Apparatus and method for forming powder metal gears

Details Apparatus and method for forming powder metal gears Apparatus and method for forming powder metal gears

B - Operations, Transporting

22

F

B22F 5/08 (2006.01) B21H 5/02 (2006.01) B23F 21/16 (2006.01)

Patent

CA 2461119

A compacted and sintered gear blank is supported for rotation about a first axis adjacent a tool supported for rotation about a second axis transverse to the first axis. The tool has a series of gear cutting teeth and an adjacent set of gear densifying portions. The gear cutting teeth of the tool are moved into engagement with the powder metal gear blank to cut gear teeth into the blank. The tool is then shifted to bring the densifying portions of the tool into engagement with the teeth and the surfaces of the teeth densified by the tool.

L'invention concerne une ébauche d'engrenage comprimée et frittée montée de façon à tourner autour d'un premier axe adjacent à un outil également monté de façon à tourner autour d'un second axe perpendiculaire au premier. Ledit outil comprend une série de dents de coupe d'engrenage et un ensemble de parties de densification d'engrenage adjacentes. Les dents de coupe de l'outil se déplacent par contact avec l'ébauche d'engrenage en poudre métallique afin de couper des dents d'engrenage dans cette ébauche. L'outil est ensuite décalé afin d'amener ses parties de densification en contact avec les dents et les surfaces densifiées au moyen de cet outil.

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