A special Wohlhart’s double-goldberg 6R linkage and its multiple operation forms among 4R and 6R linkages

For Wohlhart’s double-Goldberg 6R linkage constructed from two original Goldberg 5R linkages, there are two constructive forms and one non-constructive form, which can be reconfigured through bifurcation points. A special Wohlhart’s double-Goldberg 6R linkage is proposed by introducing a special geo...

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Bibliographic Details
Main Authors: Song, Chaoyang, Chen, Yan
Other Authors: School of Mechanical and Aerospace Engineering
Format: Conference or Workshop Item
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/98191
http://hdl.handle.net/10220/13327
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Institution: Nanyang Technological University
Language: English
Description
Summary:For Wohlhart’s double-Goldberg 6R linkage constructed from two original Goldberg 5R linkages, there are two constructive forms and one non-constructive form, which can be reconfigured through bifurcation points. A special Wohlhart’s double-Goldberg 6R linkage is proposed by introducing a special geometry constraint. One of the constructive forms of the resultant linkage is degenerated into a pseudo 4R linkage, which is essentially a Bennett linkage. Therefore, the special Wohlhart’s double-Goldberg 6R linkage achieves multiple forms among 4R and 6R linkages. Physical models are also made to validate the special Wohlhart’s double-Goldberg 6R linkage in different operation forms.