Patent ID: 6440357
Filing Date: 2002-08-27
Classification: B21K,B22F,B30B

Abstract:
A method of forming from a powdered metal charge an annular gear having a pair of sets of teeth formed on an axially extending wall, said method comprising the steps of:a) defining a mold cavity containing said powdered metal charge and delimited by an axial wall formed from a first pair of relatively moveable members each having a thread form complementary to a respective one of said sets of teeth and a pair of axially spaced radial walls formed by a second pair of relatively moveable members interconnected to respective ones of said first members by thread forms corresponding to respective ones of said sets of teeth, b) compressing said powdered metal charge between said radial faces by axially displacing said second members toward one another to form a compact having each of said thread forms molded thereon, c) withdrawing said first members from said cavity whilst following respective ones of said thread forms on said compact and d) removing said compact from between said radial faces.