Special shaped workpiece numerical control lathe processing tool

The invention belongs to the technical field of processing of numerical control lathe special shaped workpieces, and concretely provides a special shaped workpiece numerical control lathe processing tool. The tool comprises a tool main body, a slide block, a pull rod, an internal expansion pull rod and an internal expansion core, wherein the tool main body is provided with a sliding cavity in which the slide block vertically slides, the slide block is arranged in the sliding cavity, one end of the pull rod is connected with the bottom of the slide block, the other end extends from the bottom of the tool main body and is connected with a numerical control lathe, the internal expansion core is arranged on the top of the tool main body, the outer surface of the internal expansion core is matched with a fixation hole of the special shaped workpiece, one end of the internal expansion pull rod passes through the internal expansion core and is detachably connected with the slide block, and the other end is bunted against the top of the internal expansion core. The processing of the special shaped parts is applied to the numerical control lathe, and the defects of the existing numerical control processing center such as relatively high processing cost, relatively long processing period and being not suitable for large-batch production can be conquered.