Two-dimensional laser spiral cleaning method

Abstract

The invention discloses a two-dimensional laser spiral cleaning method. The method is characterized in that a laser cleaning system involves two orthogonal deflection digital galvanometer motors; after passing through an optical isolation system and a collimating system in sequence, a laser is sequentially emitted on reflecting mirrors on shafts of the two orthogonal deflection digital galvanometer motors; after secondary reflection, a field lens restrain the laser to be focused in a two-dimensional plane to scan and ablate stains on the surface of a target material substrate; the interface protocol of the two digital galvanometer motors is XY2-100; and the two digital galvanometer motors are independently controlled. According to the two-dimensional laser spiral cleaning method, for any point in the cleaning area, compared with performing ablating line-by-line, the laser is returned to the vicinity of the point after passing through the outer ring according to a spiral filling path, the area of the point obtains cooling time, and the laser heat accumulation effect is weakened; and the line-by-line scanning speed is the speed of the single galvanometer motor, the spiral scanning speed is the speed vector sum of the two motors, so that compared with a line-by-line scanning mode, laser spiral cleaning is more uniform in effect and higher in cleaning efficiency.

Description

technical field [0001] The invention relates to a two-dimensional laser spiral cleaning method, which belongs to the field of two-dimensional laser cleaning. Background technique [0002] Two-dimensional laser cleaning means that the laser scans on a two-dimensional plane through the deflection of the galvanometer motor, and ablates the oil, rust or oxide layer on the surface of the target, so as to achieve the effect of cleaning the surface of the target. Based on the laser cleaning application of the galvanometer motor module, the existing scanning mode is line scanning and then line scanning again, which mainly has problems such as poor cleaning uniformity and low cleaning efficiency. [0003] The poor cleaning uniformity is mainly due to the fact that in the progressive scanning mode of the galvanometer, the laser scans to the line edge area and undergoes a deceleration to reverse acceleration process, while the laser in the non-edge area maintains high-speed deflection....

AI Technical Summary

Problems solved by technology

Based on the laser cleaning application of the galvanometer motor module, the existing scanning mode is line scanning and then line scanning again, which mainly has problems such as poor cleaning uniformity and low cleaning efficiency.

[0003] The poor cleaning uniformity is mainly due to the fact that in the progressive scanning mode of the galvanometer, the laser scans to the line edge area and undergoes a deceleration to reverse acceleration process, while the laser in the non-edge area maintains high-speed deflection

The average speed of laser scanning in the edge area is lower than that in the non-edge area, resulting in a stronger ablation degree in the edge area than ...

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