Periodic oscillation laser welding method and welding assembly

Abstract

The invention discloses a periodic oscillation laser welding method and a welding assembly. The method comprises the following steps that firstly, a to-be-welded workpiece is placed on a workbench, and a to-be-welded welding line is formed; and secondly, a welding laser is generated, the welding laser swings according to the preset pattern and the preset frequency, meanwhile, the workbench moves in the welding line track main direction, and the welding laser is used for welding the to-be-welded welding line. Light spots of the welding laser periodically swing with the small amplitude and at high speed according to the preset pattern, meanwhile, the workbench moves in the welding line direction, accordingly, a wide welding line and a curve welding line can be easily welded, the welding speed is high, and efficiency is high.

Description

technical field

[0001] The invention relates to the field of laser welding, in particular to a periodic oscillation laser welding method and a welding assembly. Background technique

[0002] In the new energy industry, large-scale sheet metal industry, etc., for some applications with wide welds or curved welds caused by workpiece processing and assembly errors, welding thermal deformation, etc., if the traditional vibrating head is used, the spot is small and requires a spot Multiple reciprocating movements along the weld seam for multiple welding, the utilization rate of the galvanometer is low, and it is uneconomical; if a collimating and focusing single head is used for welding with the movement of the worktable, the moving speed and response speed of the worktable are low, which seriously restricts the welding efficiency.

[0003] Therefore, it is necessary to provide a welding method that can easily weld wide weld seams and curved weld seams, and has high welding speed...

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