The coupler motion of a planar four-bar mechanism can be reproduced by rotating the mechanism's moving centrode over its fixed centrode. For spatial four-bar mechanisms, coupler motion can be replicated by moving the mechanism's moving axode over its fixed axode in a screw motion-a combination of simultaneous rotations and translations. This study presents a model to calculate the fixed and moving axodes of the revolute-revolute-spherical-spherical (RRSS) mechanism-one of the most basic spatial four-bar mechanisms. The axodes are useful in producing the contact surfaces for a cam system to replicate RRSS coupler motion.
All Science Journal Classification (ASJC) codes
- Computer Science Applications
- Applied Mathematics
- Cam mechanism
- ISA point locus
- Instant screw axis
- RRSS mechanism