Research on Perpendicularity Measurement Technology for Aircraft Skin Fastener Holes

Le résumé fourni par la source

The perpendicularity of aircraft skin connection holes significantly impacts the structural assembly strength and aerodynamic performance of aircraft. High-precision and efficient measurement forms the foundation for controlling hole perpendicularity. To address this, a handheld hole perpendicularity rapid measurement device was designed using three laser displacement sensors, spherical bearings, inner tapered spring sleeves, and other mechanical components. A quantitative analysis was conducted on the effects of sensor installation position/orientation, installation clearance, and workpiece curvature on hole perpendicularity measurement accuracy. A high-precision calibration method based on Kalman filtering algorithm was proposed for non-contact laser displacement sensor positioning and orientation. Comparative experimental results demonstrate that the maximum measurement error of the developed handheld device does not exceed 0.1°, enabling high-precision and efficient measurement of aircraft skin connection hole perpendicularity.

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