关键词: 锤砧, 锻造, 精密锻造机, 数值模拟

Abstract: A new type V-shaped cone anvil is developed to improve the transverse mechanical property of axial forgings in fine forging machine. Two V-shaped cone whose opening opposite is welded by piling up on the main working inclined planes which being located both sides of the fixed diameter area of the anvil. The mobility of the metal under the V-shaped cone and the deformation on the meridian plane and the transverse section is analysed, the numerical simulation is done for common anvil forging and V-shaped cone anvil forging with the DEFORM soft, and the results is compared for the stress and strain at the typical points on the chosen five transverse sections. It is revealed that when V-shaped cone anvil is used, the transverse mobility of metal is enhanced, the equivalent stress and equivalent strain increased, the deformation diversity decreased by 30%, the stress state in the zone around the axis improved, and the axial tension stress at the central point cut down by 50%. It is revealed by the production of the mandrel forgings that the mechanical property is raised effectively.

Key words: Anvil, Fine forging machine, Forging, Numerical simulation