METHOD OF AND PRESS TOOL FOR MANUFACTURE OF SOLID-FORGED WHEEL DISKS FOR AUTOMOTIVE VEHICLES Russian patent published in 1994 - IPC

FIELD: hot forging. SUBSTANCE: forging is done in two steps in tool consisting of punch with knockout, arranged inside and installed in fixed lower part of tool, and set of replaceable dies. During first step side walls of wheel disks are formed. Axial effort is converted into tool pressure onto blank metal providing its spreading to size. During second step final shaping of walls and end of blank to preset outline is provided. During first step of forging detachable die is used which is mounted on upper plate. During second step use is made of assembly die consisting of sectional inserts set into motion by upper plate and returned to initial position by resilient members. EFFECT: enhanced quality of wheel disks. 4 cl, 9 dwg