earticle

영어

To improve the traditional welding methods that cannot meet the high-quality and efficient welding requirements of the corrugated sheets and other large work pieces, a visible and intelligent method to monitor the fillet welding of corrugated sheets and the equipment were researched. A system based on single laser line to track the assembly gap to be welded was developed and built. First, a system consisting of work-piece, torch, laser, and camera was assembled to monitor the fillet welding, and the coordinates for the motion platform, camera, and image were established. Then, according to the image of projection lines, a model was developed to analyze and calculate the change in width and position of the assembly gap caused by the undulating edge and deformation of the corrugated sheet and base plate. Finally, the work-piece was measured by contacting method and the result was compared with that obtained by automatic monitoring based on the visual sensors. The results indicated that the monitoring of width and trajectory of the assembly gap can reach an accuracy of ±0.5mm. This level of precision is sufficient for the requirements of controlling the torch and adjusting welding parameters in automatic welding of container corrugated sheet.