2016 Volume 10 Issue 2 Pages JAMDSM0028
This work is an extension of the authors' work where RRSS motion generation and RRSS axode generation were used to produce a spatial cam mechanism (D'Alessio et. al., 2013). Here, a cam system design method is presented where spherical four-bar motion generation and axode generation methods are applied. The primary advantage of the spherical four-bar linkage, compared to the RRSS linkage, is that the former can be scaled without adding error to the positions achieved by its coupler link. As an example, a concept prosthetic knee is developed to precisely achieve a group of prescribed femur positions.