Patent ID: 8806912

Claim:
A castellated die set for forming a powder metal forging that is a constant velocity joint inner race having alternating ball races, comprising: a first die mateable with a second die in a longitudinal direction, said die set having at least one laterally varying internal longitudinal feature extending in said longitudinal direction from said first die to said second die, the feature in the first die varying oppositely to the feature in the second die, each of said first die and said second die including a castellated parting interface dissecting each said laterally varying internal longitudinal feature, the parting interface of said first die mating with the parting interface of the second die wherein the alternating ball races are tracks in which shallow ends and deep ends alternate position on every other track, wherein the first die and the second die have die mating surfaces transverse to the longitudinal direction, and wherein, for each of the first die and the second die, the positions of the die mating surfaces corresponding to the adjacent tracks are offset in the longitudinal direction.