Thermal forming tailored blank laser welding integrated door ring structure and machining method

The invention discloses a thermal forming tailored blank laser welding integrated door ring structure and a machining method. The thermal forming tailored blank laser welding integrated door ring structure comprises a first material piece, a second material piece, a third material piece, a fourth material piece, a fifth material piece and a sixth material piece. The first material sheet, the second material sheet, the third material sheet, the fourth material sheet, the fifth material sheet and the sixth material sheet are sequentially welded to form a door ring structure; the door ring structure correspondingly forms an A column upper part, an A column lower part, a doorsill, a B column lower part, a B column and a B column upper part through hot press molding processing. After the material sheets with different material thicknesses and the adjacent material sheets are connected into one material sheet through tailored blank laser welding, the material sheets are subjected to integrated punch forming to form