is a special gear design with special characteristics and
purpose. While a regular gear is optimized to transmit torque to another
engaged member with minimum noise and wear and with maximum efficiency, a
non-circular gear's main objective might be ratio variations, axle
displacement oscillations and more. The number of possible uses is limited
only by the inventor's imagination and includes textile machines,
potentiometers and CVTs (continuously variable transmissions).
A regular gear pair can be represented as two circles rolling together
without slip. In the case of non-circular gears, those circles are replaced
with anything different from a circle. This is also the reason NCG in most
cases is not round, however round NCGs looking like regular gears are
possible too (small ratio variations result from meshing area
modifications).
Application
Notes:
