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RESEARCH PAPERS

On Generating a Class of Foldable Six-Bar Spatial Linkages

[+] Author and Article Information
J. Eddie Baker

Honorary Associate, School of Information Technologies,  The University of Sydney, NSW 2006, Australiajebaker@it.usyd.edu.au

J. Mech. Des 128(2), 374-383 (Jun 07, 2005) (10 pages) doi:10.1115/1.2166853 History: Received March 11, 2005; Revised June 07, 2005

Recently isolated through fortuity and subsequent inference, a family of six-revolute spatial linkages is distinguished by dimensional properties which allow the individual loops to be folded, hence making them of possible interest in the field of deployable structures. The purpose of this paper is to demonstrate a novel method for generating each of the linkages from planar and Bennett chains. Alternative compositions are discussed, along with the family's potential for being fashioned into nests of linkages.

Copyright © 2006 by American Society of Mechanical Engineers
Topics: Linkages , Chain , Equations
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References

Figures

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Figure 1

The Bennett linkage in schematic outline

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Figure 14

An alternative plano-Bennett hybrid as a basis for constructing Type 1

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Figure 15

The additional Bennett chain used in the alternative synthesis of Type 1

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Figure 16

An alternative representation of Type 1

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Figure 17

A mobile network containing foldable six-bar loops (after Ref. 3)

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Figure 13

A modified representation of Type 2

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Figure 12

The foldable six-bar of Type 2

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Figure 11

The plannar chain used in synthesizing Type 2

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Figure 10

A double-Bennett hybrid as a basis for the solution of Type 2

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Figure 9

A modified representation of Type 3

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Figure 8

The foldable six-bar of Type 3

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Figure 7

The additional Bennett loop used in synthesizing Type 3

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Figure 6

A modified representation of Type 1

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Figure 5

The foldable six-bar of Type 1

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Figure 4

The additional Bennett loop used in synthesizing Type 1

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Figure 3

A plano-Bennett hybrid as a basis for the solutions of Types 1 and 3

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Figure 2

The Bennett linkage in a quasi-parallelogrammatic attitude

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