Machining method for hot forging forming of starlike sleeve

The invention relates to a machining method for hot forging forming of a starlike sleeve, a starlike sleeve hot forging forming assembly line comprises a high-frequency heating device, punching machine equipment, a first mechanical arm device and a second mechanical arm device, the punching machine equipment comprises a workbench, a punching end, a lower die assembly and an upper die assembly, and a forging station is formed between the workbench and the punching end; the forging and pressing station and the lower die assembly are arranged in a spaced mode. The punch press equipment impacts the heated metal column for the second time, the end of the metal column is forged and pressed at the forging and pressing station, the size precision and the end shape of the metal column can be improved, meanwhile, the shaft diameter requirement of the metal column is lowered, material waste is reduced, the internal stress structure of the metal column can be improved through forging and pressing, and the lateral extrusi