On cam system design to replicate spatial four-bar mechanism coupler motion

Qiong Shen, Kevin Russell, Wen Tzong Lee, Raj S. Sodhi

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)251-265
Number of pages15
JournalInverse Problems in Science and Engineering
Issue number2
StatePublished - Mar 2011

All Science Journal Classification (ASJC) codes

  • General Engineering
  • Computer Science Applications
  • Applied Mathematics


  • Axode
  • Cam mechanism
  • ISA point locus
  • Instant screw axis
  • RRSS mechanism


Dive into the research topics of 'On cam system design to replicate spatial four-bar mechanism coupler motion'. Together they form a unique fingerprint.

Cite this