CPC F16H 49/001 (2013.01) [F16H 55/0833 (2013.01); F16H 55/17 (2013.01); F16H 2049/003 (2013.01); F16H 2055/176 (2013.01)] | 15 Claims |
1. A double-flexspline harmonic reducer, comprising a strong flexspline, a weak flexspline and a wave generator, wherein the strong flexspline and the weak flexspline are coaxially fixed in an axial direction and a radial direction, and teeth which can be engaged with each other and are different in the number thereof are provided on the strong flexspline and the weak flexspline respectively; the wave generator causes the weak flexspline to undergo non-circular elastic deformation and then to partially engage with the strong flexspline, and a contact portion of the strong flexspline and the weak flexspline undergoes non-circular elastic deformation under a radial pressure from the weak flexspline; and a wall thickness of the strong flexspline is greater than or equal to 2 times and less than 5 times that of the weak flexspline, wherein a reference radius of the tooth farthest from an axis of the reducer after non-circular deformation of the weak flexspline under an action of the wave generator is greater than that of a circular tooth ring before an assembly of the strong flexspline.
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