Zongbao SHEN, Yaoyang HAN, Kangnan MENG, Pin LI. Improving the efficiency of laser bending forming using circularly oscillating laser beam[J]. Optics and Precision Engineering, 2024, 32(6): 806
- Optics and Precision Engineering
- Vol. 32, Issue 6, 806 (2024)
Fig. 1. Schematic diagram of a circularly oscillating laser beam bending forming test device
Fig. 2. Schematic diagram of visual measurement
Fig. 3. Plate geometry size
Fig. 4. Physical drawing and Schematic diagrams of the two oscillation modes
Fig. 5. Temperature field distribution diagram of sheet surface under two oscillation modes
Fig. 6. Scanning surface morphology of the two oscillation modes
Fig. 7. Physical drawing of the formed part
Fig. 8. Change process of plate bending angle with time
Fig. 9. Change process of single scanning plate bending angle with time
Fig. 10. Schematic diagram of temperature gradient mechanism
Fig. 11. Bending process of plate profile along y-axis
Fig. 12. Stainless steel plate specimen
Fig. 13. Three-dimensional point cloud of plate surface profile
Fig. 14. Cross-section profile of the plate along the scanning path（y =30 mm）
Fig. 15. Change of the cross-section profile of the plate along the scanning path（y =30 mm） with the number of scans
Fig. 16. Evolution of the bending angle of the plate during the first，third， fifth， and seventh laser scans
Fig. 17. Derivative change of the bending angle of the plate during the first， third， fifth， and seventh laser scans
Fig. 18. Bending angle and its derivative changes of the plate at different measurement positions
Fig. 19. Plate bending angle distribution under different laser power
Fig. 20. Distribution of bending angle of plate under different interval time
Fig. 21. Upper surface morphology under different scanning times
Fig. 22. Relationship between the Rz value before scanning and the distribution of bending angle
Fig. 23. Section of plate after laser bending forming
Fig. 24. Relationship between the thickness of the plate and the bending angle before scanning
Fig. 25. Schematic diagram of geometric effects
Fig. 26. Relationship between scan area and bending angle per pass with existing bend angle
Fig. 27. Microscopic grain diagram after 1 scan
Fig. 28. Microscopic grain diagram after 5 scans
Fig. 29. Microscopic grain diagram after 10 scans
Fig. 30. Distribution of microhardness
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Table 1. Technical parameters of the Laser
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