Harmonic drive gear reduction mechanism
US9470301B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 21, 2013 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Apr 27, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19642
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A harmonic drive gear reduction mechanism includes a rigid inner spline with 2(n+1) teeth and a tooth module of m, a flexible outer spline inserted in the rigid inner spline has 2n teeth and a tooth module of m, a flexible bearing inserted in the flexible outer spline, and a wave generator inserted in the flexible bearing. A thickness between an inner diameter of the flexible bearing and a pitch diameter of the flexible outer spline is t, a cross sectional profile of the wave generator consists four curves, the first and third curves have a radius of curvature R, R=m (n+1)−t, a central angle of the first and third curves is k, and 10<k≦60, the second and fourth curves and conjunction points between the second, fourth curves and the first, third curves can be first-order differentiated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.