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題名 | Extraction of Machined Features From Two Dimensional Orthographic Drawings=平面圖中機械特性之截取 |
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作者 | 田方治; 鄭純媛; | 書刊名 | 朝陽學報 |
卷期 | 2 1997.06[民86.06] |
頁次 | 頁15-23 |
分類號 | 448.945 |
關鍵詞 | 電腦輔助製程; 電腦輔助設計/製造; 特性截取; CAPP; Feature extraction; CAD/CAM; DXF; |
語文 | 中文(Chinese) |
中文摘要 | 在生產自動化中,電腦輔助設計(CAD)和電腦輔助製造(CAM)的整合是一項重要的 工作,它不但是生產自動化的跳板,也能夠顯注的降低生產之成本。為了達成這個目標,在 電腦輔助設計 (CAD) 系統中,截取幾何特性是一個值得探討的課題。 尤其,在早期有許多 的製圖是以平面三視圖所畫成的,所以把這些原有的設計直接轉換成製造的程序,成為一個 重要的問題。本文的目的在藉由傳統的平面三視投影圖,發展一個 CAD 和 CAM 的界面,其 中包括發展啟發式的方法來截取幾何的特性, 和解決在平面圖中形無法判斷的問題 (Ambiguous Problem),並且建立一個初期的模俞,以作為未來之發展。 |
英文摘要 | The interface of Computer-Aided Design (CAD) to Computer Aided Manufacturing (CAM) is a crucial step in automated manufacturing. It acts as aspringboard between them and reduces the cost of production dramatically. In order to reach this objective, feature extraction seems to be a worthwhile topic to study. Especially, many drawings were originally made in a two-dimensional drafting, so converting those old drawings to processing planning's will be an interesting topic to solve. the objective of this paper is to develop an interface to connect the CAD and CAM by means of the traditional twodimensional meceehanical drawings. In this study, a heuristic algorithm of twodimensional pre-defined featuraction is developed. In addition, the methods of solving the ambiguous features are proposed to satisfy the special machining operations. A prototyped system is built based on the AutoCAD system and is validated by a number of case studies. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。