Journal of Northeastern University Natural Science ›› 2015, Vol. 36 ›› Issue (7): 1010-1014.DOI: 10.12068/j.issn.1005-3026.2015.07.021

• Mechanical Engineering • Previous Articles     Next Articles

The Synthesis Method of Eight-Bar Linkage Based on Solution Region Synthesis Theory

CUI Guang-zhen, HAN Jian-you, YANG Tong   

  1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China.
  • Received:2014-06-27 Revised:2014-06-27 Online:2015-07-15 Published:2015-07-15
  • Contact: HAN Jian-you
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Abstract: An approach to synthesize a 1-DOF eight-bar linkage was given based on solution region synthesis theory. Firstly, the 4-positions of a 4R open chain were found by analyzing the design requirements. Secondly, for synthesizing the eight-bar linkage, three RR links were added to the 4R open chain. Meanwhile, the solution region could be built by the solution curves, which were gotten when RR links were added. Finally, the feasible solution region was gotten by removing the linkages, which did not meet the design requirements. The designers could directly and accurately choose the linkage from the feasible solution region, and solved the problem of blind choice. The example shows that the solution region theory and method offers a simple and effective way for the rapid design of an eight-bar linkage with meeting the requirements.

Key words: eight-bar linkage, 4-positions synthesis, 4R open chain, solution curve, solution region

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