US 11,890,698 B1
Double-beam laser polishing device and polishing method for aluminum alloy
Haibing Xiao, Guangdong (CN); Yunsheng Zhang, Guangdong (CN); Mingjun Liu, Guangdong (CN); Yongquan Zhou, Guangdong (CN); and Xinzhong Wang, Guangdong (CN)
Assigned to SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY, Guangdong (CN)
Appl. No. 18/262,366
Filed by SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY, Guangdong (CN)
PCT Filed Aug. 26, 2021, PCT No. PCT/CN2021/114734
§ 371(c)(1), (2) Date Jul. 20, 2023,
PCT Pub. No. WO2022/241967, PCT Pub. Date Nov. 24, 2022.
Claims priority of application No. 202110539588.8 (CN), filed on May 18, 2021.
Int. Cl. B23K 26/352 (2014.01); B23K 26/082 (2014.01); B23K 26/064 (2014.01); B23K 26/12 (2014.01); B23K 26/073 (2006.01); B23K 26/067 (2006.01); B23K 103/10 (2006.01)
CPC B23K 26/3576 (2018.08) [B23K 26/064 (2015.10); B23K 26/0673 (2013.01); B23K 26/073 (2013.01); B23K 26/082 (2015.10); B23K 26/12 (2013.01); B23K 2103/10 (2018.08)] 10 Claims
OG exemplary drawing
 
1. A double-beam laser polishing device for an aluminum alloy, comprising:
a frame; and
a rotary workbench and an optical path system, which are arranged on the frame;
wherein
the rotary workbench is configured for supporting a workpiece;
the optical path system comprises: a first fiber laser, a second fiber laser, a first three-dimensional galvanometer, and a second three-dimensional galvanometer;
the first three-dimensional galvanometer is connected with the first fiber laser through an optical fiber, and the second three-dimensional galvanometer is connected with the second fiber laser through an optical fiber;
the first three-dimensional galvanometer and the second three-dimensional galvanometer are arranged side by side above the rotary workbench in a horizontal direction;
the first fiber laser and the second fiber laser are configured to emit laser beams with different powers and have different laser scanning paths, so as to achieve peak melting and valley filling and reduce a secondary roughness generated during polishing by the first fiber laser; and
a scanning path of the first three-dimensional galvanometer is a zigzag path, and a scanning path of the second three-dimensional galvanometer is a Z-shaped path, a square wave path, or a spiral wave path; or alternatively, the scanning path of the first three-dimensional galvanometer is a Z-shaped path, and the scanning path of the second three-dimensional galvanometer is a zigzag path, a square wave path, or a spiral wave path.
 
9. A double-beam laser polishing method for an aluminum alloy, being applied to the laser polishing device for the aluminum alloy according to claim 1, the method comprising:
mounting a workpiece on the rotary workbench;
obtaining, by the controller, a machining scanning trajectory, and planning a scanning path of the first three-dimensional galvanometer and a scanning path of the second three-dimensional galvanometer based on analog signals of an inclination sensor, a position sensor, and an electronic pressure regulating valve sent by the first three-dimensional galvanometer and the second three-dimensional galvanometer; and
sending, by the controller, control signals to the first three-dimensional galvanometer and the second three-dimensional galvanometer to control the first three-dimensional galvanometer and the second three-dimensional galvanometer to emit laser beams and to scan and polish the workpiece according to the scanning path of the first three-dimensional galvanometer and the scanning path of the second three-dimensional galvanometer, respectively.