Polycrystalline diamond drilling and reaming integrated cutter and machining method

The invention discloses a polycrystalline diamond drilling and reaming integrated cutter and a machining method. Carbon fiber composite materials are widely applied to the aerospace and are almost machined by adopting a hole machining method. The polycrystalline diamond drilling and reaming integrated cutter comprises a cutter substrate (1) which is sequentially provided with a drilling end (2), a reaming end (3) and a clamping end (4) to form a stepped straight flute structure, wherein the drilling end is welded with a group of polycrystalline diamond (PCD) drilling end composite blades (5), and the reaming end is welded with a group of PCD reaming end composite blades (6). The polycrystalline diamond drilling and reaming integrated cutter is used for drilling carbon fiber composite materials.