Stress tension and deformation study in teeth of a cylindrical spur gears

Résumé

A gear is a rotating part of a machine with teeth alongside the circumference to transmit torque to one or more rotating gears along a tangential direction. The teeth of a spur gear prevent any kind of slip or deformation and allow to transmit the torque with a force considerably higher than normal gears. To transmit the rotational constant movement, the teeth profile must be designed so that during the transmission, the common normal must pass through a fix point placed on the centre line.