Experimental tolerance design of a six-bar toggle-linkage mechanism using near-singularity characteristics
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Tolerance analysis is very important for the mass production of mechanism parts to guarantee satisfactory performance at a low production cost. The tolerance analysis of linkage mechanisms is important because linkage mechanisms are very sensitive to tolerance owing to many shaft–hole connections. Typically, tolerance is determined by intuition and experiences, but it can lead to low performance or high production cost. In particular, the tolerance of a linkage has a significant effect on near-singularity operation as even a very small dimension difference can change the performance dramatically. In this paper, we present an experimental tolerance design of a six-bar toggle-linkage mechanism for clamping application. The tolerance design is very important to the six-bar toggle-linkage mechanism as the clamping operation is performed with a near-singularity configuration. Based on a design of experiment, the tolerances are determined by optimal criteria with performance and cost deviations. We determine the positions with high tolerance and low tolerance empirically. The final tolerances can be used for mass production of the toggle clamping device.
KeywordsTolerance design Toggle-linkage mechanism Six-bar mechanism Design of experiment
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- 2.Koskowicz L, Sacks E, Srinivasan V (1995) Kinematic tolerance analysis. In: Proceedings ACM symposium on solid modeling and application, pp 65–72Google Scholar
- 4.Wang J, Masory O (1993) On the accuracy of a Stewart platform—part I the effect of manufacturing tolerances. In: Proceedings IEEE international conference on robotics and automation, pp 114–120Google Scholar
- 7.Taguchi G (1987) System of experimental design: engineering methods to optimize quality and minimize costs. UNIPUB/Kraus International PublicationsGoogle Scholar
- 11.Paredes M, Canivenc R, Sartor M (2014) Tolerance optimization by modification of Taguchi’s robust design approach and considering performance levels: application to the design of a cold-expanded bushing. In: Proceedings institution of mechanical engineers, part G: journal of aerospace engineering vol 228(8), pp 1314–1323Google Scholar
- 14.Howell Larry L (2001) Compliant mechanisms. Wiley, HobokenGoogle Scholar
- 16.Jeon Y, Chu K, Kim J, Seo T Singularity-inducing complaint toggle linkage mechanism for large clamping range. Mech Mach Theory. (submitted for publication)Google Scholar
- 17.Pneumatic Power Clamp. https://www.destaco.com/pneumatic-power-clamps.html. Accessed 5 Sept 2019