Aluminum alloy frame longitudinal beam forming die and heating forming method using same

The invention provides an aluminum alloy frame longitudinal beam forming die and a heating forming method using the aluminum alloy frame longitudinal beam forming die, and the aluminum alloy frame longitudinal beam forming die comprises a lower die part, an upper die part, a sliding block, an insert and a driving block. An aluminum alloy longitudinal beam to be formed is placed on the female die of the lower die part; the upper die part and the lower die part are movably connected in the first direction, and a male die of the upper die part and the female die are oppositely arranged. The sliding block is connected with the lower die part in a sliding mode in the direction perpendicular to the wing face of the aluminum alloy longitudinal beam to be formed. A first inclined wedge surface is arranged on the sliding block; the insert is located between the female die and the sliding block, and the insert is connected with the side, opposite to the aluminum alloy longitudinal beam to be formed, of the sliding bloc