A press assembly for forming outer helical splines on a blank includes an upper press shoe assembly and a die shoe assembly. The upper press shoe assembly includes an upper rotatable portion rotatable relative to an upper stationary portion. The lower portion includes a lower rotatable portion rotatable relative to a lower stationary portion. The unfinished blank is supported by the lower portion, and the upper portion is moveable into engagement with the blank. The upper rotatable portion joins with the lower rotatable portion for conjoint rotation relative to the upper and lower stationary portions via upper and lower helical meshes defined between the rotatable and stationary portions. The helical meshes convert downward force into rotation and translation of the blank into a spline forming die of the lower stationary portion to create the outer helical splines.