Aluminum drive shaft

F - Mech Eng,Light,Heat,Weapons – 16 – C

Patent

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Details

F16C 3/02 (2006.01) B60K 17/22 (2006.01)

Patent

CA 2219309

An aluminum drive shaft includes an aluminum alloy torque tube and aluminum alloy yokes that are pressed into each end section of the torque tube and welded to the end of the torque tube. Each end section is reduced in diameter and joined to a larger central section by a transition section. The end sections and transition sections are formed by swaging the ends of an aluminum alloy tube blank radially inwardly in two stages. The transition sections include an annular rib in the form of a concentric circular band located midway between inner and outer conical portions. The annular ribs stiffen the transition sections to reduce oil canning and noise.

Un arbre d'entraînement en aluminium comprend un tube de torsion en alliage d'aluminium et des étriers de fixation en alliage d'aluminium entrés à pression dans chaque section d'extrémité du tube de torsion et soudés au bout du tube de torsion. Chaque section d'extrémité est réduite en diamètre et raccordée à une section centrale plus grosse par une section de transition. Les sections d'extrémité et les sections de transition sont formées par emboutissage des bouts d'un tube à paroi pleine en alliage d'aluminium radialement vers l'intérieur en deux étapes. Les sections de transition comprennent une nervure annulaire sous forme d'une bande circulaire concentrique située à mi-chemin entre les parties coniques intérieure et extérieure. Les nervures annulaires raidissent les sections de transition de manière à réduire les bombements et le bruit.

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