Burr polishing device for hardware machining

The utility model provides a burr polishing device for hardware machining. The burr polishing device comprises a base, an assembly line plate, a control box, a blanking assembly, a polishing assembly and a clamping assembly. The assembly line plate, the control box and the grinding assembly are arranged on the base, the assembly line plate is connected with the blanking assembly, a guide groove is formed in the assembly line plate, the number of the clamping assemblies is two, the clamping assemblies are located on the two sides of the assembly line plate, and the control box is arranged on the control box. The control box is respectively close to the blanking assembly and the polishing assembly, the control box is electrically connected with the blanking assembly, the polishing assembly and the clamping assembly, the blanking assembly is used for firstly removing large burrs on the surface of a part, and then the polishing assembly is used for polishing the part subjected to rough machining; the clamping ass