Slicing Recognition of Aircraft Integral Panel Generalized Pocket

To automatically obtain a machining area in numerical control (NC) programming, a data model of generalized pocket is estab-lished by analyzing aireraft integral panel characteristics, and a feature recognition approach is proposed. First, by reference to the prao- tieal slice-machining process of an aircraft integral panel, both the part and the blank are sliced in the Z-axis direction; hence a feature profile is created acceding to the slicing planes and the contours are formed by the intersection of the slicing planes with the part and its blanK. Second, the auxiliary features of the generalized pocket are also determined based on the face type and the position, to correct the profile of the pocket. Finally, the generalized pocket feature relationship tree is constructed by matching the vertical relationships among the features. Machining feature information produced by using this method can be directly used to calculate the cutter path. The validity and practicability of the method is verified by NC programming for aircraft panels.

作 者： Yu Fangfang Du Baorui Ren Wenjie Zheng Guolei Chu Hongzhen   作者單位： Yu Fangfang(School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;Department of Mechanical Engineering, Beijing Armored Force Engineering Institute, Beijing 100072, China)

Du Baorui,Chu Hongzhen(Shenyang Aircraft Co. Ltd, Shenyang 110034, China)

Ren Wenjie(Beijing Zhongke Fulong Computer Technology Co. Ltd, Beijing 100085, China)

Zheng Guolei(School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China) 

刊 名： 中國航空學報（英文版）  ISTIC 英文刊名： CHINESE JOURNAL OF AERONAUTICS  年，卷(期)： 2008 21(6)  分類號： V2  關鍵詞： numerical control   aircraft integral panel   feature extraction   computer aided manufacturing  

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