Swing arc-based multi-layer and multi-channel weld tracking system and identification method thereof

Abstract

The invention discloses a swing arc-based multi-layer and multi-channel weld tracking system and an identification method thereof. The weld tracking system comprises a welding gun, a welding power supply, a wire feeder, a welding tractor, a swinger, a driver, a hall current sensor, a main carriage and the like, wherein the welding gun is used for performing oscillatory scanning on a weld groove when driven by the swinger in the welding process, the change of relative positions between the welding gun and a workpiece directly causes the change of arc length, and the change of the arc length causes the change of arc parameters such as arc current, arc voltage and the like; the hall current sensor is used for sending detected welding current signals and positioning pulse signals to the controller, automatically judging the weld shape according to certain operation rules, processing the weld shape by selecting corresponding weld deviation signal extraction schemes and acquiring weld deviation information; and the swinger is used for regulating weld deviation, automatically tracking welds and completing automatic welding.

Description

technical field [0001] The invention belongs to the technical field of automatic welding control, and in particular relates to a tracking system and identification method for multi-layer and multi-pass welding seams based on swinging arcs. Background technique [0002] Seam tracking technology is an important research direction to realize welding automation. For the groove welding of thick plates, due to the influence of groove processing and assembly size and position errors, the use of accurate seam tracking technology for multi-layer and multi-pass welding is the key to ensure the welding quality. [0003] The welding seam tracking technology based on arc sensor and visual sensor is the mainstream of research and application at present. It can achieve a good tracking effect in the welding process of workpieces with single-layer weld seams. For multi-layer multi-pass welding of thick plates, in After the first seam is welded, the form of the welded joint has often changed...

AI Technical Summary

Problems solved by technology

[0005] The first purpose of the present invention is to provide a multi-layer multi-pass welding seam tracking system based on swinging ar

Images