An automatic rotating mechanical worktable is characterized by comprising a
hydraulic cylinder, supporting stand columns, a hydraulic
piston, a coupler, a fixing tool, a
rotating disc, a worktable body and a fixing chuck, wherein the fixing chuck is fixed to the supporting stand columns, the worktable body is arranged on the fixing chuck and connected with the
rotating disc arranged in the fixing chuck, the lower side of the
rotating disc is connected with a driving device, the driving device comprises the
hydraulic cylinder, the hydraulic
piston and the coupler, the hydraulic
piston of the
hydraulic cylinder is connected with the coupler, the driving device is connected to the lower side of the rotating disc through the fixing tool, the rotating disc is in a round cake shape, a sliding wheel is arranged on the outer edge of the rotating disc, the fixing chuck is in a ring shape, and a sliding track matched with the sliding wheel of the rotating disc is arranged on the inner ring of the fixing chuck. The automatic rotating mechanical worktable has the advantages that the structure is simple, use is convenient, the combination efficiency of sand cores can be effectively improved, and the labor intensity of workers can be effectively relieved; besides, by adopting a tabletop rotating device, the rotating angle of the sand cores can be guaranteed, the sand cores can be prevented from being damaged, the rate of finished products can be increased, and requirements of modernized production can be met.