Efficient auxiliary hole machining tool

The utility model belongs to the technical field of machining, and relates to an efficient auxiliary hole machining tool. The machining tool is of an integrated structure and is divided into a main body part and a clamping part. The main body part is of a four-petal spiral step structure and comprises a depth positioning area, a coarse positioning part, a fine positioning part and a chip removal part; the diameters of the depth positioning area, the fine positioning part and the coarse positioning part are sequentially reduced, and the clamping part is connected with a pneumatic tool. A handheld pneumatic cleaning tool can be used for machining and is not limited by the position of a process hole, and the machining efficiency is improved; the positioning and guiding functions are realized, so that the process hole processing out-of-tolerance caused by insufficient precision in the process of manually processing the process hole is avoided; the cutter is designed for chip removal, and the machining process is