along with product changes, interior space planning and mechanism would be different because of different designer or design methods.That often leading to the unnecessary mechanism, resulting in increasing the difficulty and the time of assembly. In this study, CAD software and network technology are applied for establishing a mechanism design navigating process. Using a standardized process for designers to complete mechanical design. If the design did not take the numbers of mechanism into account on the structural strength, the produce may end up with lacking holding force or other design errors, spending too much time between CAD and CAE software. Therefore, the navigating process contains intelligent suggestions for mechanism design to reduce the number of internal mechanism, as well as taking the structural strength into consideration so that the product design can be completed in the shortest possible time. This system uses the top-down design concept to standardize and parameter the types of mechanism. At the early design stage the process take assembling issue into account by product appearance specification. According to the direction of assembly, the system would sum up the withstand stress and estimate the possible number and size to improve the structural strength and reliability. Making the minimum number of mechanism to optimize the internal mechanism so that assembly efficiency would be upgraded. In addition, the system allows the designer to have a reference of the characteristics and applications, reducing the design changes. The study could reduce manufacturing costs and improve design efficiency and quality.

參考文獻


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