The positioner is a special welding auxiliary equipment, which is suitable for the welding position of the rotary work to obtain the ideal processing position and welding speed. It can be used with manipulators and welding machines to form an automatic welding center. It can also be used for workpiece displacement during manual operations. The table rotation adopts frequency converter stepless speed regulation, with high speed regulation accuracy. The remote control box can realize the remote operation of the workbench, and can also be connected with the operating machine and the welding machine control system to realize the linkage operation.