Grinding device for sheet metal machining

The utility model belongs to the field of polishing devices, and particularly relates to a sheet metal machining polishing device, which solves the problems of low clamping efficiency and poor flexibility in the prior art, and comprises a base, and the bottom of the base is fixedly connected with a waste box and two symmetrically arranged supporting legs through screws respectively. The top of the base is fixedly connected with a grinding box and two symmetrically-arranged supporting plates through screws, rotating shafts are rotationally installed on the supporting plates, a rotating motor is installed on one side of one supporting plate, and through the arrangement of a driving bevel gear, a driven bevel gear and other structures, the rotating shafts can rotate around the rotating shaft. Due to the meshing arrangement of the driving bevel gear and the driven bevel gear, the two screw rods rotate synchronously, then the two clamping blocks move synchronously, clamping and fixing are achieved, only the two sc