Flooded evaporation tube fin machining combined tool

The utility model relates to a flooded evaporation tube fin machining combined cutter which comprises a cutter shaft, a shaft shoulder is arranged at one end of the cutter shaft, and threads are arranged at the other end of the cutter shaft. The cutter shaft is sequentially sleeved with a roller ring, a knurling cutter, a relieving tooth circular blade set and a flattening roller in the direction from a shaft shoulder to a shaft end thread. A plurality of roll collar teeth are arranged on the roll collar, and the heights of the roll collar teeth are gradually increased in sequence in the direction from the shaft shoulder to the shaft end thread; the relief tooth circular blade group comprises two relief tooth circular blades, and a gap adjusting gasket is arranged between the two relief tooth circular blades; a shaft sleeve nut is arranged on the threads in a matched mode, and the shaft sleeve nut abuts against the flattening roller. Threads can be machined through the roller ring teeth on the roller ring, th