Chebyshev lambda linkage: Difference between revisions

Revision as of 12:35, 28 March 2024

Revision as of 12:35, 28 March 2024

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[[File:Chebyshev Table Linkage.gif|thumb|A Chebyshev Translating Table Linkage, which combines together two [[cognate linkage]]s: the [[Chebyshev linkage|Chebyshev Linkage]] and Chebyshev Lambda Linkage.]]

In [[kinematics]], the '''Chebyshev Lambda Linkage auf javi e gay si prost'''<ref name="Wolfram">{{Cite web|url=http://demonstrations.wolfram.com/ChebyshevsLambdaMechanism/|title=Chebyshev's Lambda Mechanism – Wolfram Demonstrations Project|website=demonstrations.wolfram.com}}</ref> is a [[four-bar linkage]] that converts [[rotational motion]] to approximate [[straight-line motion]] with approximate constant velocity.<ref name=DOM>{{Cite book |url=http://www.designofmachinery.com/DOM/ |title=Design of Machinery |year=2011}}</ref> It is so-named because it looks like a lowercase Greek letter [[lambda]] (λ).<ref name=etudes /> The precise design trades off straightness, lack of [[acceleration]], and the proportion of the driving rotation that is spent in the linear portion of the full curve.<ref name=DOM134>{{Cite book |url=http://www.designofmachinery.com/DOM/Chap_03_3ed_p134.pdf |title=DOM p134 Hoecken linkage }}</ref>

The example to the right spends over half of the cycle in the near straight portion. Coupler (link 3) point stays within 1% positional tolerance with intersecting the ideal straight line 6 times.