Forming die for conic forgings and forming method thereof

The invention discloses a forming die for conic forgings and a forming method thereof, and belongs to the technical field of metallurgical system forging. The forming die and the forming method have the advantages of reducing forging allowance, reducing material consumption and improving forging performance. The forming die comprises a punch and a drain cap, wherein the punch consists of a first punch, a second punch and a third punch; the drain cap is provided with a through hole corresponding to the punch; and the tapers of the first punch, the second punch and the third punch are gradually increased. The forming method comprises the following steps: upsetting, indenting, primarily reaming, secondarily reaming, punching and shaping.