Method for manufacturing and forming hollow mandrel of automobile hub through cross wedge rolling blank precision die forging

• Main Authors: FAN QINGCHUN, WANG JIE, HUANG JIANGHUA, YANG JIE
• Format: Patent
• Language: Chinese; English
• Published: 19.07.2024
• Subjects: MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS; MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS,WHEELS, RINGS, BARRELS, BALLS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING

The invention relates to the field of non-cutting metal calendaring machining, and discloses a method for manufacturing and forming an automobile hub hollow mandrel through cross wedge rolling blank precision die forging, and an automobile hub hollow mandrel blank is rapidly manufactured through cross wedge rolling in combination with closed die forging. By the adoption of the technological method, the steps of free upsetting, material gathering upsetting, pre-forging, pre-forging, punching and edge cutting are omitted, after a bar is heated to 1200 DEG C, the bar is directly fed into a cross wedge rolling mill for blank manufacturing, the rotating speed of the cross wedge rolling mill is adjustable, the production efficiency of paired blank manufacturing and the cross wedge rolling mill can reach 60 pieces per minute, and the production cost is reduced. The core shaft blank rolled through cross wedge rolling is put into a die to be subjected to closed die forging, the flange plate part is finally formed, the