Research on curve weld identification method based on point cloud
Three-dimensional curve weld is a common weld in welding process.It has the characteristics of complex,variable and irregular curve,which makes it difficult to identify.This paper proposes a point cloud-based identification method for three-dimensional curve weld in automatic welding process,which has the advantages of high efficiency,high identification accuracy,wide application range and high reliability.The principle is to obtain the original point cloud data of the workpiece surface by using a three-dimensional structural light scanner,realize the precise extraction of the weld boundary by using the PCL point cloud library for sampling,segmentation,boundary extraction and curve fitting,and fit the actual running track of the end of the welding gun.
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