Cutter translocating device

A cutting tool rotation device comprises a conical handle body, a rotator, and a set of cutting tools, wherein a 45 degree bevel on the head portion of the conical handle body butts against the bottom of the rotator; an elastic pin and a group of positioning holes are arranged on the joint portion; and the cutting tools are arranged on the lateral side of the rotator in such a manner that the central line of each cutting tool intersects the bottom of the rotator at the intersection point of the axial lines of the rotator and the conical handle body, with a 45 degree angle therebetween. The cutting tool is usually drilling, expansion cutter and reamer, and bevel-bottom arc grooves connected to each other from beginning to end are arranged on the side of each of the three positioning holes in the same direction. The utility model is used for hole machining, can achieve drilling, expanding and reaming processes in only one fixing process, and offers convenient, flexible and fast changing of cutting tools, thereby ensuing the hole position requirement and improving processing efficiency.