JIANG Zhe, WEI Haojie, LIU Yang, et al. Parameter extraction and error analysis of countersunk holes based on 3D laser scanning[J]. Aeronautical Manufacturing Technology, 2026, 69(10): 25020262.
JIANG Zhe, WEI Haojie, LIU Yang, et al. Parameter extraction and error analysis of countersunk holes based on 3D laser scanning[J]. Aeronautical Manufacturing Technology, 2026, 69(10): 25020262.DOI: 10.16080/j.issn1671-833x.25020262.
Parameter Extraction and Error Analysis of Countersunk Holes Based on 3D Laser Scanning
Three-dimensional laser scanning enables the rapid acquisition of geometric data for aerospace products
holding significant importance for establishing digital measurement systems within the aerospace industry. To further enhance the inspection capability of 3D laser scanning systems for complex geometric features
this study focused on the extraction of forming parameters for aircraft surface countersunk holes. The measurement system error was analyzed from the perspective of variations in equipment scanning behavior. Initially
the principle of 3D laser measurement and its process workflow were introduced. Subsequently
the impact of scanning behavior on 3D laser measurement accuracy was investigated
and an error model based on least squares fitting was constructed. Then
point cloud reconstruction techniques were employed to extract countersunk hole parameters
while a strategy utilizing a robotic system was developed to extract parameters under varying scanning positions and orientations. Finally
an experimental study involving countersunk hole parameter extraction with variable scanning positions and orientations was designed to analyze the influence of different scanning behaviors on 3D laser measurement accuracy. The experimental results demonstrated that the measurement system error exhibits a bilinear variation with scanning position and orientation
showing good agreement with the established error model. The derived error model can guide the quality inspection of countersunk hole formation in actual production processes and provide a basis for optimizing system performance.
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