Cutter tooth inequqidistant reamer

The utility model discloses a reamer with unequally spaced teeth, which is characterized in that included angles W between teeth on semicircular circumference of a cutter tooth section are not the same angle. In addition, the angle deviations between adjacent teeth on the semicircular circumference are not the same. The included angles between the cutter gears on the semicircular circumference are symmetrically distributed with the included angles between the cutter teeth on the other semicircular circumference. The utility model is mainly used for fine processing operation of the metallic hole. When in avoiding reaming, resulting from that the unbalanced cutting effect on the cutter teeth generates circular vibration, a vertical indent is left onto the hole wall; therefore, the reamed hole surface has a relatively fine roughness and circular cylinder level with the hole processing accuracy improved at the same time.