Flanging die and forming method for titanium alloy multi-curve and multi-layer step structural part for aircraft

• Main Authors: ZHANG HONGLI, CHEN MENGYU, ZHANG SHAOLONG
• Format: Patent
• Language: Chinese; English
• Published: 12.09.2023
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

The invention provides a flanging die for a titanium alloy multi-curve and multi-layer step structural part for an aircraft and a forming method. The flanging die comprises a lower die plate, a pressing block, a positioning bolt, an upper die plate and an extrusion bolt. The upper surface of the lower die plate is of a curved surface structure and is provided with an extrusion groove in an irregular shape and two sets of first extrusion bolt holes. The shapes of the two material pressing blocks are matched with the shapes of the two material placing surfaces respectively; two groups of positioning bolt holes are formed in the material pressing blocks; the two sets of positioning bolts are arranged in the two sets of first extrusion bolt holes and the two sets of positioning bolt holes in a matched and penetrating mode. The lower surface of the upper die plate is provided with an extrusion boss and two sets of second extrusion bolt holes. The two sets of extrusion bolts are used for pushing the upper die plate