Automatic welding rotary worktable for ring parts

The automatic welding rotary workbench for the ring parts comprises a base, a speed adjusting motor and a worm speed reducer are fixed to the lower portion of the base, the output end of the speed adjusting motor is connected with the input end of the worm speed reducer, and a transmission gear is fixedly arranged on an output shaft of the worm speed reducer. A rotary working disc for aligning andpositioning a workpiece is rotationally supported at the upper part of the base; an inner gear ring is fixedly connected to the lower surface of the rotary working disc; the transmission gear is arranged in the inner gear ring and engaged with the inner gear ring. According to the utility model, a workpiece can be accurately aligned, positioned and supported, and is combined with automatic welding equipment, so that the automatic machining of ring disc type workpieces is realized, the labor intensity of operators is greatly reduced, the working environment of workers is improved, the workingefficiency is improved, an