System for tracking welding seam deviation through two-dimensional coaxial compensation galvanometer and deviation correction method

Abstract

The invention provides a two-dimensional galvanometer tracking welding seam offset compensation system and a deviation correction method, and the system comprises an information processing module which is used for setting a preset motion trail, and is also used for converting the collected actual image information of galvanometer and welding seam offset into pixel image information and pixel image data information, and transmitting the pixel image information and the pixel image data information to a data processing module. The pixel image information and the pixel image data information are used for calculating welding seam width value information and welding seam searching effect picture information by referring to a preset movement track; and the man-machine interaction module is used for displaying the welding seam width and the welding seam searching effect picture. The device has the beneficial effects that the CCD industrial camera and the welding head are coaxially arranged, so that the CCD industrial camera is prevented from occupying extra space; the vertical deviation of the laser focus relative to the center line of the welding head is changed to rectify the deviation of the galvanometer tracking welding seam, and the problem that the welding effect is not ideal due to frequent change of the distance between the scanning position and the welding position is solved.

Description

technical field [0001] The invention belongs to the technical field of laser welding, and in particular relates to a system and a deviation correction method for tracking the deviation of a welding seam by a two-dimensional coaxial compensation galvanometer. Background technique [0002] In the field of laser welding technology, spiral welding is generally used to carry out welding seam welding. The laser focus spot formed by the galvanometer motor driving the small angle and high-speed swing of the X and Y mirrors cooperates with the moving welding table to realize the spiral welding. The welding head using this welding method has complex structure and high R&D cost, and it is difficult to solve the problem of unsatisfactory welding effect caused by frequently changing the distance between the scanning position (laser focus) and the welding position (welding seam). [0003] The systems in the prior art for compensating the offset of the galvanometer to track the welding sea...

AI Technical Summary

Problems solved by technology

The structure of the welding head using this welding method is complex, the development cost is high, and it is difficult to solve the problem of unsatisfactory welding effect caused by frequent changes in the distance between the scanning position (laser focus) and the welding position (welding seam)

[0003] The system of compensating the galvanometer to track the offset of the weld seam in the prior art has the following problems: none of them can realize the relative position between the fixed welding head and the weld seam, which is usually driven by a motor to swing the galvanometer

Images