Machining tool for numerical control machining tool

The invention discloses a machining tool for a numerical control machining machine tool, and belongs to the field of machining tools, the machining tool comprises a mounting column, a first extending groove is formed in the left side of the interior of the mounting column, and a machining mechanism is arranged in the first extending groove; after the machining mechanism rotates, chamfering and other machining can be conducted on an annular groove in the pipeline; the machining mechanism comprises an overturning plate rotationally connected to the interior of the first extending-out groove. A groove in a pipeline is chamfered through the blade, other blades can be replaced with the blade, other work can be conducted on the groove in the pipeline, the application range is wider, chamfering of the groove in the pipeline is more convenient, the blade can rotate around the rotating rod, the angle of the blade can be controlled, and the chamfering angle can be changed. The distance between the blade and the pipelin