Dico meca

Dico meca

A dictionnary project for mechanical terms

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Crémaillère | Rack and pinion

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Last update: 15 March 2019





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Crémaillère


Catégorie(s)

Ensemble de pièces mécaniques 

Description

Elément d'engrenages composés d'un pignon et d'une barre dentée, ou secteur de couronne dentée de rayon très grand (infini, si la crémaillère est parfaitement droite). Son mouvement rotatif (via le pignon) devient alors un mouvement linéaire.

Rack and pinion


Categorie(s)

Set of mechanical part 

Description

Type of linear actuator that comprises a pair of gears which convert rotational motion into linear motion. A circular gear called "the pinion" engages teeth on a linear "gear" bar called "the rack"; rotational motion applied to the pinion causes the rack to move relative to the pinion, thereby translating the rotational motion of the pinion into linear motion.

Illustrations