Abstract：Steel ball punch surface were laser textured to acquire sombrero shaped textures with different geometric parameters. The cup drawing experiments were conducted on microcomputer screen automatic cup drawing test machine. The influence of texture parameters on erishen value was investigated. The results show that the erishen values change with the texture parameters and distribution on steel ball punch surface. The erishen value of steel ball punch is decreased after laser textured treatment with the maximum decline of 7.99%. With the increasing of rupture circle diameter, failure key point removes away from the top of ball with the maximum distance outward moving of 2.125 mm. The thickness of no cracking cup drawing forming parts between ball top and rupture circle is greater than that of smooth ball. The thickness of sheet metal on ball top is increased with the decreasing of erichsen value, and the thickness of the maximum increasing reaches 8.26%.The thickness of hemispherical part at the thinnest point is increased by 2.81% after laser texturing.
2015, Vol. 36 
