{"id":23599,"date":"2023-09-25T14:51:25","date_gmt":"2023-09-25T14:51:25","guid":{"rendered":"https:\/\/xometry.pro\/articles\/cnc-machining-fillets-chamfers\/"},"modified":"2023-12-19T16:14:54","modified_gmt":"2023-12-19T16:14:54","slug":"usinage-chanfreins-conges","status":"publish","type":"articles","link":"https:\/\/xometry.pro\/fr\/articles\/usinage-chanfreins-conges\/","title":{"rendered":"L\u2019impact des chanfreins et des cong\u00e9s sur le co\u00fbt de l\u2019usinage CNC"},"content":{"rendered":"<div role=\"navigation\" aria-label=\"Table des mati\u00e8res\" class=\"simpletoc wp-block-simpletoc-toc\"><h2 class=\"simpletoc-title\">Table des mati\u00e8res<\/h2>\n<ul class=\"simpletoc-list\">\n<li><a href=\"#h-pourquoi-les-chanfreins-et-les-conges-accroissent-les-couts-d-usinage\">Pourquoi les chanfreins et les cong\u00e9s accroissent les co\u00fbts d\u2019usinage<\/a>\n\n\n<\/li>\n\n<li><a href=\"#h-comment-reduire-les-couts-d-usinage-induits-par-les-conges-et-les-chanfreins\">Comment r\u00e9duire les co\u00fbts d\u2019usinage induits par les cong\u00e9s et les chanfreins<\/a>\n\n\n<\/li>\n\n<\/li>\n\n<li><a href=\"#h-utilisez-nos-ressources-en-lignes-pour-ameliorer-l-usinabilite-de-vos-pieces\">Utilisez nos ressources en lignes pour am\u00e9liorer l\u2019usinabilit\u00e9 de vos pi\u00e8ces<\/a>\n<\/li><\/ul><\/div>\n\n\n<p>Esth\u00e9tiquement agr\u00e9ables, les chanfreins et les cong\u00e9s conf\u00e8rent au mod\u00e8le une allure professionnelle et une certaine plus-value. Cependant, ils ont \u00e9galement tendance \u00e0 accro\u00eetre, de fa\u00e7on significative, les temps de r\u00e9alisation et les <a href=\"https:\/\/xometry.eu\/fr\/le-cout-de-lusinage-cnc\/\">co\u00fbts de projets d\u2019usinage CNC<\/a>.<\/p>\n\n\n\n<p>Pour cela, avant m\u00eame d\u2019envisager l\u2019ajout de ces \u00e9l\u00e9ments, il est crucial de se poser les questions suivantes :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Quelle est la fonction principale d\u2019un chanfrein ou d\u2019un cong\u00e9 ?<\/li>\n\n\n\n<li>Ce chanfrein ou ce cong\u00e9 est-il n\u00e9cessaire au bon fonctionnement de la pi\u00e8ce ?<\/li>\n\n\n\n<li>L\u2019ajout de cet \u00e9l\u00e9ment est-il rentable par rapport \u00e0 la quantit\u00e9 que je m\u2019appr\u00eate \u00e0 faire produire ?<\/li>\n\n\n\n<li>Comment faire pour valider les tol\u00e9rances ?<\/li>\n<\/ul>\n\n\n\n<p>Afin de faciliter la compr\u00e9hension quant \u00e0 l\u2019importance de ces interrogations vis-\u00e0-vis de la conception et du budget, consid\u00e9rons quelques exemples.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"h-pourquoi-les-chanfreins-et-les-conges-accroissent-les-couts-d-usinage\"><strong>Pourquoi les chanfreins et les cong\u00e9s accroissent les co\u00fbts d\u2019usinage<\/strong><\/h2>\n\n<h3 class=\"wp-block-heading\" id=\"h-la-mise-en-place-de-l-outillage-prend-du-temps-en-plus-d-etre-onereuse\"><strong>La mise en place de l\u2019outillage prend du temps, en plus d\u2019\u00eatre on\u00e9reuse<\/strong><\/h3>\n\n\n<p>En premier lieu, commen\u00e7ons par expliquer de quelle fa\u00e7on les chanfreins et les cong\u00e9s sont r\u00e9alis\u00e9s dans le cadre de l\u2019<a href=\"https:\/\/xometry.eu\/fr\/usinage-cnc\/\">usinage CNC<\/a>. Pour les chanfreins, ils sont effectu\u00e9s \u00e0 l\u2019aide d\u2019un outil sp\u00e9cifique, tels que les fraises, les chanfreineuses ou les forets \u00e9tag\u00e9s, lesquels sont fix\u00e9s suivant l\u2019angle d\u2019incidence appropri\u00e9.<\/p>\n\n\n\n<p>On emploiera une chanfreineuse pour r\u00e9aliser les chanfreins externes, tandis que les fraises et forets \u00e9tag\u00e9s seront utilis\u00e9s pour cr\u00e9er les chanfreins internes.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/countersinks-for-chamfers.jpg\" alt=\"Countersinks for CNC machines\" class=\"wp-image-2460\" style=\"max-width:758px;max-height:506px\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/countersinks-for-chamfers.jpg 1000w, https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/countersinks-for-chamfers-300x200.jpg 300w, https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/countersinks-for-chamfers-768x512.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/countersinks-for-chamfers.jpg\" data-fancybox=\"gallery-23599\" data-caption=\"\u00c0 angle droit, la d\u00e9coupe des chanfreins s\u2019effectue ais\u00e9ment en une seule passe gr\u00e2ce \u00e0 des fraises de ce genre\" aria-label=\"Open full image\"><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/countersinks-for-chamfers.jpg\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\"><svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n               <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"\/>\r\n             <\/svg><\/a><\/div><figcaption class=\"wp-element-caption\">\u00c0 angle droit, la d\u00e9coupe des chanfreins s\u2019effectue ais\u00e9ment en une seule passe gr\u00e2ce \u00e0 des fraises de ce genre<\/figcaption><\/figure>\n\n\n\n<p>Les cong\u00e9s, pour leur part, sont r\u00e9alis\u00e9s \u00e0 l\u2019aide d\u2019une fraise \u00e0 queue qui proc\u00e8dera \u00e0 la d\u00e9coupe du profil envisag\u00e9. Si le cong\u00e9 est situ\u00e9 le long d\u2019une ar\u00eate, alors il est probable qu\u2019une fraise \u00e0 rayonner concave sera employ\u00e9e.&nbsp;<\/p>\n\n\n\n<p>Cependant, la mise en place de ces outils, en plus d\u2019avoir un certain co\u00fbt, prend aussi du temps. L\u2019outil de d\u00e9coupe doit pr\u00e9cis\u00e9ment adapter le rayon choisi pour qu\u2019il se fonde de fa\u00e7on transparente avec les diff\u00e9rentes surfaces de la pi\u00e8ce, en \u00e9vitant notamment les effets \u00ab d\u2019escalier \u00bb.<\/p>\n\n\n\n<p>Afin de parvenir \u00e0 ce r\u00e9sultat, les cong\u00e9s situ\u00e9s le long des ar\u00eates (comme celui apparaissant en vert dans la <strong>Figure 1<\/strong>) sont g\u00e9n\u00e9ralement usin\u00e9s \u00e0 l\u2019aide d\u2019une fraise \u00e0 t\u00eate sph\u00e9rique. On obtiendra des cong\u00e9s de qualit\u00e9 sup\u00e9rieure en programmant l\u2019outil de d\u00e9coupe pour qu\u2019il suive l\u2019ar\u00eate au plus pr\u00e8s et avec un pas d\u2019incr\u00e9mentation r\u00e9duit au minimum.<\/p>\n\n\n\n<p>Naturellement, cela en fait un proc\u00e9d\u00e9 co\u00fbteux : la r\u00e9alisation hautement pr\u00e9cise de chanfreins et de cong\u00e9s de qualit\u00e9 augmentera consid\u00e9rablement le temps d\u2019usinage, dans un environnement dans lequel le temps est, pr\u00e9cis\u00e9ment, de l\u2019argent. <\/p>\n\n\n\n<p>D\u2019o\u00f9 le besoin de consid\u00e9rer avant tout si l\u2019ajout de chanfreins ou de cong\u00e9s est n\u00e9cessaire au bon fonctionnement de la pi\u00e8ce et si le surco\u00fbt \u00e0 encourir peut \u00eatre justifi\u00e9.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"398\" height=\"224\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image.png\" alt=\"3D model representing a part with fillets and chamfers\" class=\"wp-image-2461\" style=\"max-width:412px;max-height:232px\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image.png 398w, https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image-300x169.png 300w\" sizes=\"(max-width: 398px) 100vw, 398px\" \/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image.png\" data-fancybox=\"gallery-23599\" data-caption=\"Figure 1\" aria-label=\"Open full image\"><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\"><svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n               <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"\/>\r\n             <\/svg><\/a><\/div><figcaption class=\"wp-element-caption\">Figure 1<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"1000\" height=\"357\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/ball-nose-mills-for-fillets.jpg\" alt=\"Ball nose mills for CNC machines\" class=\"wp-image-2463\" style=\"max-width:744px;max-height:266px\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/ball-nose-mills-for-fillets.jpg 1000w, https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/ball-nose-mills-for-fillets-300x107.jpg 300w, https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/ball-nose-mills-for-fillets-768x274.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/ball-nose-mills-for-fillets.jpg\" data-fancybox=\"gallery-23599\" data-caption=\"Les fraises \u00e0 t\u00eate sph\u00e9rique sont employ\u00e9es pour la d\u00e9coupe progressive des cong\u00e9s, au prix d\u2019un temps d\u2019usinage nettement allong\u00e9\" aria-label=\"Open full image\"><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/ball-nose-mills-for-fillets.jpg\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\"><svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n               <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"\/>\r\n             <\/svg><\/a><\/div><figcaption class=\"wp-element-caption\">Les fraises \u00e0 t\u00eate sph\u00e9rique sont employ\u00e9es pour la d\u00e9coupe progressive des cong\u00e9s, au prix d\u2019un temps d\u2019usinage nettement allong\u00e9<\/figcaption><\/figure>\n\n\n<h3 class=\"wp-block-heading\" id=\"h-les-chanfreins-et-les-conges-ne-sont-pas-adaptes-aux-productions-a-faibles-volumes\"><strong>Les chanfreins et les cong\u00e9s ne sont pas adapt\u00e9s aux productions \u00e0 faibles volumes<\/strong><\/h3>\n\n\n<p>Le volume \u00e0 produire est un autre crit\u00e8re majeur quand on consid\u00e8re les co\u00fbts d\u2019un projet d\u2019usinage :&nbsp; les frais de production \u00e9tant inversement proportionnels au nombre de pi\u00e8ces produites, si les volumes sont trop faibles, les prix augmenteront en cons\u00e9quence (et vice-versa).<\/p>\n\n\n\n<p>Cela signifie qu\u2019ajouter des chanfreins et des cong\u00e9s sur des pi\u00e8ces produites en petite quantit\u00e9 ne fera qu\u2019accro\u00eetre les co\u00fbts de fabrication (voir la table ci-dessous de comparaison des co\u00fbts). Une production sur une \u00e9chelle plus large sera probablement r\u00e9alis\u00e9e gr\u00e2ce \u00e0 un proc\u00e9d\u00e9 de coul\u00e9e ou de moulage, proc\u00e9d\u00e9 dans le cadre duquel les cong\u00e9s seront non seulement rentables, mais aussi n\u00e9cessaires.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"h-comment-reduire-les-couts-d-usinage-induits-par-les-conges-et-les-chanfreins\"><strong>Comment r\u00e9duire les co\u00fbts d\u2019usinage induits par les cong\u00e9s et les chanfreins<\/strong><\/h2>\n\n\n<p>S\u2019il appara\u00eet que l\u2019ajout de chanfreins ou de cong\u00e9s est in\u00e9vitable, il convient alors de se demander comment faire en sorte que la pi\u00e8ce soit usin\u00e9e \u00e0 moindre co\u00fbt.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"h-concevoir-des-chanfreins-avec-les-bonnes-tolerances\"><strong>Concevoir des chanfreins avec les bonnes tol\u00e9rances<\/strong><\/h3>\n\n\n<p>Dans la <strong>Figure 2<\/strong> ci-dessous, le trou color\u00e9 en bleu est un trou taraud\u00e9 M18 X 2 assorti d\u2019un chanfrein de 0,635 mm, lequel est n\u00e9cessaire pour assurer un embo\u00eetement plus ais\u00e9 de la pi\u00e8ce correspondante dans le trou en question.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"374\" height=\"257\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image-1.png\" alt=\"3D model representing a part with fillets and chamfers\" class=\"wp-image-2464\" style=\"max-width:416px;max-height:286px\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image-1.png 374w, https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image-1-300x206.png 300w\" sizes=\"(max-width: 374px) 100vw, 374px\" \/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image-1.png\" data-fancybox=\"gallery-23599\" data-caption=\"Figure 2\" aria-label=\"Open full image\"><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image-1.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\"><svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n               <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"\/>\r\n             <\/svg><\/a><\/div><figcaption class=\"wp-element-caption\">Figure 2<\/figcaption><\/figure>\n\n\n\n<p>Quand il s\u2019agit de concevoir un chanfrein similaire \u00e0 celui-ci, les tol\u00e9rances ne sauraient \u00eatre ignor\u00e9es. Et plus elles seront strictes, plus la pi\u00e8ce co\u00fbtera cher.<\/p>\n\n\n\n<p>Le diam\u00e8tre du chanfrein visualis\u00e9 dans la <strong>Figure 2<\/strong> est donn\u00e9, par exemple, avec trois chiffres apr\u00e8s la virgule. Cela implique que les d\u00e9viations sur le diam\u00e8tre du chanfrein, par rapport \u00e0 sa valeur nominale, ne doivent pas exc\u00e9der \u00b1&nbsp;0,127&nbsp;mm.<\/p>\n\n\n\n<p>Renforcer les tol\u00e9rances ne ferait qu\u2019accro\u00eetre encore le prix, en raison des tests et v\u00e9rifications plus fr\u00e9quentes, sans parler de la jauge sp\u00e9cifique sur le chanfrein afin de pouvoir tenir une pr\u00e9cision \u00e0 trois d\u00e9cimales. Des exigences accrues en termes de surveillance et de pr\u00e9cision des mesures se traduisent naturellement par des pi\u00e8ces plus co\u00fbteuses.<\/p>\n\n\n\n<p>En revanche, si l\u2019on fait passer la pr\u00e9cision sur le diam\u00e8tre du chanfrein de trois d\u00e9cimales \u00e0 deux, la d\u00e9viation maximale autoris\u00e9e est doubl\u00e9e \u00e0 \u00b1&nbsp;0,254&nbsp;mm par rapport \u00e0 la valeur nominale. Non seulement cela diminuera la fr\u00e9quence des tests \u00e0 effectuer, mais on pourra en plus se contenter d\u2019utiliser un pied \u00e0 coulisse au lieu d\u2019une jauge \u00e0 chanfrein. On voit donc que des \u00e9conomies peuvent \u00eatre r\u00e9alis\u00e9es, \u00e0 condition de pouvoir s\u2019accommoder de ce genre d\u2019ajustement.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"h-supprimer-les-chanfreins-dans-la-mesure-du-possible\"><strong>Supprimer les chanfreins (dans la mesure du possible)<\/strong><\/h3>\n\n\n<p>La suppression des chanfreins sur le diam\u00e8tre du trou peut \u00e9galement \u00eatre envisag\u00e9e afin de rendre les choses plus simples, et surtout moins ch\u00e8res (voir la table ci-dessous).&nbsp;<\/p>\n\n\n\n<p>Par exemple, les chanfreins repr\u00e9sent\u00e9s sur les bords des trous en gris, dans la <strong>Figure 3<\/strong>, ont pour fonction de faciliter l\u2019insertion des broches dans chaque trou. N\u00e9anmoins, si la taille en elle-m\u00eame n\u2019est pas un param\u00e8tre critique, il est possible de retirer le chanfrein du mod\u00e8le 3D, en ajoutant une annotation pr\u00e9cisant qu\u2019il faudra supprimer toutes les ar\u00eates aigu\u00ebs. <\/p>\n\n\n\n<p>D\u2019un autre c\u00f4t\u00e9, il peut \u00eatre maintenu et assorti d\u2019une taille minimale et maximale, comme dans la <strong>Figure<\/strong> <strong>3<\/strong>, avec des tol\u00e9rances suffisamment rel\u00e2ch\u00e9es.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"372\" height=\"238\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image-2.png\" alt=\"3D model representing a part with fillets and chamfers\" class=\"wp-image-2465\" style=\"max-width:438px;max-height:280px\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image-2.png 372w, https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image-2-300x192.png 300w\" sizes=\"(max-width: 372px) 100vw, 372px\" \/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image-2.png\" data-fancybox=\"gallery-23599\" data-caption=\"Figure 3\" aria-label=\"Open full image\"><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image-2.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\"><svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n               <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"\/>\r\n             <\/svg><\/a><\/div><figcaption class=\"wp-element-caption\">Figure 3<\/figcaption><\/figure>\n\n\n<h3 class=\"wp-block-heading\" id=\"h-quand-c-est-possible-utiliser-des-chanfreins-plutot-que-des-conges\"><strong>Quand c\u2019est possible, utiliser des chanfreins plut\u00f4t que des cong\u00e9s<\/strong><\/h3>\n\n\n<p>S\u2019il est possible de remplacer les cong\u00e9s par des chanfreins, alors c\u2019est une solution id\u00e9ale pour rendre la pi\u00e8ce meilleur march\u00e9. Un chanfrein courant le long du rebord de la pi\u00e8ce (comme celui visualis\u00e9 en rouge) sera beaucoup plus simple \u00e0 r\u00e9aliser, et beaucoup moins co\u00fbteux, que des cong\u00e9s.<\/p>\n\n\n\n<p>En effet, l\u2019outillage servant \u00e0 la r\u00e9alisation des cong\u00e9s souffre d\u2019un temps de mise en place plus important (principalement parce qu\u2019il est n\u00e9cessaire de s\u2019assurer que la d\u00e9coupe joindra harmonieusement les surfaces li\u00e9es par le cong\u00e9). De plus, la fraise doit souvent effectuer plusieurs passes le long du cong\u00e9 pour garantir un niveau de pr\u00e9cision acceptable.<\/p>\n\n\n\n<p>Pour leur part, les outils servant au chanfreinage sont plus rapides \u00e0 mettre en place et op\u00e8rent sur des dur\u00e9es plus courtes, d\u2019o\u00f9 les \u00e9conomies par rapport \u00e0 la r\u00e9alisation des cong\u00e9s.<\/p>\n\n\n\n<p>Dans le cas o\u00f9 il ne serait pas possible de remplacer un cong\u00e9 par un chanfrein, il faudra s\u2019efforcer d\u2019avoir recours \u00e0 une taille standard, en particulier si l\u2019on utilise une fraise \u00e0 rayon dont les tailles standards d\u00e9marrent \u00e0 1,6&nbsp;mm et augmentent par pas de 0,8&nbsp;mm. Usiner des cong\u00e9s avec ce genre d\u2019outil prendra moins de temps qu\u2019avec une fraise \u00e0 t\u00eate sph\u00e9rique.<\/p>\n\n\n\n<p>Le tableau ci-dessous pr\u00e9sente les variations de prix par rapport aux \u00e9l\u00e9ments r\u00e9alis\u00e9s en <a href=\"https:\/\/xometry.eu\/fr\/usinage-cnc\/\">usinage CNC<\/a>, avec les co\u00fbts pour 1, 10 et 100 pi\u00e8ces produites.<\/p>\n\n\n<div class=\"custom-table-block \" id=\"table-id-729\" >\r\n\t<div class=\"search-input-wrapper\">\r\n\t\t<svg width=\"16\" height=\"16\" viewBox=\"0 0 16 16\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\r\n\t\t\t<path d=\"M15.7812 13.833L12.6659 10.7177C12.5252 10.5771 12.3346 10.499 12.1347 10.499H11.6253C12.4877 9.39596 13.0002 8.00859 13.0002 6.49937C13.0002 2.90909 10.0911 0 6.50083 0C2.91056 0 0.00146484 2.90909 0.00146484 6.49937C0.00146484 10.0896 2.91056 12.9987 6.50083 12.9987C8.01006 12.9987 9.39742 12.4863 10.5004 11.6239V12.1332C10.5004 12.3332 10.5786 12.5238 10.7192 12.6644L13.8345 15.7797C14.1282 16.0734 14.6032 16.0734 14.8938 15.7797L15.778 14.8954C16.0718 14.6017 16.0718 14.1267 15.7812 13.833ZM6.50083 10.499C4.29167 10.499 2.50122 8.71165 2.50122 6.49937C2.50122 4.29021 4.28855 2.49976 6.50083 2.49976C8.70999 2.49976 10.5004 4.28708 10.5004 6.49937C10.5004 8.70852 8.71311 10.499 6.50083 10.499Z\" fill=\"#476175\"\/>\r\n\t\t<\/svg>\r\n\t\t<input type=\"search\" class=\"table-search-input\" id=\"table-search-729\" placeholder=\"Rechercher...\">\r\n\t<\/div>\t\r\n\t<div class=\"table-wrapper\">\r\n\t\t<table style=\"border-collapse: collapse; width: 100%; height: 315px;\">\n<tbody>\n<tr style=\"height: 48px;\">\n<td class=\"block-editor-rich-text__editable wp-block-table__cell-content rich-text\" style=\"width: 39.0464%; height: 48px;\" role=\"textbox\" contenteditable=\"true\" aria-multiline=\"true\" aria-label=\"Body cell text\"><strong data-rich-text-format-boundary=\"true\">Mod\u00e8le 3D<\/strong><\/td>\n<td class=\"block-editor-rich-text__editable wp-block-table__cell-content rich-text\" style=\"width: 20.3608%; height: 48px;\" role=\"textbox\" contenteditable=\"true\" aria-multiline=\"true\" aria-label=\"Body cell text\"><strong>Co\u00fbt pour 1 pi\u00e8ce<\/strong><\/td>\n<td class=\"block-editor-rich-text__editable wp-block-table__cell-content rich-text\" style=\"width: 20.3608%; height: 48px;\" role=\"textbox\" contenteditable=\"true\" aria-multiline=\"true\" aria-label=\"Body cell text\"><strong>Co\u00fbt pour 10 pi\u00e8ces<\/strong><\/td>\n<td class=\"block-editor-rich-text__editable wp-block-table__cell-content rich-text\" style=\"width: 20.1031%; height: 48px;\" role=\"textbox\" contenteditable=\"true\" aria-multiline=\"true\" aria-label=\"Body cell text\"><strong data-rich-text-format-boundary=\"true\">Co\u00fbt pour 100 pi\u00e8ces<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 195px;\">\n<td style=\"width: 39.0464%; height: 195px;\">\n<p><div id=\"attachment_2461\" style=\"width: 310px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-2461\" class=\"size-medium wp-image-2461\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image-300x169.png\" alt=\"3D model representing a part with fillets and chamfers\" width=\"300\" height=\"169\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image-300x169.png 300w, https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/image.png 398w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-2461\" class=\"wp-caption-text\">Pi\u00e8ce comportant \u00e0 la fois des chanfreins et des cong\u00e9s<\/p><\/div><\/td>\n<td style=\"width: 20.3608%; height: 195px;\">\u20ac449.81<\/td>\n<td style=\"width: 20.3608%; height: 195px;\">\u20ac146.93<\/td>\n<td style=\"width: 20.1031%; height: 195px;\">\u20ac58.96<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 39.0464%; height: 24px;\">\n<p><div id=\"attachment_2468\" style=\"width: 310px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-2468\" class=\"size-medium wp-image-2468\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/model-with-fillets-300x198.png\" alt=\"Model with fillets\" width=\"300\" height=\"198\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/model-with-fillets-300x198.png 300w, https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/model-with-fillets.png 650w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-2468\" class=\"wp-caption-text\">Pi\u00e8ce comportant uniquement des cong\u00e9s<\/p><\/div><\/td>\n<td style=\"width: 20.3608%; height: 24px;\">\u20ac436.60 (-3%)*<\/td>\n<td style=\"width: 20.3608%; height: 24px;\">\u20ac143.84 (-2%)*<\/td>\n<td style=\"width: 20.1031%; height: 24px;\">\u20ac57.92 (-2%)*<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 39.0464%; height: 24px;\">\n<p><div id=\"attachment_2467\" style=\"width: 310px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-2467\" class=\"size-medium wp-image-2467\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/model-with-chamfers-300x197.png\" alt=\"Model with chamfers\" width=\"300\" height=\"197\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/model-with-chamfers-300x197.png 300w, https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/model-with-chamfers.png 652w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-2467\" class=\"wp-caption-text\">Pi\u00e8ce comportant uniquement des chanfreins<\/p><\/div><\/td>\n<td style=\"width: 20.3608%; height: 24px;\">\u20ac436.15 (-3%)*<\/td>\n<td style=\"width: 20.3608%; height: 24px;\">\u20ac143.72 (-2%)*<\/td>\n<td style=\"width: 20.1031%; height: 24px;\">\u20ac56.98 (-3%)*<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 39.0464%; height: 24px;\">\n<p><div id=\"attachment_2469\" style=\"width: 310px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-2469\" class=\"size-medium wp-image-2469\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/model-without-features-300x201.png\" alt=\"Model without features\" width=\"300\" height=\"201\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/model-without-features-300x201.png 300w, https:\/\/xometry.pro\/wp-content\/uploads\/2023\/09\/model-without-features.png 654w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-2469\" class=\"wp-caption-text\">Pi\u00e8ce ne comportant ni chanfreins, ni cong\u00e9s<\/p><\/div><\/td>\n<td style=\"width: 20.3608%; height: 24px;\">\u20ac400.13 (-11%)*<\/td>\n<td style=\"width: 20.3608%; height: 24px;\">\u20ac133.99 (-9%)*<\/td>\n<td style=\"width: 20.1031%; height: 24px;\">\u20ac54.86 (-7%)*<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t<\/div>\r\n<\/div>\r\n<style>\r\n\t.custom-table-block table{\r\n\t\theight: initial!important;\r\n\t}\r\n\t.search-input-wrapper{\r\n\t\tposition: relative;\r\n\t\tmargin-bottom: 24px;\r\n\t}\r\n\t.search-input-wrapper svg{\r\n\t\tposition: absolute;\r\n\t\ttop:50%;\r\n\t\tleft:12px;\r\n\t\ttransform: translateY(-50%);\r\n\t}\r\n\t.table-search-input{\r\n\t\tpadding: 0 0 0 40px;\r\n\t\tborder:1px solid #C1CAD1;\r\n\t\theight: 44px;\r\n\t\twidth: 201px;\r\n\t\tcolor:#092C47;\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 400;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t}\r\n\t.table-search-input::placeholder{\r\n\t\tcolor:#092C47;\r\n\t}\r\n\t\r\n\t.custom-table-block thead th{\r\n\t\ttext-align: left;\r\n\t\twhite-space:nowrap;\r\n\t}\r\n\t\r\n\t.custom-table-block thead{\r\n\t\tmargin-bottom: 14px;\r\n\t}\r\n\r\n\t.custom-table-block tbody tr:nth-child(odd){\r\n\t\tbackground-color: #F6F9FF;\r\n\t}\r\n\r\n\t.custom-table-block tbody, .custom-table-block thead, .custom-table-block tr, .custom-table-block td, .custom-table-block th{\r\n\t\theight: initial!important;\r\n\t}\r\n\t\r\n\t.custom-table-block tbody td{\r\n\t\tcolor:#092C47;\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 400;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t\tpadding: 7px;\r\n\t}\r\n\t\r\n\t.custom-table-block thead th{\r\n\t\tfont-family: Open Sans;\r\n\t\tfont-size: 16px;\r\n\t\tfont-weight: 700;\r\n\t\tline-height: 24px;\r\n\t\tletter-spacing: 0em;\r\n\t\ttext-align: left;\r\n\t\tcolor:#092C47;\r\n\t\tposition: relative;\r\n\t}\r\n\t.custom-table-block thead th:after{\r\n\t\tcontent:\"\";\r\n\t\tdisplay: inline-block;\r\n\t\tbackground-image: url(\"data:image\/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http:\/\/www.w3.org\/2000\/svg'%3E%3Cpath d='M10.585 0.585938L6 5.17094L1.415 0.585938L0 2.00094L6 8.00094L12 2.00094L10.585 0.585938Z' fill='%23476175'\/%3E%3C\/svg%3E%0A\");\r\n\t\tmargin-left: 8px;\r\n\t\tbackground-position: center center;\r\n\t\tbackground-size: 12px 7.5px;\r\n\t\tbackground-repeat: no-repeat;\r\n\t\twidth: 24px;\r\n\t\theight: 12px;\r\n\t}\r\n\t.custom-table-block{\r\n\t\tmargin: 20px 0;\t\r\n\t}\r\n\t.custom-table-block .table-wrapper{\r\n\t\twidth: 100%;\r\n\t\toverflow-x: auto;\r\n\t}\r\n\t@media(max-width: 768px){\r\n\t\t\/* .custom-table-block tbody td{\r\n\t\t\twhite-space: nowrap;\r\n\t\t} *\/\r\n\t\t.custom-table-block .table-wrapper{\r\n\t\t\tmax-width: calc(100vw - 16px);\r\n\t\t}\r\n\t}\r\n<\/style>\r\n\n\n\n<p>*Variation du prix compar\u00e9 \u00e0 une pi\u00e8ce comportant \u00e0 la fois des chanfreins et des cong\u00e9s<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"h-utilisez-nos-ressources-en-lignes-pour-ameliorer-l-usinabilite-de-vos-pieces\"><strong>Utilisez nos ressources en lignes pour am\u00e9liorer l\u2019usinabilit\u00e9 de vos pi\u00e8ces<\/strong><\/h2>\n\n\n<p>Il faut beaucoup de pratique et d\u2019exp\u00e9rience pour comprendre et estimer l\u2019impact que les d\u00e9cisions prises au niveau de la conception (comme l\u2019ajout de chanfreins et de cong\u00e9s) peuvent avoir sur les temps et les co\u00fbts d\u2019usinage.&nbsp;<\/p>\n\n\n\n<p>Mais gr\u00e2ce \u00e0 l\u2019ensemble de nos astuces de conception pour l\u2019usinage CNC disponibles en ligne, vous pouvez profiter de nos retours d\u2019exp\u00e9rience et am\u00e9liorer ainsi vos comp\u00e9tences en conception.<\/p>\n","protected":false},"author":50,"featured_media":9717,"comment_status":"open","ping_status":"closed","template":"","categories":[],"c-tag-articles":[],"global-tag":[1698],"class_list":["post-23599","articles","type-articles","status-publish","has-post-thumbnail","hentry","global-tag-usinage-cnc"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.7 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Impact des chanfreins et cong\u00e9s sur co\u00fbt de l&#039;usinage | Xometry Pro<\/title>\n<meta name=\"description\" content=\"Chanfreins et cong\u00e9s sont souvent ajout\u00e9s sur les mod\u00e8les m\u00e9caniques \u00e0 des fins esth\u00e9tiques. 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