Patent ID: 8613143

Claim:
A method of assembling a planetary gearset, comprising: die-forming a plurality of circumferentially spaced apart teeth on a sun gear, each tooth having a pair of tooth flanks in a final net form for engagement with mating gear teeth, the sun gear teeth having a conical shape to allow a first die to linearly move relative to a second die after the sun gear teeth are die-formed; die-forming a plurality of circumferentially spaced apart teeth on a planet gear, each planet gear tooth having a pair of tooth flanks shaped in a final net form for engagement with mating sun gear tooth flanks, the planet gear teeth having a conical shape to allow a first die to linearly move relative to a second die after the planet gear teeth are die-formed; die-forming a plurality of circumferentially spaced apart teeth on a ring gear, each ring gear tooth having a pair of tooth flanks shaped in a final net form for engagement with mating planet gear tooth flanks, the ring gear teeth having a conical shape to allow a first die to linearly move relative to a second die after the ring gear teeth are die-formed; rotatably mounting the planet gear on a carrier; orienting the sun gear and the planet gear such that the conical shapes of the respective gear teeth taper in opposite directions from one another; and meshingly engaging the planet gear teeth with both the ring gear teeth and the sun gear teeth.