Device for inhibiting laser welding deformation

Abstract

The invention provides a device for inhibiting laser welding deformation. The device comprises a laser welding head for welding, a sample clamp for clamping a sample to be welded, a heat sink structure for cooling a laser welding seam, and an ultrasonic vibration structure for contacting with the surface of the sample to be welded; the heat sink structure is a vortex tube for gas refrigeration andcomprises a cold air outlet end, a hot air outlet end, an air inlet end and a fixed end; the cold air outlet end is used for directly or indirectly blowing cold air generated by the vortex tube to the welding seam of the sample; the ultrasonic vibration structure sequentially comprises a tool head, an amplitude-change pole, and an energy converter from head to tail; the tool head and the amplitude-change pole are both made of titanium alloy materials; and the energy converter sequentially comprises a front cover plate made of aluminum alloy materials, a plurality of pieces of piezoelectric ceramics and a rear cover plate made of steel in the direction from the head to the tail of the ultrasonic vibration structure. The provided device for inhibiting laser welding deformation can effectively inhibit the deformation of the laser welding sample.

Description

technical field [0001] The invention belongs to the field of laser welding, and in particular relates to a device for suppressing laser welding deformation. Background technique [0002] Laser welding technology is widely used in industrial manufacturing for the connection of specimens. After conventional laser welding and sample cooling, thin-plate specimens will generate residual stress. After the clamp is released, the residual stress is redistributed. Under stress, the sample deforms, which seriously affects the quality of the weldment. [0003] Patent application CN200510105424.5 relates to a laser welding method and device using medium cooling for controlling welding stress and deformation in the manufacture of welded structures. After the laser welding head, there is a heat sink that moves synchronously. The heat sink is composed of a cooling medium pipe, a high-pressure air intake pipe, and an exhaust pipe. The cooling medium pipe at the outlet of the heat sink n...

AI Technical Summary

Problems solved by technology

[0004] However, the scheme of "spraying atomized cooling water" is often not easy to control in actual use, so it cannot effectively improve the deformation effect of thin plate samples after laser welding

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