평판상 블랭크(4)를 펀치(51)와 다이(52)를 사용하여 아이어닝 가공하여 부등 두께의 원통상의 돌출부(11a)를 가지는 제 1 성형품(11)을 형성하는 제 1 공정을 갖고, 제 1 성형품(11)은 돌출부(11a)의 선단부에 위치하는 후육부(11c)와 후육부(11c)를 제외한 돌출부(11a)의 부분인 판 두께 감육부(11d)를 포함하고 있고, 제 1 공정에서는 판 두께 감육부(11d)에 대응하는 블랭크(4)의 부분이 아이어닝 가공되는 것을 특징으로 하는 대중형 휠 디스크의 제조 방법.
A method of manufacturing a large- or medium-sized wheel disk including using a punch or die in a first step of ironing a blank of a flat plate to a first-stage product. The first-stage product having a cylindrical rising portion with an axially non-constant thickness. The rising portion includes a thick portion located at a tip portion of the rising portion and a thickness-reduced portion which is a remaining portion of the rising portion excluding the thick portion. During the first step, only a portion of the blank corresponding to the thickness-reduced portion is ironed.
METHOD OF MANUFACTURING A LARGE- OR MEDIUM-SIZED WHEEL DISK AND A PRODUCT MANUFACTURED THEREBY
대중형 휠 디스크의 제조 방법과 그 성형품
2017-09-28
Patent
Electronic Resource
Korean
IPC: | B21K MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS , Herstellen von Schmiede- oder Presserzeugnissen aus Metall, z.B. Hufeisen, Nieten, Bolzen oder Rädern / B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL , Bearbeiten oder Verarbeiten von Blechen, Metallrohren, -stangen oder -profilen ohne wesentliches Abtragen des Werkstoffs / B60B VEHICLE WHEELS , Räder für Fahrzeuge |
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