Surface grinding device for machining

The invention discloses a surface grinding device for machining, and belongs to the technical field of machining equipment. A surface polishing device for machining comprises a base and a control device, and the control device is fixedly installed on the upper surface of the base. The grinding component is used for grinding the surface of the workpiece; a plurality of groups of polishing components are arranged, each polishing component comprises an abrasive belt, and the abrasive belts in the plurality of groups of polishing components are different in specification; the conversion part is used for conversion of the multiple sets of grinding parts, and the conversion part comprises a stand column, a first motor, a first gear and a second gear; the supporting assembly is used for placing a workpiece; the grinding device effectively solves the problems that most of existing grinding devices work through single-specification abrasive belts, if planes with different smoothness need to be formed, abrasive belts w