LAUSR

Abstract Wire arc additive manufacturing is considered to be an efficient and economic technology for custom manufacturing. The forming accuracy requirement is not high in hybrid manufacturing processes. However, poor accuracy may result in the accumulation of excessive error, which causes forming failure. Therefore, it is important to evaluate the geometry of the welding workblank. This paper proposes a method for 3D profile measurement based on laser scanning technology to evaluate the manufacturing error, which can be fed back for further adjustment. The innovation lies in the following: The alignment of the point cloud and the original model is designed based on the transformation relationship of the system components, rather than the surface features, which are difficult to identify, so the absolute error can be evaluated; New calibration methods of the laser scanner and the tool control frame (TCF) are proposed, which make the calibration process more concise and accurate.