{"id":696,"date":"2019-07-24T11:36:54","date_gmt":"2019-07-24T09:36:54","guid":{"rendered":"http:\/\/blog.topsolid.fr\/?p=696"},"modified":"2021-08-04T16:25:53","modified_gmt":"2021-08-04T14:25:53","slug":"programmation-pieces-complexes","status":"publish","type":"post","link":"https:\/\/blog.topsolid.com\/fr\/programmation-pieces-complexes\/","title":{"rendered":"Tout savoir sur la programmation des pi\u00e8ces complexes"},"content":{"rendered":"

[et_pb_section fb_built=\u00a0\u00bb1″ _builder_version=\u00a0\u00bb3.22″ custom_padding=\u00a0\u00bb0|0px|54px|0px|false|false\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb3.25″ custom_padding=\u00a0\u00bb0|0px|0|0px|false|false\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb3.25″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb3.27.4″]En CFAO, et particuli\u00e8rement en usinage, la fabrication de pi\u00e8ces de forme complexe n\u00e9cessite de respecter les sp\u00e9cifications fonctionnelles exprim\u00e9es par le designer ou le concepteur. En effet, le mod\u00e8le g\u00e9om\u00e9trique construit en CAO constitue une maquette num\u00e9rique de r\u00e9f\u00e9rence qui devra \u00eatre reproduite le plus fid\u00e8lement possible lors de la phase de fabrication. Les formes complexes peuvent parfois \u00eatre difficiles \u00e0 reproduire\u00a0: une programmation ad\u00e9quate est alors la cl\u00e9 du succ\u00e8s en CFAO.<\/em>
\n[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb3.25″ custom_padding=\u00a0\u00bb35px|0px|0|0px|false|false\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb3.25″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb3.27.4″]<\/p>\n

Qu\u2019entend-on par pi\u00e8ce complexe?<\/h2>\n

On parle de pi\u00e8ce complexe lorsqu\u2019il y a pr\u00e9sence de topologies qui demandent de passer par de nombreuses trajectoires d\u2019usinage, souvent avec risque de collision ainsi que des zones difficilement accessibles. Mais la notion de complexit\u00e9 d\u2019une pi\u00e8ce ne d\u00e9pend pas que de sa forme\u00a0ou de sa taille. En effet, la nature du mat\u00e9riau utilis\u00e9, la pr\u00e9sence de contraintes r\u00e9siduelles, le risque d\u2019\u00e9chauffement ou encore la pr\u00e9cision qui est demand\u00e9e sont autant de facteurs qui contribuent \u00e0 compliquer la t\u00e2che des usineurs.<\/p>\n

 <\/p>\n

Exemples de pi\u00e8ces complexes<\/h3>\n
    \n
  • Les moules en aluminium, pour l\u2019injection plastique\u2009;<\/li>\n
  • Les culasses pour l\u2019automobile\u2009;<\/li>\n
  • Les aubes de turbine en inconel pour l\u2019a\u00e9ronautique\u2009;<\/li>\n
  • Des paliers en titane pour l\u2019a\u00e9rospatial\u2009;<\/li>\n<\/ul>\n

     
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    La gamme de solutions CAO, FAO, ERP TopSolid<\/strong><\/span><\/p>\n

    [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb3.25″ module_alignment=\u00a0\u00bbcenter\u00a0\u00bb custom_margin=\u00a0\u00bb||\u00a0\u00bb column_structure=\u00a0\u00bb1_5,1_5,1_5,1_5,1_5″][et_pb_column type=\u00a0\u00bb1_5″ _builder_version=\u00a0\u00bb3.25″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/blog.topsolid.fr\/wp-content\/uploads\/2019\/03\/TSCam-1.png\u00a0\u00bb url=\u00a0\u00bbhttps:\/\/www.topsolid.fr\/produits\/topsolidcam.htm\u00a0\u00bb url_new_window=\u00a0\u00bbon\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb align_tablet=\u00a0\u00bbcenter\u00a0\u00bb align_last_edited=\u00a0\u00bbon|desktop\u00a0\u00bb _builder_version=\u00a0\u00bb3.23″ border_radii=\u00a0\u00bbon|15px|15px|15px|15px\u00a0\u00bb border_color_all=\u00a0\u00bb#d0001d\u00a0\u00bb border_style_all=\u00a0\u00bbinset\u00a0\u00bb box_shadow_style=\u00a0\u00bbpreset6″ box_shadow_horizontal=\u00a0\u00bb1px\u00a0\u00bb][\/et_pb_image][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_5″ _builder_version=\u00a0\u00bb3.25″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/blog.topsolid.fr\/wp-content\/uploads\/2019\/03\/TSDesign-1.png\u00a0\u00bb url=\u00a0\u00bbhttps:\/\/www.topsolid.fr\/produits\/topsoliddesign.htm\u00a0\u00bb url_new_window=\u00a0\u00bbon\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb align_tablet=\u00a0\u00bbcenter\u00a0\u00bb align_last_edited=\u00a0\u00bbon|desktop\u00a0\u00bb _builder_version=\u00a0\u00bb3.23″ border_radii=\u00a0\u00bbon|15px|15px|15px|15px\u00a0\u00bb border_color_all=\u00a0\u00bb#d0001d\u00a0\u00bb box_shadow_style=\u00a0\u00bbpreset6″ box_shadow_horizontal=\u00a0\u00bb1px\u00a0\u00bb][\/et_pb_image][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_5″ _builder_version=\u00a0\u00bb3.25″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/blog.topsolid.fr\/wp-content\/uploads\/2019\/03\/TSSheetmetal-1.png\u00a0\u00bb url=\u00a0\u00bbhttps:\/\/www.topsolid.fr\/produits\/topsolidsheetmetal.htm\u00a0\u00bb url_new_window=\u00a0\u00bbon\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb align_tablet=\u00a0\u00bbcenter\u00a0\u00bb align_last_edited=\u00a0\u00bbon|desktop\u00a0\u00bb _builder_version=\u00a0\u00bb3.23″ border_radii=\u00a0\u00bbon|15px|15px|15px|15px\u00a0\u00bb border_color_all=\u00a0\u00bb#d0001d\u00a0\u00bb box_shadow_style=\u00a0\u00bbpreset6″][\/et_pb_image][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_5″ _builder_version=\u00a0\u00bb3.25″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/blog.topsolid.fr\/wp-content\/uploads\/2019\/03\/TSWood-1.png\u00a0\u00bb url=\u00a0\u00bbhttps:\/\/www.topsolid.fr\/produits\/topsolidwood.htm\u00a0\u00bb url_new_window=\u00a0\u00bbon\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb align_tablet=\u00a0\u00bbcenter\u00a0\u00bb align_last_edited=\u00a0\u00bbon|desktop\u00a0\u00bb _builder_version=\u00a0\u00bb3.23″ border_radii=\u00a0\u00bbon|15px|15px|15px|15px\u00a0\u00bb border_color_all=\u00a0\u00bb#d0001d\u00a0\u00bb box_shadow_style=\u00a0\u00bbpreset6″ box_shadow_horizontal=\u00a0\u00bb1px\u00a0\u00bb][\/et_pb_image][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_5″ _builder_version=\u00a0\u00bb3.25″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/blog.topsolid.fr\/wp-content\/uploads\/2019\/03\/TSErp-1.png\u00a0\u00bb url=\u00a0\u00bbhttps:\/\/www.topsolid.fr\/produits\/topsoliderp.htm\u00a0\u00bb url_new_window=\u00a0\u00bbon\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb align_tablet=\u00a0\u00bbcenter\u00a0\u00bb align_last_edited=\u00a0\u00bbon|desktop\u00a0\u00bb _builder_version=\u00a0\u00bb3.23″ border_radii=\u00a0\u00bbon|15px|15px|15px|15px\u00a0\u00bb border_color_all=\u00a0\u00bb#d0001d\u00a0\u00bb box_shadow_style=\u00a0\u00bbpreset6″][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb3.25″ custom_padding=\u00a0\u00bb35px|0px|39px|0px|false|false\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb3.25″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb3.27.4″]<\/p>\n

    <\/h2>\n

    Les \u00e9tapes pour une programmation r\u00e9ussie<\/h2>\n

    Avant de passer \u00e0 l\u2019\u00e9tape de fabrication, il est capital de bien se pr\u00e9parer. Le fichier CAO de la pi\u00e8ce \u00e0 concevoir doit en premier lieu \u00eatre v\u00e9rifi\u00e9, et les tol\u00e9rances ajust\u00e9es. Il convient bien \u00e9videmment de choisir la machine et les outils adapt\u00e9s au r\u00e9sultat attendu et si possible de passer par une \u00e9tape de simulation.<\/p>\n

     <\/p>\n

    Analyse pr\u00e9liminaire<\/h3>\n

    Avant de lancer l\u2019\u00e9tape de fabrication, toute pi\u00e8ce doit \u00eatre contr\u00f4l\u00e9e. V\u00e9rifier dans un premier temps qu\u2019il s\u2019agit de la bonne pi\u00e8ce et de la bonne version du fichier.<\/p>\n

     <\/p>\n

    Gestion des tol\u00e9rances<\/h3>\n

    Pour qu\u2019un mod\u00e8le CAO complexe soit usinable, il demande souvent d\u2019\u00eatre modifi\u00e9. En effet, dans la plupart des situations les mod\u00e8les CAO sont dessin\u00e9s \u00e0 partir des c\u00f4tes nominales. Cependant, les op\u00e9rations de fabrication et d\u2019usinage imposent des tol\u00e9rances qui devront \u00eatre ajust\u00e9es sur ces fichiers CAO. Si vous utilisez un logiciel de CFAO, pensez donc \u00e0 sa capacit\u00e9 de modification des c\u00f4tes \u00e0 post\u00e9riori.<\/p>\n

     <\/p>\n

    Le choix des machines et des outils coupants<\/h3>\n

    Toutes les machines ne sont pas \u00e9quivalentes. Le choix de la machine ad\u00e9quate d\u00e9pend de nombreux param\u00e8tres\u00a0: forme de la pi\u00e8ce, dimension, mati\u00e8re\u2026 De m\u00eame, il existe une multitude d\u2019outils coupants d\u00e9di\u00e9s \u00e0 l\u2019usinage des pi\u00e8ces complexes. Leur forme d\u00e9pend des g\u00e9om\u00e9tries \u00e0 percer, tourner ou fraiser et la mati\u00e8re qui les constitue est choisie en fonction du mat\u00e9riau \u00e0 usiner ainsi que des param\u00e8tres cin\u00e9matiques. Le choix des machines et outils va donc fortement conditionner le succ\u00e8s de l\u2019usinage.<\/p>\n

     <\/p>\n

    Passer par une \u00e9tape de simulation avant de lancer la fabrication<\/h3>\n

    L\u2019usinage de pi\u00e8ces complexes est co\u00fbteux, il est donc pr\u00e9f\u00e9rable d\u2019\u00e9viter de rater les premi\u00e8res pi\u00e8ces et de s\u2019affranchir de nombreuses reprises d\u2019usinage. Une simulation des trajectoires en parall\u00e8le de la programmation permet ainsi \u00e0 l\u2019op\u00e9rateur de comparer le mod\u00e8le simul\u00e9 avec l\u2019usinage en cours, ce qui pr\u00e9vient le risque de collision et permet de r\u00e9agir en temps r\u00e9el.
    \n[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb3.25″ custom_padding=\u00a0\u00bb0|0px|25.4063px|0px|false|false\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb3.25″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text admin_label=\u00a0\u00bbTexte\u00a0\u00bb _builder_version=\u00a0\u00bb3.27.4″]<\/p>\n

    <\/h2>\n

    Les atouts de TopSolid<\/h2>\n

    L\u2019un des enjeux de la CFAO est la r\u00e9alisation de pi\u00e8ces complexes en utilisant le minimum d\u2019\u00e9tapes, l\u2019id\u00e9al \u00e9tant d\u2019\u00eatre capable d\u2019usiner une pi\u00e8ce d\u2019un seul tenant, sans d\u00e9montage. TopSolid\u2019Cam est ainsi capable de g\u00e9rer la programmation des tours\/fraiseurs, que ce soit en tournage combin\u00e9 avec des op\u00e9rations de fraisage 2D ou 3D ainsi que du 4 ou 5 axes continus.<\/p>\n

     <\/p>\n

    La gestion des derniers outils<\/h3>\n

    TopSolid\u2019Cam est capable de g\u00e9rer les nouvelles fraises tonneau. Ces fraises ont la particularit\u00e9 d\u2019\u00e9pouser au mieux les formes \u00e0 faible courbure, ce qui permet de r\u00e9duire significativement le nombre de passes du parcours en 5 axes.<\/p>\n

     <\/p>\n

    Usinage dynamique en tournage et fraisage<\/h3>\n

    TopSolid\u2019Cam int\u00e8gre une fonction d\u2019usinage haute performance, ce qui permet de garder un volume de mati\u00e8re enlev\u00e9 constant en cours d\u2019usinage et donc d\u2019user moins vite les outils de coupe.<\/p>\n

     
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    <\/h3>\n

    <\/h3>\n

    Facilit\u00e9 de modification \u00e0 post\u00e9riori<\/h3>\n

    Le logiciel TopSolid et en particulier la version d\u00e9di\u00e9e \u00e0 l\u2019usinage TopSolid\u2019Cam, est extr\u00eamement souple, car il propose de puissantes fonctions de modification des pi\u00e8ces \u00e0 post\u00e9riori. Cette possibilit\u00e9 est un atout pour la fabrication de pi\u00e8ces complexes, qui n\u00e9cessitent de nombreux ajustements.<\/p>\n

     <\/p>\n

    La d\u00e9tection automatique des formes<\/h3>\n

    TopSolid sait d\u00e9tecter automatiquement les formes de base telles que les rainures, gorges, trous et poches, sur les mod\u00e8les con\u00e7us avec TopSolid, mais aussi sur les mod\u00e8les import\u00e9s. Le logiciel est ainsi un alli\u00e9 pr\u00e9cieux qui permet d\u2019aiguiller l\u2019op\u00e9rateur vers les bonnes strat\u00e9gies d\u2019usinage, gr\u00e2ce \u00e0 une analyse topologique intelligente.<\/p>\n

     <\/p>\n

    Des algorithmes puissants<\/h3>\n

    La programmation de pi\u00e8ces complexes\u00a04 et 5 axes n\u00e9cessite une puissance de calcul \u00e9lev\u00e9e, des outils de simulation performants et des automatismes puissants. TopSolid\u2019Cam int\u00e8gre des fonctions automatiques appr\u00e9ciables\u00a0telles que la d\u00e9tection des collisions, ce qui permet de r\u00e9duire les d\u00e9fauts d\u2019usinage. Gr\u00e2ce \u00e0 l\u2019ensemble des algorithmes d\u2019usinage propos\u00e9s par TopSolid, il est possible de traiter par exemple toutes les parties d\u2019un moule.<\/p>\n

     
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    En CFAO, et particuli\u00e8rement en usinage, la fabrication de pi\u00e8ces de forme complexe n\u00e9cessite de respecter les sp\u00e9cifications fonctionnelles exprim\u00e9es par le designer ou le concepteur. Le mod\u00e8le g\u00e9om\u00e9trique construit en CAO constitue une maquette num\u00e9rique de r\u00e9f\u00e9rence qui devra \u00eatre reproduite le plus fid\u00e8lement possible lors de la phase de fabrication. <\/p>\n","protected":false},"author":4,"featured_media":715,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","content-type":"","_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[5,25,4,8],"tags":[21,23,22,26,24,29],"class_list":["post-696","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cao","category-cfao","category-metallerie","category-usinage","tag-cao","tag-cfao","tag-fao","tag-projet","tag-topsolid","tag-topsolidwood"],"yoast_head":"\nTout savoir sur la programmation des pi\u00e8ces complexes -<\/title>\n<meta name=\"description\" content=\"En CFAO, et particuli\u00e8rement en usinage, la fabrication de pi\u00e8ces de forme complexe n\u00e9cessite de respecter les sp\u00e9cifications fonctionnelles exprim\u00e9es par le designer ou le concepteur. 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