Patent ID: 7140269
Filing Date: 2006-11-28
Classification: B22F,B30B,F16H,Y10T

Abstract:
1. A pressing tool for pressing, as one part, a gear wheel with a multiple helical toothing, said pressing tool including: a) a matrix which with an inner surface area forms a radial delimitation of a chamber for a compactible material; b) a cylindrical first molding tool part which is mounted such that it can be translated back and forth along a longitudinal axis relative to the matrix and rotated about the longitudinal axis, and on a cylindrical surface area comprises a helical toothing for molding a first helical toothing of the gear wheel; c) a cylindrical second molding tool part which is arranged alongside the first molding tool part with respect to the longitudinal axis, and is mounted such that it can be translated back and forth along the longitudinal axis relative to the matrix and rotated about the longitudinal axis, and on a cylindrical surface area comprises a helical toothing for molding a second helical toothing of the gear wheel; d) and a drive means coupled to the molding tool parts, for driving the molding tool parts, e) wherein the molding tool parts can be moved towards and away from each other along the longitudinal axis, f) and wherein the inner surface area of the matrix which delimits the chamber is shaped such that it allows a linear axial sliding movement of the compactible material relative to the matrix.