Gearbox die casting manufacturing die

The utility model discloses a gearbox die casting manufacturing die which comprises a supporting seat, a box body die is arranged on the top of the supporting seat, a box cover die is arranged on the top of the box body die, the box body die comprises a left die body, a right die body is movably connected to one side of the left die body, an inner die body is movably connected between the left die body and the right die body, and a box body die casting plate is fixedly connected to the top of the inner die body. Bottom air holes are formed in the front faces and the back faces of the two sides in the box die-casting plate, a cutting mechanism is arranged in the box die-casting plate, a plurality of bottom columns are fixedly connected to the periphery of the bottom end of the box die-casting plate, the box cover die comprises a box cover plate, and a plurality of top columns are fixedly connected to the periphery of the bottom end of the box cover plate. According to the gear box cover die-casting die, the pl