Method for Compensating Thermal Deformation Error in Transfer Station of Variable Curvature Workpiece

Zhuyue Li; Maosheng Hou; Zhichao Liu; Lijuan Li

doi:10.3788/CJL202148.1104003

Chinese Journal of Lasers, Volume. 48, Issue 11, 1104003(2021)

Method for Compensating Thermal Deformation Error in Transfer Station of Variable Curvature Workpiece

Zhuyue Li, Maosheng Hou^*, Zhichao Liu, and Lijuan Li

Author Affiliations

School of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun, Jilin 130022, China

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Abstract Get PDF(in Chinese)

Figures & Tables(12)

Fig. 1. Experimental process of our method

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Fig. 2. Schematic diagram of the thermal deformation

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Fig. 3. Simulation model. (a) Number of reference point; (b) result of the simulation analysis

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Fig. 4. Thermal deformation offsets of the reference point in different directions. (a) X-axis; (b) Y-axis; (c) Z-axis

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Fig. 5. Physical image of the variable curvature workpiece

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Fig. 6. Physical image of the FBG

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Fig. 7. Offset of the reference point. (a) Offset in the X-axis direction; (b) simulation and measured offsets of the point D1

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Fig. 8. Transfer errors of different stations. (a) Error of the direct transfer; (b) errors of different transfer methods

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Table 1. Physical parameters of the tested part
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Table 1. Physical parameters of the tested part
Material Mass density /(kg·m^-3) Poisson's ratio Expansion coefficient Elastic modulus /GPa
Al alloy 2770 0.33 2.3 71

Table 2. Transfer results after compensation by different methods

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Table 2. Transfer results after compensation by different methods

Station	M2→M1	M3→M1	M4→M1	M5→M1
Δt /℃	3.8	6.4	9.1	13.5
Max(e) /μm	80.0	137.5	209.8	310.4
Max(e_f) /μm	38.8	61.0	77.6	111.3
Max(e_s) /μm	22.7	38.2	52.3	81.2
R_fa /%	51.5	55.6	63.0	64.1
R_sa /%	71.6	72.2	75.1	73.8
Sum(e) /μm	491.4	852.8	1274.7	1924.9
Sum(e_f) /μm	178.8	278.2	309.7	458.8
Sum(e_s) /μm	95.7	170.3	218.0	352.7
R_f /%	63.6	67.4	75.7	76.2
R_s /%	80.5	80.0	82.9	81.7

Table 3. Date of the experimental measurement

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Table 3. Date of the experimental measurement

Point	M1			t₁/℃		M6		t₆/℃
Point	X/mm	Y/mm	Z/mm	t₁/℃	X/mm	Y/mm	Z/mm	t₆/℃
D1	3514.374	-834.94	-722.189	19.7	1829.876	1500.231	-728.182	23.5
D2	2351.999	-492.782	-724.254		2961.833	1932.464	-727.186	25.5
D3	3361.72	-476.897	-486.847		2167.471	1308.338	-491.105	27.4
D4	2673.413	-274.29	-488.175		2837.833	1564.298	-490.580	29.7
D5	3102.173	-87.686	-352.824		2609.409	1156.213	-355.169	34.2
D6	3593.193	80.431	-376.340		2320.699	724.836	-379.065	29.8
D7	2780.36	319.77	-377.812		3112.419	1027.007	-378.565	27.7
D8	4072.565	251.791	-592.493		2043.82	297.658	-595.569	25.8
D9	2471.164	723.275	-595.400		3603.658	893.059	-594.389	24.0

Table 4. Transition error of the non-uniform temperature field unit: μm
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Table 4. Transition error of the non-uniform temperature field unit: μm
Point D1 D2 D3 D4 D5 D6 D7 D8 D9
e 214 155 82 172 265 106 84 166 163
e_fi 23 56 55 71 38 64 62 33 36
e_si 18 60 30 41 31 39 53 24 38

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Zhuyue Li, Maosheng Hou, Zhichao Liu, Lijuan Li. Method for Compensating Thermal Deformation Error in Transfer Station of Variable Curvature Workpiece[J]. Chinese Journal of Lasers, 2021, 48(11): 1104003

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