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.

机翼制造中的紧固件孔需要严格的位置公差。具有高定位精度的自动钻孔系统是达到要求的关键。本文力求确定变化源的允许值并保证孔位置公差。首先探讨并确定了与工业相机集成的自动钻孔系统的基准孔定位和钻孔位置补偿的过程。基于此，建立了考虑定位误差测量和补偿的自动钻孔定位变化模型。之后，基于数理统计理论对受工程约束的位置变化综合进行数学建模。在定位变化综合中，摄像头安装不完善，包括非理想的测量条件，设备定位误差等。定位变化模型和涉及综合策略已被用于开发用于机翼组件的自动钻井系统。在开发的钻井系统上进行的实验表明，紧固件孔的期望位置公差不会超过0.3毫米，这是使飞机机翼获得令人满意的钻井质量的必要条件。