Visual-Based Multi-Section Welding Path Generation Algorithm

Abstract

As an important form of additive manufacturing, welding is widely used in steel components welding work of construction, shipbuilding and other fields. In this study, an intelligent welding path generation algorithm based on multi-section interpolation is proposed in order to deal with non-standard multi-pass welding grooves which are difficult to be handled by automatic welding equipment in the construction site. Firstly, the non-standard grooves are classified and the reasons for their occurrence are discussed. Secondly, an automatic welding additive manufacturing system framework is discussed and an appropriate detection method is selected. Then, combining with the welding standard of non-standard grooves and the characteristics of the welding process, a multi-section interpolation-based welding path generation algorithm is proposed. Finally, a visual experiment platform was built to detection the typical non-standard groove and the welding experiment is implemented to verify the feasibility of the algorithm. According to the path generated by the algorithm, the welded steel components test plate meets the actual engineering standard after quality inspection. The experimental results and simulation results conclude the algorithm can be used to generate the welding path of the non-standard groove.

An Automatic Welding Robot for the Roof of Spiral Steel Silo

“…Research on the electromagnetic and negative pressure coupling adsorption technology of wall-climbing robots, which was developed by Ying Xu from China, is of great significance in improving the level of safety monitoring during the construction and service of coal mine shafts [17]. Lu Hong from China proposed an intelligent welding path generation algorithm based on the multi-section interpolation for non-standard multi-pass welding grooves, which are difficult to handle by automatic welding equipment on the construction site [18]. In order to solve the problem of poor mechanical properties in filling materials compared with substrates that have excellent mechanical properties, Jaewoong Kim from South Korea performed the application of fiber laser welding with low welding deformation and no filler material to high-manganese steel [19].…”