The invention fuses a 3D vision reconstruction technology, an off-line
programming technology and a weld joint tracking technology to realize unmanned
welding sites, and provides an off-line
programming laser weld joint
tracking system based on 3D vision. The specific operation process is that a 3D camera is installed above a
welding workpiece, remote triggering photographing is conducted after the workpiece is installed, and
point cloud data of
welding sites such as a workpiece and a clamp are obtained; and according to the off-line
programming laser weld joint
tracking system, three technologies of 3D visual
model reconstruction, offline programming and
laser welding joint tracking are fused and applied, so that unmanned welding site is realized. At present, the laser
welding joint tracking technology can solve the problem of frequent demonstration due to large change of a part of welding paths,
robot machining can be directly generated through off-line programming, however, based ona
standard model, the increasingly mature 3D vision reconstruction technology is applied to welding application, and through the welding site reconstruction, the cumbersome demonstration of a weldingprocedure on the welding sites is reduced, and the welding efficiency is improved.