Cold formed differential housing with integrated ring gear

Details Cold formed differential housing with integrated ring gear Cold formed differential housing with integrated ring gear

B - Operations, Transporting

21

D

B21D 53/28 (2006.01) B21K 1/26 (2006.01) B21K 1/30 (2006.01) B21K 21/06 (2006.01) F16H 48/08 (2006.01)

Patent

CA 2499054

A method for making a differential housing (20) having a ring gear (30) integrally formed therein includes the steps of providing a differenntial housing having an annular rim integrally preformed therein; supporting the differential housing between upper and lower halves of a rotatable holding tool such that the annular rim extends radially outwardly from the holding tool for movement therewith; providing a thickening tool having a tool surface engagable with the annular rim during rotation of the holding tool to form a thickened lip; and providing a gear forming tool engagable with the thickened lip during rotation of the holding tool, whereby a plurality of teeth are formed along the lip to form the ring gear.

L'invention concerne un procédé de fabrication de coquille de différentiel (20) à couronne (30) intégrée, selon les étapes suivantes: fourniture d'une coquille à bordure annulaire intégrée préformée; placement de la coquille entre les moitiés supérieure et inférieure d'un outil de maintien rotatif, de sorte que la bordure annulaire s'étende radialement vers l'extérieur depuis l'outil de maintien pour se déplacer avec lui; fourniture d'un outil épaississeur à surface d'outil pouvant s'enclencher avec la bordure annulaire durant la rotation de l'outil de maintien pour former une lèvre épaissie; et fourniture d'un outil de formation de couronne pouvant s'enclencher avec la lèvre épaissie durant la rotation de l'outil de maintien pour former une pluralité de dents le long de la lèvre et réaliser ainsi la couronne dentée.

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