A pair of six-bar linkages, one of long vintage and the other very recent, are used as exemplars for considering their overall structures and the nature of their articulations. The two issues raised are the installation of an effective means for analysing a six-bar's gross mobility, and the extent to which exchanges might be made between linear and non-linear screw joints. Although the analytical tool applied is the well-known algebra of displacement—closure equations, it is the novel form of the relationships employed here that results in a successful outcome.
BakerJ. E., ‘The E-H-H-H- linkage’ Mech. Mach. Theory146 (1979): 361–372.
3.
BakerJ. E., ‘The S-H-H-H- linkage’ Mech. Mach. Theory166 (1981): 599–609.
4.
BakerJ. E., ‘On completing the determination of existence criteria for overconstrained 4-bars with helical joints’ Mech. Mach. Theory172 (1982): 133–142.
5.
DelassusE., ‘Sur les Systèmes Articulés Gauches, Première Partie’ Ann. Sci. Ec. Norm. Sup. ParisXVII (1900): 445–499 s. 3.
6.
DelassusE., ‘Sur les Systèmes Articulés Gauches, Deuxième Partie’ Ann. Sci. Ec. Norm. Sup. ParisXIX (1902): 119–152 s. 3.
7.
DelassusE., ‘Les Chaînes Articulées Fermées et Déformables à Quatre Membres’ Bull. Sci. Math.461 (1922): 283–304 s. 2.
8.
BakerJ. E., Mobility analyses of spatial linkages. (Sydney, Australia: The University of New South Wales1975) Doctoral dissertation.
9.
WaldronK. J., ‘A study of overconstrained linkage geometry by solution of closure equations. Part 1: Method of study’ Mech. Mach. Theory8 (1973): 95–104.
10.
WaldronK. J., ‘A Study of overconstrained linkage geometry by solution of closure equations. Part 2: Four-bar linkages with lower pair joints other than screw joints’ Mech. Mach. Theory8 (1973): 233–247.
11.
BakerJ. E., ‘An overconstrained 5-bar with a plane of quasi-symmetry’ Mech. Mach. Theory134 (1978): 467–473.
12.
BakerJ. E., ‘On seeking new plane-symmetric six-bars’ Mech. Mach. Theory213 (1986): 243–252.
13.
BakerJ. E., ‘Overconstrained 5-bars with parallel adjacent joint axes - part I: Method of analysis’ Mech. Mach. Theory132 (1978): 213–218.
14.
BakerJ. E., ‘Overconstrained 5-bars with parallel adjacent joint axes - part II: The linkages’ Mech. Mach. Theory132 (1978): 219–233.
15.
BakerJ. E., ‘Overconstrained five-bars with prismatic joints and parallel adjacent joint axes’ Mech. Mach. Theory244 (1989): 267–273.
16.
BakerJ. E., ‘Overconstrained six-bars with parallel adjacent joint-axes’ Mech. Mach. Theory382 (2003): 103–117 38(11), 1323.
17.
BakerJ. E., ‘A curious new family of overconstrained six-bars’ Trans. ASME, J. Mech. Des.1274 (2005): 602–606.
BricardR., Leçons de Cinématique (Paris: Gauthier-Villars1927).
20.
BakerJ. E., ‘An analysis of the Bricard linkages’ Mech. Mach. Theory154 (1980): 267–286.
21.
BakerJ. E., ‘On the feasibility of overconstrained linkages having screw-joints with tangent-based pitch’ Mech. Mach. Theory361 (2001): 117–122.
22.
BakerJ. E., ‘A kinematic representation of Bennett's tetrahedron of reference’ Proc. IMechE, Part C: J. Mechanical Engineering Science222 C9 (2008): 1821–1827 DOI: 10.1243/09544062JMES1092.
23.
BennettG. T., ‘The skew isogram mechanism’ Proc. Lond. Math. Soc.13 (1914): 151–173 s. 2.
24.
WaldronK. J., ‘A family of overconstrained linkages’ J. Mech.2 (1967): 201–211.
25.
WohlhartK., A new 6R space mechanism. Sevilla, Spain, 17–22September 1987, vol. 1, pp. 193–198.
26.
WohlhartK., On isomeric overconstrained space mechanisms. Prague, Czechoslovakia, 26-31 August 1991, vol. 1, pp. 153–158.
