Medium-thickness plate broken line weld joint tracking method based on three-wire crossed swing arc sensing

Abstract

The invention relates to a medium-thickness plate broken line weld joint tracking method based on three-wire crossed swing arc sensing. According to the method, a manipulator, a welding power supply,a wire feeder, a three-wire cross swing arc sensor, a three-wire cross swing arc welding gun, a three-wire cross swing arc welding seam tracking signal processor, a welding gun inclination angle arithmetic unit and a welding gun posture real-time adjuster are applied. The cross swing of the three-wire electric arc is that the guide electric arc and the following electric arc swing in the same direction and swing in the opposite direction with the middle electric arc, and a welding pool is fully stirred through the cross swing of the three-wire electric arc, so that the welding quality is improved. A left-right deviation signal and a high-low signal of a welding seam are extracted through a three-wire cross swing arc sensor to realize weld joint tracking. The posture of the welding gun is automatically adjusted in real time through high-low signal mutation of the guide arc and the middle arc.

Description

technical field [0001] The invention relates to the technical field of welding automation, in particular to a method for tracking broken line seams of medium and thick plates based on three-wire cross swing arc sensing. Background technique [0002] With the rapid development of the manufacturing industry, the deposition rate and welding speed of traditional single-wire welding have approached the limit that this process can achieve, and it is difficult to further improve it only by improving the welding power supply, welding wire material and shielding gas. Its welding performance is difficult to meet the needs of the growing manufacturing industry. In order to meet the requirements of high-efficiency and high-quality modern manufacturing, the multi-wire welding technology, which is one of the high-efficiency welding methods, has been paid more and more attention. Under the premise of ensuring the quality of welding products, use as many welding wires as possible to realiz...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that the welding seam tracking of the current arc sensor cannot well realize the real-time adjustment of the welding torch posture, and at the same time, in order to improve the welding quality and efficiency of the medium-thick plate with a broken line weld seam, the present invention proposes a three-wire cross swing arc Tracking Method of Broken Line Weld Seam in Medium and Heavy Plate Based on Sensing

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