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Titre du document / Document title

Classification and branch identification of Stephenson six-bar chains

Auteur(s) / Author(s)

KWUN-LON TING ; XIAOPHONG DOU ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

Tennessee technological univ., mechanical eng. dep., Cookeville TN 38505, ETATS-UNIS

Résumé / Abstract

A Stephenson six-bar chain contains a four-bar loop and a five-bar loop, and its branch condition may be affected by the rotatability of both loops and the interaction between them. It may have up to six branches and its branch condition is far more complicated than that of four-bar chain. In this article, the method to identify the effects of both loops on the rotatability of any Stephenson six-bar linkage and the algorithms to identify its branch condition are presented. The results resolve one of the most complicated and troublesome problems encountered in the finite position synthesis of Stephenson linkages. The proposed method is based on the rotatability of the common joints between the two loops and no coupler curve is used. The method is directly applicable to any type of Stephenson linkages regardless of whichever link is used as the input or fixed link. It is also valid for linkages containing prism joints. The algorithms are equally effective for path, motion, and function generation and also for any number of precision positions. Once the branch problem is resolved, other mobility problems, such as the full rotation, dead center positions, and the motion order, can be identified easily as in planar four-bar linkages.

Revue / Journal Title

Mechanism and machine theory    ISSN  0094-114X   CODEN MHMTAS 

Source / Source

1996, vol. 31, no3, pp. 283-295 (21 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Kidlington, ROYAUME-UNI  (1972) (Revue)

Mots-clés anglais / English Keywords

Mechanisms

;

Linkage mechanism

;

Six bar mechanism

;

Mobility

;

Mechanism synthesis

;

Mechanism analysis

;

Closed loop

;

Kinematic chain

;

Mots-clés français / French Keywords

Mécanisme

;

Mécanisme articulé

;

Mécanisme 6 barres

;

Mobilité

;

Synthèse mécanisme

;

Analyse mécanisme

;

Boucle fermée

;

Chaîne cinématique

;

Mots-clés espagnols / Spanish Keywords

Mecanismo articulado

;

Mecanismo 6 barras

;

Movilidad

;

Síntesis mecanismo

;

Análisis mecánismo

;

Bucle cerrado

;

Localisation / Location

INIST-CNRS, Cote INIST : 12676, 35400005299483.0030

Nº notice refdoc (ud4) : 2992486



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