The Technology and Mold Design of Super Large Height-diameter Ratio Local Upsetting Forming for Automobile Half Axle

Abstract

The local upsetting blank forming of super large height-diameter ratio for automobile’s half shaft has been analyzed. Based on the rigid plasticity theory model of super height-diameter ratio local upsetting, the multi-ram forging method was used, and the die was designed as harvard architecture that the blank was clamped by the lower die, and the upper die with cavity structure to improves the stress condition. And the FEM software Deform-3D was used to analyzed the forming. The result showed the uniform region of equivalent strain and no loss of stability or folding defects during the forming.