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題 名 | 逆向工程在快速成型系統上的應用=The Application of Reverse Engineering to Rapid Prototyping System |
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作 者 | 陳燕鴻; | 書刊名 | 中州學報 |
卷 期 | 12 1999.06[民88.06] |
頁 次 | 頁19-30 |
分類號 | 472.22 |
關鍵詞 | 逆向工程; 快速成型; STL; Reverse engineering; Rapid prototyping; Stereo lithography; Surface fitting; Network grid; Laser scan measurement; |
語 文 | 中文(Chinese) |
中文摘要 | 高效率的模具製作方法與軟硬体設備不斷推陳出新,如何將各種昂貴的軟硬体做一整合,以充份發揮其效能,為現今工業界極待解決的重要課題。以正向 CAD 為導向的快速成型 (RP) 系統,已廣泛應用於工業界。大部份 RP 系統係使用 STL 資料格式來輸入實体外形,此外形資料一般是先在 CAD 上建立幾何實体模型,再以眾多的三角形小平面趨近而成。而在逆向工程上,由於掃描量測獲得的為極密之點群資料,若經 CAD 做曲面嵌合後再以三角形平面去趨近且只考慮快速成型之仿削時,此過程似過於繁複,故本文自行撰寫軟体,將鐳射掃描量測獲得之數據,經 X-Y 座標轉換、網格化處理、三角形網格分割、轉換為 STL 格式檔,再由快速成型系統製作成型,中間省卻了 CAD 曲面嵌合的繁雜步驟,此方式提供業界一快速、生動之模具製作方式。 |
英文摘要 | With the availability of high efficient model tool manufacturlng method and hardware facility out in market continuously, the need of how to Integrate various high-priced hardware to fully give rise to productlon effectiveness has become an important issue yet to be resolved. The rapid prototyping (RP) oriented toward the cutting edge CAD direction has widely been applied to industry. The majority of RP system makes use of stereo lithography (STL) for input into outer body. This outer material is, in general, firstly to build on CAD geometrical model form and then to have been composed by many small triangular planes, in reverse engineering, grouped dot material obtained by scanning Is highly condensed. This procedure seems to be tediously costly and unduly complicated at the time of copy cutting with only fast speed formation being considered as with step taken through CAD for surface fitting thereafter and then use triangular planes to incline toward it, therefore, this study proposes that a software be self-developed. Data obtained by laser scan measurement, through x-y coordinate transformation, network grid process, triangular grid separation cut, have been transformed into STL grid file which is then put into the model desired with rapid prototyping system. This process is devoid of CAD surface fitting complicated steps and is provided to potential industry that is interested in manufacturing model tool. |
本系統中英文摘要資訊取自各篇刊載內容。