Apparatus for cycloidal acceleration and deceleration with partial constant velocity
US4271727A · kind A · utility
Inventor
Key dates
| Filing date | Jun 11, 1979 |
| Grant date | Jun 9, 1981 |
| Priority date | — |
| Expiry date | Jun 11, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1447
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A reversible rotary indexing mechanism capable of generating large indexing angles including those exceeding one revolution. A constant velocity rotary input is connected to a rotary output by an eccentric accelerating-decelerating drive means which, by reason of a shifting mechanism, is selectively disengageable with the output at a maximum velocity, zero acceleration condition, while at the same time a constant velocity drive from the input is connected to the output. Conversely, the constant velocity drive is disconnected at the same time that the accelerating-decelerating drive means is reconnected to accomplish deceleration. An output lock is also provided and actuators including composite cams can be utilized to accomplish the action of the shifting mechanism. In addition, the mechanism can be used with higher harmonic components to increase the design flexibility with greater inherent dwell capabilities and significantly longer constant velocity ranges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.