Loose tooling forging blank forming method of long-sheet complicated die forge piece

The invention provides a loose tooling forging blank forming method of a long-sheet complicated die forge piece and belongs to the field of aviation product plastic forming. According to the loose tooling forging blank forming method of the long-sheet complicated die forge piece, an original free forging blank method is changed, free forging loose tooling forming is applied to die forging blank forming, a simple tooling is designed, materials are accurately calculated, steps of square forging, bar pulling, indenting, heading, necking, clamp pressing, final forming and the like are utilized, the shape of a blank is similar to that of the forge piece, final forming of the die forge piece is facilitated, the whole streamline of the die forge piece is reasonable, the problems that the shape is not regular, the size is slightly large, die forging forming size mismatching exists and the like due to the original free forging blank method can be avoided, and the loose tooling forging blank forming method of the long-sheet complicated die forge piece has the advantages that the die manufacturing is simple, costs are low, the period is short, forging heating number is small, the material utilization ratio is high, and the like.