This paper for the first time investigates a family of line-symmetric Bricard linkages by means of two generated toroids and reveals their intersection that leads to a set of special Bricard linkages with various branches of reconfiguration. The discovery is made in the concentric toroid–toroid intersection. By manipulating the construction parameters of the toroids, all possible bifurcation points are explored. This leads to the common bi-tangent planes that present singularities in the intersection set. The study reveals the presence of Villarceau and secondary circles in the toroid–toroid intersection. Therefore, a way to reconfigure the Bricard linkage to a pair of different types of Bennett linkage is uncovered. Further, a linkage with two Bricard and two Bennett motion branches is explored. In addition, the paper reveals the Altmann linkage as a member of the family of special line-symmetric Bricard linkage studied in this paper. The method is applied to the plane-symmetric case in the following paper published together with this paper.
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June 2018
Research-Article
Branch Reconfiguration of Bricard Linkages Based on Toroids Intersections: Line-Symmetric Case
P. C. López-Custodio,
P. C. López-Custodio
Centre for Robotics Research,
King's College London,
University of London,
London WC2R 2 LS, UK
e-mail: pablo.lopez-custodio@kcl.ac.uk
King's College London,
University of London,
London WC2R 2 LS, UK
e-mail: pablo.lopez-custodio@kcl.ac.uk
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J. S. Dai,
J. S. Dai
Centre for Robotics Research,
King's College London,
University of London,
London WC2R 2 LS, UK
e-mail: jian.dai@kcl.ac.uk
King's College London,
University of London,
London WC2R 2 LS, UK
e-mail: jian.dai@kcl.ac.uk
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J. M. Rico
J. M. Rico
Mechanical Engineering Department,
DICIS, Universidad de Guanajuato,
Salamanca 36500, Guanajuato, Mexico
e-mail: jrico@ugto.mx
DICIS, Universidad de Guanajuato,
Salamanca 36500, Guanajuato, Mexico
e-mail: jrico@ugto.mx
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P. C. López-Custodio
Centre for Robotics Research,
King's College London,
University of London,
London WC2R 2 LS, UK
e-mail: pablo.lopez-custodio@kcl.ac.uk
King's College London,
University of London,
London WC2R 2 LS, UK
e-mail: pablo.lopez-custodio@kcl.ac.uk
J. S. Dai
Centre for Robotics Research,
King's College London,
University of London,
London WC2R 2 LS, UK
e-mail: jian.dai@kcl.ac.uk
King's College London,
University of London,
London WC2R 2 LS, UK
e-mail: jian.dai@kcl.ac.uk
J. M. Rico
Mechanical Engineering Department,
DICIS, Universidad de Guanajuato,
Salamanca 36500, Guanajuato, Mexico
e-mail: jrico@ugto.mx
DICIS, Universidad de Guanajuato,
Salamanca 36500, Guanajuato, Mexico
e-mail: jrico@ugto.mx
1Corresponding author.
Manuscript received June 22, 2017; final manuscript received December 14, 2017; published online March 23, 2018. Assoc. Editor: Raffaele Di Gregorio.
J. Mechanisms Robotics. Jun 2018, 10(3): 031003 (11 pages)
Published Online: March 23, 2018
Article history
Received:
June 22, 2017
Revised:
December 14, 2017
Citation
López-Custodio, P. C., Dai, J. S., and Rico, J. M. (March 23, 2018). "Branch Reconfiguration of Bricard Linkages Based on Toroids Intersections: Line-Symmetric Case." ASME. J. Mechanisms Robotics. June 2018; 10(3): 031003. https://doi.org/10.1115/1.4038981
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