AEROSPACE SHANGHAI, Volume. 41, Issue 6, 70(2024)
Prediction and Compensation Method for Machining Global Deformation of Large Storage Tank Bottom
Figures & Tables(14)
Fig. 1. Stresses of the middle curved surface in a thin shell differential element
Fig. 2. Displacement and rotation of the curved surface area of the rotary thin-walled workpiece
Fig. 7. Measurement point cloud data of the test workpiece after processing
Fig. 8. Contour cloud maps of deformation values during processing
Fig. 9. Internal profiles of the surface obtained by the linear laser sensor measurement and theoretical calculation when the workpiece thickness is 10.5 mm
Fig. 10. Internal profiles of the surface obtained by the linear laser sensor measurement and theoretical calculation when the workpiece thickness is 4.5 mm
Table 1.
Initial residual stress values of the element in each layer View tableView in ArticleTable 1.
Initial residual stress values of the element in each layer 层数 1 -16.1 -9.8 2 -11 -8.1 3 3.1 -5.2 4 7.2 -0.9 5 16.1 7.8 6 16.1 7.8 7 7.2 -0.9 8 3.1 -5.2 9 -11 -8.1 10 -16.1 -9.8
Table 2.
Parameters to be measured by the linear laser sensor View tableView in ArticleTable 2.
Parameters to be measured by the linear laser sensor 规格参数 数值 Z轴测量范围/mm ±20.5 X轴测量宽度/mm 35 Z轴重复精度/μm 0.5 X轴重复精度/μm 1.0 X轴分辨率/μm 12.5
Table 3.
Maximum deformation values and area division numbers under different thicknesses View tableView in ArticleTable 3.
Maximum deformation values and area division numbers under different thicknesses 工件厚度/mm 最大变形值/mm 区域划分数目 13.5 0.095 2 12 0.116 3 10.5 0.105 3 9 0.126 3 7.5 0.166 4 6 0.290 6 4.5 0.419 9 3 0.532 11
Table 4.
Compensation values of each area with 4.5 mm workpiece thickness View tableView in ArticleTable 4.
Compensation values of each area with 4.5 mm workpiece thickness 区域 虚拟基准点节点编号 虚拟基准点坐标值与位移值 区域偏移值/mm ∆X/mm ∆Y/mm ∆Z/mm 1 4 659 0 0.16 0.39 0.419 2 38 502 0.006 -0.139 0.342 0.369 3 4 283 -0.006 0.072 0.31 0.319 4 7 700 0.01 -0.13 0.238 0.269 5 4 534 0.072 0.06 0.195 0.219 6 39 024 0.036 -0.052 0.153 0.169 7 15 434 0.094 -0.036 0.063 0.119 8 39 870 0.056 0.003 0.032 0.069 9 4 615 0.008 -0.01 0.016 0.019
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Jianchi YU, Xingliang CHAI, Guoqiang GUO, Yongsheng ZHANG, Haibo LIU, Yongqing WANG. Prediction and Compensation Method for Machining Global Deformation of Large Storage Tank Bottom[J]. AEROSPACE SHANGHAI, 2024, 41(6): 70
Paper Information
Category: Innovation and Exploration
Received: May. 9, 2024
Accepted: --
Published Online: Mar. 7, 2025
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