It has all the features and functions of a three-dimensional platform, with platform hole spacing of 50 or 100mm, and corresponding grid lines engraved on the platform. 50X50 or 100x100 grid lines are engraved on the workpiece installation surface of the table for easy visual inspection of the workpiece. Its complex surface design enables it to have the function of multi-directional spatial expansion to meet the process requirements of some special welding parts, while limiting its size and scope of use. It is generally used in conjunction with displacement machine robots for welding and rotating mechanisms for welding. It is mainly used for welding polyhedra in the same process, and its efficiency can reach more than three times that of ordinary fixtures.