Positioning variation synthesis for an automated drilling system in wing assembly |
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| Affiliation: | 1. Institute of Advanced Technology, Zhejiang University, Hangzhou 310027, China;2. School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China;3. Zhejiang Province Key Laboratory of Advanced Manufacturing Technology, Hangzhou 310027, China;4. The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China;1. The State Key Lab of Fluid Power Transmission and Control, School of Mechanical Engineering, Zhejiang University, Hangzhou 310000, China;2. Aviation Industry Corporation of China Xi''an Aircraft Industry (Group) Limited Company, Xi''an, China;1. School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China;2. AB Sandvik Coromant, Stockholm 126 79, Sweden;3. Department of Mechanical Engineering, The University of Auckland, Auckland 1142, New Zealand;4. Department of Production Engineering, KTH Royal Institute of Technology, Stockholm 110 44, Sweden;1. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2. COMAC Shanghai Aircraft Manufacturing Co., Ltd, Shanghai 200436, China |
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| Abstract: | Tight position tolerance is required for fastener holes in wing manufacturing. Automated drilling system with high positioning accuracy is the key to achieve the requirement. The paper seeks to determine allowable values of variation sources and guarantee the hole position tolerance. The process of reference hole positioning and the compensation of drilling positions are firstly explored and formalized for an automated drilling system integrated with an industrial camera. Based on this, a positioning variation model for automated drilling considering positioning error measurement and compensation is built. After that, positioning variation synthesis being imposed engineering constraints on is mathematically modeled based on the theory of mathematical statistics. In the positioning variation synthesis, imperfect camera installation, nonideal measurement conditions, equipment positioning error, etc. are included. The positioning variation model and involving synthesis strategy have been used to develop an automated drilling system for wing assembly. Experiments conducted on the developed drilling system show that the fastener holes’ desired position tolerance 0.3 mm will not be exceeded, which is a necessary condition of the satisfactory drilling quality of the aircraft wing. |
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