Kinematic synthesis of adjustable RRSS mechanisms for multi-phase motion generation

This paper presents a new technique for synthesizing RRSS mechanisms to achieve phases of coupler positions using the same hardware. This paper considers two- and three-phase problems with constant and adjustable crank and follower lengths. By specifying the joint axes of the RRSS mechanism, the constant length condition becomes the only design constraint. Coupler body positions are then selected with respect to the specified joint axes. These positions are incorporated in the constraint equation and the RRSS mechanism joint variables calculated.