The invention discloses a rubber forming method and die for sheet
metal frame parts with different-direction flanges. A model of the sheet
metal frame parts comprises an equal-curvature arc-shaped webplate, the first
flange and the second
flange, wherein the first
flange and the second flange are symmetrical; and the forming die comprises a carcass and a cover plate matched with the carcass, thecarcass comprises two forming stations, the first forming
station matched with the first flange is arranged on the inner side of the carcass, the second forming
station matched with the second flangeis arranged on the outer side of the carcass, an arc-shaped avoiding groove is formed in the inner surface of the cover plate, an expanded sheet of the first sheet
metal frame part is placed on the first forming
station of the carcass for positioning, an expanded sheet of the second sheet metal frame part is placed on the second forming station of the carcass for positioning, first rubber formingis performed, then the first sheet metal frame part is turned over and placed on the second forming station of the carcass, the second sheet metal frame part is turned over and placed on the first forming station of the carcass, and second rubber forming is performed.