Large-ratio strain wave gearing speed changing apparatus
US9605742B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 12, 2014 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Oct 8, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19642
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A strain wave gearing speed changing apparatus has a coaxial pair of circular splines including a first with tooth number TA and a second with TD. A coaxial pair of flex splines includes a first with tooth number TB and a second with TC. First flex spline meshes first circular spline and second flex spline meshes second circular spline at two, preferably more, meshing engagements. A wave generator is connected to one of the input and output shafts. Two flex splines are fixed together to operate flexingly on the wave generator with equal spline tooth engagement pitch circle circumference lengths. One circular spline is fixed to the apparatus frame and the other is connected to the other of the input and output shafts not connected to the wave generator. The four splines satisfy TA=TK+Ti, TB=TK, TC=TK−Tj and TD=TK+Ti−Tj.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.