Cycloidal drive
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For the marine propulsion system, see Voith-Schneider.
A cycloidal drive or cycloidal speed reducer is a mechanism for reducing the speed of an input shaft by a certain ratio. It is somewhat similar in appearance internally to an internal gear pump with the outer gear driving the output shaft. The input shaft drives an eccentric bearing that in turn drives the cycloidal disc in an eccentric, cycloidal motion. The perimeter of this disc is geared to a stationary ring gear and has a series of output shaft pins or rollers placed through the face of the disc. These output shaft pins directly drive the output shaft as the cycloidal disc rotates. The radial motion of the disc is not translated to the output shaft.
[edit] See also
- Epicyclic gearing
- Cycloid gear A gear tooth shape based on the cycloid
[edit] External links
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