Optics and Precision Engineering, Volume. 33, Issue 4, 557(2025)
Measurement method for internal error of rotary parts using industrial CT images
Figures & Tables(17)
Fig. 1. Calculation procedure for internal errors of rotational components
Table 1. Comparison of segmentation performance
View tableView in ArticleTable 1. Comparison of segmentation performance
方法 准确率 精确率 分割质量 RFRG 90.79 98.32 94.41 RG 70.47 78.57 73.33 RANSAC 84.67 94.45 89.29 文献［ 20 ］80.72 95.86 87.64
Table 2. Comparison of point cloud segmentation accuracy
View tableView in ArticleTable 2. Comparison of point cloud segmentation accuracy
方法 最大值/μm 平均值/μm 方差/μm2 RFRG 1.3 0.1 0.016 RG 3.1 0.7 0.083 RANSAC 1.8 0.1 0.017 文献［ 20 ］2.1 0.2 0.021
Table 3. Comparison of surface reconstruction accuracy
View tableView in ArticleTable 3. Comparison of surface reconstruction accuracy
试件锥角 方法 平均值/μm 方差/μm2 60º L-M 2.1 0.268 RANSAC 2.1 0.270 90º L-M 3.3 0.405 RANSAC 3.2 0.408 120º L-M 2.2 0.283 RANSAC 2.2 0.283
Table 4. Comparison of cone angle measurement results
View tableView in ArticleTable 4. Comparison of cone angle measurement results
试件锥角 本文算法 三坐标测量值 差值 60º 60.00 60.05 0.05 90º 89.86 89.92 -0.06 120º 119.83 119.86 0.03
Table 5. Measurement results of form and position errors
View tableView in ArticleTable 5. Measurement results of form and position errors
测试曲面 基准曲面 测量
项目
本文
算法
VG 三坐标 d - 圆柱度 0.021 7 0.020 0 0.027 6 e f 同轴度 0.022 4 0.018 5 0.023 3 h g 垂直度 0.027 9 0.029 1 0.011 2
Table 6. Conical tolerance measurement
View tableView in ArticleTable 6. Conical tolerance measurement
曲面 测量项目 本文算法 设计值 误差 c 直径公差/mm 0.012 6 0.015 0.002 4 角公差/（'） ±27 ±30 ±3
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Yijun JIANG, Zexin LIU, Xueshuan LIU, Chao LONG, Liming DUAN, Yufang CAI. Measurement method for internal error of rotary parts using industrial CT images[J]. Optics and Precision Engineering, 2025, 33(4): 557
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Received: Oct. 26, 2024
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Published Online: May. 20, 2025
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