PRESSED COMPONENT MANUFACTURING METHOD, MOLD DESIGNING METHOD, MOLD SHAPE DESIGNING DEVICE, AND MOLD

• Main Authors: SHINMIYA, Toyohisa, YAMASAKI, Yuji, NAKAGAWA, Kinya
• Format: Patent
• Language: English; French; German
• Published: 12.07.2023
• 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

There is provided a pressed component manufacturing method applicable even when a pressed component shape that cannot be formed without being greatly drawn is manufactured. In press forming a metal sheet into a final component shape through two or more press steps including a press step, the inflow amount of a material required for forming the metal sheet into the final component shape is determined based on the increase in the cross-sectional line length of the final component shape with respect to the line length before forming when the metal sheet is press formed into the final component shape by a single press step, the determined inflow amount of the material is distributed to each step including a final press step, and a preformed shape after press forming in the steps other than the final press step based on the distributed inflow amount. As the cross section, a line orthogonal to, in plan view, a direction in which the material flows when the metal sheet is drawn is set, and a plurality of cross sections is set which is individually cut by each of planes orthogonal to the line in plan view and extending in a direction along the sheet thickness direction of the metal sheet before forming.