Axial tracking system and method for arc welding robot linear butt joint welding line

Abstract

The invention provides an axial tracking system and method for an arc welding robot linear butt joint welding line. The axial tracking system comprises a six-axis mechanical arm, a laser displacementsensor, a robot control cabinet, a digital welding power source, a welding gun and a clamp. The welding gun is arranged on the six-axis mechanical arm, the laser displacement sensor is arranged on thewelding gun through the clamp, and the connecting line of the position of a laser point of the laser displacement sensor and the sharp end of a welding wire is perpendicular to the welding line. Thewelding gun is connected with the digital welding power source, and the digital welding power source, the six-axis mechanical arm and the laser displacement sensor are connected with the robot controlcabinet. The axial tracking system and method can effectively solve the problem that due to changes of workpieces in the height direction, the welding programming demonstration process is complex; meanwhile, the problem that due to workpiece individual difference, the welding position is inaccurate can be solved; and in addition, the welding gun posture in the welding process can be changed, andimportant significance is achieved for welding quality control.

Description

technical field [0001] The invention relates to an arc welding robot system with welding seam tracking. Specifically, a displacement sensor is used to assist in realizing the axial adjustment of a welding wire tip during robot welding, and is mainly applied to tracking of straight welding seams with height differences. Background technique [0002] Modern production puts forward requirements for welding technology to further improve efficiency, optimize quality, and improve working conditions. Welding automation is a concrete manifestation of welding workers' compliance with this requirement. Due to the influence of various factors, the actual welding conditions often change. For example, due to strong arc radiation, high temperature, smoke, spatter, groove conditions, machining errors, clamping accuracy, surface conditions and thermal deformation of the workpiece, the welding torch deviates from the weld, resulting in a decline in welding quality or even failure. Such chan...

AI Technical Summary

Problems solved by technology

The large-scale application of corrugated plates puts forward requirements for automatic welding. Due to the complex shape of the welded seam of corrugated plates, the teaching process is cumbersome, and the traditional robot welding process has high requirements for the accuracy of fixtures. It is necessary to introduce suitable sensors to simplify and optimization process

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