{"id":1194,"date":"2026-06-02T08:55:34","date_gmt":"2026-06-02T06:55:34","guid":{"rendered":"https:\/\/technologie.moreauabc.fr\/?page_id=1194"},"modified":"2026-06-02T09:47:43","modified_gmt":"2026-06-02T07:47:43","slug":"les-dessins-techniques","status":"publish","type":"page","link":"https:\/\/technologie.moreauabc.fr\/index.php\/les-dessins-techniques\/","title":{"rendered":"Les dessins techniques"},"content":{"rendered":"\n
\"\"<\/figure>
\n

D\u00e9finition :<\/strong><\/p>\n\n\n\n

Le dessin technique est un langage graphique normalis\u00e9<\/strong> utilis\u00e9 pour repr\u00e9senter avec pr\u00e9cision un objet, une pi\u00e8ce, un b\u00e2timent ou un syst\u00e8me technique. Il permet de communiquer des informations de conception, de fabrication, de contr\u00f4le ou de montage entre les diff\u00e9rents intervenants d’un projet (ing\u00e9nieurs, techniciens, fabricants, architectes, etc.).<\/p>\n<\/div><\/div>\n\n\n\n

\n

I\u00b0) Principaux types de dessins techniques<\/h2>\n\n\n\n

a. Dessin d’ensemble<\/h3>\n\n\n\n

Repr\u00e9sente un produit complet avec toutes ses pi\u00e8ces assembl\u00e9es. Il permet de comprendre le fonctionnement g\u00e9n\u00e9ral et les relations entre les composants. Les pi\u00e8ces sont identifiables gr\u00e2ce \u00e0 des rep\u00e8res<\/strong> et nous trouvons les informations dans une nomenclature<\/strong>.<\/p>\n<\/div>

<\/figure><\/div>\n\n\n\n
<\/figure>
\n

b. Dessin de d\u00e9finition (ou dessin de d\u00e9tail)<\/h3>\n\n\n\n

D\u00e9crit une pi\u00e8ce unique avec toutes les informations n\u00e9cessaires \u00e0 sa fabrication : on y trouve la cotation de la pi\u00e8ce<\/strong> (dimensions et tol\u00e9rances)<\/p>\n\n\n\n

Exemple de cotation : 50 \u00b1 0,1 mm 50 [dimension] \u00b1 0,1 mm [tol\u00e9rance]<\/p>\n\n\n\n

La pi\u00e8ce est consid\u00e9r\u00e9e comme bonne si la dimension mesur\u00e9e une fois construire est comprise entre :<\/p>\n\n\n\n

49.9 mm <= Pi\u00e8ce bonne <= 50.1 mm<\/p>\n\n\n\n

Si la pi\u00e8ce fait 49.6 mm, elle sera alors mis au rebus, c’est \u00e0 dire au recyclage ou au d\u00e9chet.<\/p>\n<\/div><\/div>\n\n\n\n

\n

c. Sch\u00e9ma technique<\/h3>\n\n\n\n

Repr\u00e9sentations simplifi\u00e9es utilisant des symboles utilis\u00e9es, il permet de montrer le fonctionnement d’un syst\u00e8me technique dans diff\u00e9rents domaines :<\/p>\n\n\n\n

    \n
  • \u00e9lectrique, (moteur, \u00e9clairage, batiment, industrie..)<\/li>\n\n\n\n
  • hydraulique, (fluide, eau, huile…)<\/li>\n\n\n\n
  • pneumatique, (air comprim\u00e9)<\/li>\n\n\n\n
  • \u00e9lectronique, (\u00e9lectricit\u00e9 interne des appareils)<\/li>\n\n\n\n
  • informatique industrielle (automates)<\/li>\n<\/ul>\n\n\n\n

    <\/p>\n<\/div>

    <\/figure><\/div>\n\n\n

    II\u00b0) El\u00e9ments fondamentaux :<\/span><\/h3>\n

    Les vues<\/span><\/h3>\n

    Un objet est repr\u00e9sent\u00e9 selon plusieurs vues :<\/span><\/p>\n

      \n
    • Vue de face<\/span><\/li>\n
    • Vue de dessus<\/span><\/li>\n
    • Vue de droite ou de gauche<\/span><\/li>\n
    • Vue arri\u00e8re<\/span><\/li>\n
    • Vue de dessous<\/span><\/li>\n<\/ul>\n

      Lorsque nous repr\u00e9sentons une pi\u00e8ce avec 3 c\u00f4t\u00e9s visibles (ou en 3 dimensions), nous appelons cette vue une perspective<\/span><\/strong><\/span><\/p>\n\n\n

      \"\"<\/figure>\n\n\n

      Le cartouche<\/span><\/h3>\n

      Le cartouche<\/strong> est un encadr\u00e9 normalis\u00e9 plac\u00e9 g\u00e9n\u00e9ralement dans l’angle inf\u00e9rieur droit d’un dessin technique. Il contient les informations essentielles permettant d’identifier, de classer et d’exploiter correctement le document.<\/span><\/p>\n

      Le cartouche joue le r\u00f4le de carte d’identit\u00e9 du dessin<\/strong>.<\/span><\/p>\n\n\n

      \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

      D\u00e9finition : Le dessin technique est un langage graphique normalis\u00e9 utilis\u00e9 pour repr\u00e9senter avec pr\u00e9cision un objet, une pi\u00e8ce, un b\u00e2timent ou un syst\u00e8me technique. Il permet de communiquer des informations de conception, de fabrication, de contr\u00f4le ou de montage entre les diff\u00e9rents intervenants d’un projet (ing\u00e9nieurs, techniciens, fabricants, architectes, etc.). I\u00b0) Principaux types de […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-1194","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/technologie.moreauabc.fr\/index.php\/wp-json\/wp\/v2\/pages\/1194","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/technologie.moreauabc.fr\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/technologie.moreauabc.fr\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/technologie.moreauabc.fr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/technologie.moreauabc.fr\/index.php\/wp-json\/wp\/v2\/comments?post=1194"}],"version-history":[{"count":6,"href":"https:\/\/technologie.moreauabc.fr\/index.php\/wp-json\/wp\/v2\/pages\/1194\/revisions"}],"predecessor-version":[{"id":1203,"href":"https:\/\/technologie.moreauabc.fr\/index.php\/wp-json\/wp\/v2\/pages\/1194\/revisions\/1203"}],"wp:attachment":[{"href":"https:\/\/technologie.moreauabc.fr\/index.php\/wp-json\/wp\/v2\/media?parent=1194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}