A kind of gear pair for power transmission in speed...

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

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F16H 55/08 (2006.01) B23F 1/00 (2006.01)

Patent

CA 2635019

This invention relates to a kind of gear pair for power transmission in speed increaser or reducer and its tooth profile forming method, the tooth profiles of driving gear (1) and driven gear (2) are separately designed from the reference points, the upper tooth profiles (15, 25) are composed of conjugate curves, while the lower tooth profiles (14, 24) are composed of smooth convex analytic curves. The reference point (22) of the driven gear (2) situates near the middle of the working depth, while the reference point (12) on the tooth profile (11) of the driving gear (1) and the reference point (22) on the driven gear tooth flank (21) are a pair of conjugate point. This invention can greatly enhance the load capacity of the gear pair.

L'invention concerne un type d'engrenage utilisé pour la transmission de puissance dans un multiplicateur ou un réducteur de vitesse. Cette invention concerne également un procédé pour former les profils des dents de cet engrenage. Les profils des dents d'un engrenage menant (1) et d'un engrenage mené (2) sont conçus de manière séparée à partir de points de référence. Les profils de dents supérieurs (15, 25) comprennent des courbes conjuguées, tandis que les profils de dents inférieurs (14, 24) comprennent des courbes analytiques convexes lissées. Le point de référence (22) de l'engrenage mené (2) se trouve à proximité du centre de la hauteur utile, tandis que le point de référence (12) situé sur le profil de dents (11) de l'engrenage menant (1) et le point de référence (22) se trouvant sur le flanc (21) de dents de l'engrenage mené forment une paire de points conjugués. Cette invention permet d'améliorer considérablement la capacité de charge dudit engrenage.

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