A multi-band laser polishing device based on polarization modulation

By combining polarization modulation and a multi-band laser head with a multi-axial moving platform, the problem of inhomogeneity in anisotropic materials by traditional laser polishing is solved, achieving efficient and precise polishing results and improving material surface quality and processing stability.

CN224508726UActive Publication Date: 2026-07-17XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Filing Date
2025-07-31
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional laser polishing technology is difficult to achieve efficient and uniform polishing of anisotropic materials, and is prone to surface damage or low efficiency.

Method used

A multi-band laser polishing device based on polarization modulation is adopted, which utilizes infrared, ultraviolet and polarization-modulated multi-band laser heads, combined with a multi-axial moving platform, to achieve high-quality polishing of anisotropic materials by switching polarization states and coordinating band processing.

Benefits of technology

It significantly improves the polished surface quality of anisotropic materials, enables precise polishing of complex curved surfaces in all directions, inhibits material oxidation, and ensures the stability and precision of the processing environment.

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Abstract

The utility model discloses a kind of multi-band laser polishing devices based on polarization modulation, suitable for the surface polishing of anisotropic material, the device includes sealed cabin, multi-axial moving platform being arranged in sealed cabin, laser converter system being arranged at the top of sealed cabin;Multi-axial moving platform can make workpiece on it along three-axis movement and rotate;Laser converter system includes laser device bin at the top of sealed cabin, laser generator being arranged in laser device bin, laser head converter being connected with laser device bin by bearing, infrared waveband laser head, ultraviolet waveband laser head, polarization modulation multi-band laser head being fixed on laser head converter and being towards workpiece upper surface;Three laser heads are respectively connected and arranged in infrared laser processor, ultraviolet laser processor and polarization modulation module of laser device bin;Through the synergistic effect of multi-band laser, more smooth, uniform workpiece surface effect is obtained, and efficient low-damage polishing of complex curved surface, micro-hole structure is realized.
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Claims

1. A polarization modulation based multi-band laser polishing apparatus, characterized in that: Includes a sealed chamber (14), a multi-axial moving platform disposed within the sealed chamber (14), and a laser converter system disposed on top of the sealed chamber (14); The multi-axis moving platform enables the work panel (7) mounted thereon to move and rotate along the x-axis, y-axis, and z-axis, and the workpiece fixture (16) is mounted on the work panel (7); The laser converter system includes a laser device compartment (2) located at the top of the sealed chamber (14), a laser generator set inside the laser device compartment (2), a laser head converter (3) connected to the laser device compartment (2) via bearings, and an infrared laser head (4), an ultraviolet laser head (5), and a polarization-modulated multi-band laser head (6) fixed on the laser head converter (3). The infrared laser head (4), the ultraviolet laser head (5), and the polarization-modulated multi-band laser head (6) face the upper surface of the workpiece on the workpiece fixture (16) and are respectively connected to the infrared laser processor, the ultraviolet laser processor, and the polarization modulation module set inside the laser device compartment (2). The workpiece is an anisotropic material workpiece; The sealed chamber (14) is equipped with a laser control system on its outside, which is connected to the laser source and polarization modulation module of the infrared laser head (4), the ultraviolet laser head (5), and the polarization modulation multi-band laser head (6). It can control the band switching and polarization state of the laser according to the preset process parameters.

2. The polarization modulation based multi-band laser polishing device according to claim 1, wherein: The sealed chamber (14) is an argon-sealed chamber, which is equipped with a chamber pressure detection sensor and an oxygen concentration sensor.

3. The polarization modulation based multi-band laser polishing device of claim 1, wherein: The multi-axis moving platform includes two y-axis motion guide rails (10) fixed on the base, a y-axis motion guide rail slider (11) that slides along the two y-axis motion guide rails, an x-axis motion guide rail (8) that is integral with the y-axis motion guide rail slider, an x-axis motion guide rail slider (9) that slides along the x-axis motion guide rail (8), a z-axis motion guide rail (12) that is integral with the x-axis motion guide rail slider, a z-axis motion guide rail slider (13) that slides along the z-axis motion guide rail (12), and a work panel (7) that is connected to the z-axis motion guide rail slider (13) via a rotating disk (15).

4. The polarization modulation based multi-band laser polishing device of claim 1, wherein: It also includes a base (1) set at the bottom of the sealed chamber (14), the base (1) being fixed to the sealed chamber (14) by bolts, and the laser device compartment (2) being tightly fitted to the sealed chamber (14) at the top of the sealed chamber; The laser head converter (3) can rotate relative to each other along the axis, and the infrared laser head (4), the ultraviolet laser head (5), and the polarization-modulated multi-band laser head (6) are evenly distributed around the circumference of the axis.

5. The polarization modulation based multi-band laser polishing device of claim 1, wherein: The workpiece fixture (16) has a protrusion that is embedded in the groove of the work panel (7) to form a sliding pair.