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A DYNAMIC SIMULATION OF CAM ACTUATED ROBOTIZED GEARBOX

In this paper a simulation of the cam actuator of a robotized 
gearbox is presented. The actuator is a barrel cam which 
moves a pin according to a prescribed motion law. The model of 
contact, between cam and follower, is based on a finite elements 
approach of the theory of beam on continuous elastic foundation, 
modified by the authors to include the effect of shear on 
the deformation and dynamic effects. The foundation modulus is 
computed using Hertz theory taking also into account the change 
of principal curvature values during the relative motion between 
cam and follower. This model has been embodied in a complete 
gear shifting simulation in order to compare the effects on contact 
forces, wear actions and shifting time of different cam profiles.