Multi-layer and multi-pass welding method based on industrial welding robot

• Main Authors: LIU YI, BAO MINGLU, BAO MINGHAO, WU XIAO'AO, SUN JIACHENG
• Format: Patent
• Language: Chinese; English
• Published: 20.08.2024
• Subjects: CHAMBERS PROVIDED WITH MANIPULATION DEVICES; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; HAND TOOLS; MACHINE TOOLS; MANIPULATORS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; PORTABLE POWER-DRIVEN TOOLS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The invention discloses a multi-layer and multi-pass welding method based on an industrial welding robot. The method comprises the steps that double-face manual beveling is conducted on a thick plate to be welded, and manual bottoming is conducted on the middle of the plate to be welded; using a line laser scanning system to find a weld center position and weld start and end point positions; scanning by using a line laser scanning system to obtain parameters; and the robot is matched with a capping process database according to the groove bottom width and the groove angle, and automatic multi-layer and multi-pass welding is conducted till welding is completed. According to the multi-layer and multi-pass welding method based on the industrial welding robot, the method that the width of the bottom of the groove is scanned through multiple times of line laser to be matched with a process database has higher flexibility, the defect that a path is inaccurate due to too many layers in a traditional method can be ef