Abstract
A novel coupling for two parallel shafts with non-collinear axes has been developed and used in a cycloidal transmission with magnetic gears. Such a coupling has been designed as an alternative to traditional couplings to transmit the rotation from the orbiting gear to the output shaft. The driving shaft transmits a couple consisting of two equal and opposite forces to a central element which, in turn, transmits the same couple, also consisting of two equal and opposite forces to the driven shaft. This novel coupling was successfully used instead of a traditional coupling resulting in, not only a smother operation, but also a more efficient power transmission.
Highlights
Sometimes it is required to transmit rotary motion from one shaft to another that has a parallel offset and angular misalignment with respect to the first one
A novel coupling for two parallel shafts with non-collinear axes has been developed and used in a cycloidal transmission with magnetic gears. Such a coupling has been designed as an alternative to traditional couplings to transmit the rotation from the orbiting gear to the output shaft
To filter out the translational motion, the coupling that is generally used consists essentially of a disk of the output shaft with pins that penetrate into holes of the orbiting gear, where the radius of the holes is equal to the radius of the pins plus the eccentricity between the input and output shafts
Summary
Sometimes it is required to transmit rotary motion from one shaft to another that has a parallel offset and angular misalignment with respect to the first one. Parallel offset is the case, for example, in a cycloidal gear speed reducer where an orbiting gear having a fast-circular translational motion superimposed on a slow rotation, must transmit the slow. To filter out the translational motion, the coupling that is generally used consists essentially of a disk of the output shaft with pins that penetrate into holes of the orbiting gear, where the radius of the holes is equal to the radius of the pins plus the eccentricity between the input and output shafts An inversion of such a coupling results when one shaft is fixed preventing the rotation of another one but allowing its circular translation. All forces are coplanar and only a couple, but no resultant force, is transmitted between components
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