Laser double beam welding equipment and method

Abstract

The invention discloses a laser double-beam welding device and method. The laser double-beam welding device comprises a beam splitter and a laser scanning device. The beam splitter is used for splitting an initial laser beam transmitted to the beam splitter into a first beam and a second beam, wherein the first beam is used for acting on welding flux. The laser scanning device is used for scanning the input second beam into a swinging light beam, wherein the swinging light beam is emitted in the direction roughly parallel to the spreading direction of the first beam and swings in the preset swinging direction in the emitting direction, and the swinging beam is used for acting on an area to be welded. According to the laser double-beam welding device and method, the problem that the area to be welded is not fused can be effectively solved, the welding quality is improved, and the stability in the welding process can be guaranteed as well. Meanwhile, repeatability in the welding process can be improved, and the welding efficiency can be better improved.

Description

technical field [0001] The invention relates to the field of welding, in particular to a laser double-beam welding equipment and method. Background technique [0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Compared with other welding methods, it has its unique advantages and can be better applied to precision welding of micro and small parts. [0003] Existing laser welding equipment and methods generally include methods such as single-beam welding, double-beam welding, or rotating beam welding. The disadvantage of traditional single-beam welding is that due to the small diameter of the laser spot and the small heat action area, it is easy to have sidewall infusion during narrow gap welding, which affects the welding quality. In contrast, the traditional parallel dual-beam welding can preliminarily shape the energy density distribution of the laser beams, but the dual-beams have limited ability t...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to propose a laser double-beam welding equipment and method in order to overcome defects such as insufficient welding quality, insufficient stability of the welding process, and poor welding wire filling effect in the prior art.

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