Floating adjustable reamer

The utility model relates to the technical field of industrial cutters. The utility model relates to a reamer. The reamer comprises a reamer handle, a fixed seat and reamers, a mounting base is weldedto one side of the reamer handle. The fixed seat is fixedly connected to the other side of the reamer handle through a shaft; guide grooves are formed in the inner walls of the two sides of the fixedseat; a fixed plate is movably arranged in the fixed seat through a driving gear; the driving gear is arranged in the guide groove, an adjusting base is arranged on one side of the fixing plate, a limiting shaft is fixed between the inner walls of the fixing base in a welded mode, the adjusting base is arranged on the limiting shaft in a sliding mode, a groove base is welded to the other side ofthe adjusting base, and the reamer is fixedly installed on one side of the groove base through a locking screw. The driving gear rolls back and forth in the guide groove, so that the adjusting seat ispushed by the fixing plate