Polishing machine capable of collecting chippings conveniently

The polishing machine comprises a main machine, a conveying device is installed at the lower end of the main machine, a base is connected to the lower end of the main machine, a protruding block is fixedly connected to the surface of one side of the conveying device, a sliding way is formed in the surface of one end of the protruding block, a clamping groove is formed in the protruding block, and a first brush body is inserted into the upper end of the protruding block. A protruding block is inserted into the upper end of the base, a second brush body is inserted into the lower end of the protruding block, one end of the first brush body and one end of the second brush body are connected with rubber blocks, a vertical block is connected to the surface of the upper end of the base, a sliding groove is formed in the vertical block, a sliding block is clamped in the sliding groove, a collecting box is connected to the surface of one end of the sliding block, and a handle is connected to the surface of the front