A laser welding device and method based on annular spot coaxial wire feeding

Abstract

The invention discloses a laser welding device and method based on ring-shaped spot coaxial wire feeding. head; the control system connects the laser system and the ring beam control system through a signal connection line; the ring beam control system is used to control the diameter of the spot diameter of the ring laser beam, and the diameter of the ring beam is adjusted by a rotating parabolic mirror; the The optical wire feeding system is fixed inside the optical wire coaxial welding head through the support frame. The welding wire is placed on the welding wire rack, and sent to the high temperature resistant welding tip in the welding torch through the push-pull roller and welding wire straightener for welding operation, which solves the problem There are problems such as poor optical wire coupling behavior, unstable processing quality, and limited welding distance in the laser wire-filled welding process, and it has high positioning accuracy and good operability.

Description

technical field [0001] The invention relates to an efficient laser welding device and method, in particular to a laser welding device and method based on annular spot coaxial wire feeding. Background technique [0002] Laser filler wire welding technology is a laser welding technology using filler wire, which not only maintains the advantages of laser welding, such as small heat input, energy concentration, etc., but also improves the gap adaptability, improves the shape of the weld surface, and improves the Mechanical properties of the joint. Laser filler wire welding technology can be used for thick plates with large welding gaps, and can also achieve the effect of suppressing post-weld defects by changing the chemical composition of the welding wire. [0003] The current laser wire-filling welding technology is generally side-axis wire feeding. The filling of welding wire makes the laser welding process more complicated. The welding wire can be fed from the front of th...

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Problems solved by technology

[0006] In order to achieve high-precision remote laser wire-filling welding of complex structures, the present invention provides a laser welding device based on coaxial wire feeding of annular spot, which can effectively solve the problems of poor wire coupling behavior and limited welding distance in existing laser welding devices. question

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