{"id":3003,"date":"2025-03-11T15:54:14","date_gmt":"2025-03-11T07:54:14","guid":{"rendered":"https:\/\/chiggofactory.com\/?p=3003"},"modified":"2025-03-11T15:54:19","modified_gmt":"2025-03-11T07:54:19","slug":"3d-printing-vs-cnc-machining","status":"publish","type":"post","link":"https:\/\/chiggofactory.com\/fr\/3d-printing-vs-cnc-machining\/","title":{"rendered":"Impression 3D vs Usinage CNC: Quelle est la meilleure fa\u00e7on de faire votre pi\u00e8ce?"},"content":{"rendered":"<!-- wp:paragraph -->\n<p>L'impression 3D et l'usinage CNC sont deux des plus populaires <a href=\"https:\/\/chiggofactory.com\/Understanding-the-diverse-manufacturing-prosses\/\"> Processus de fabrication <\/a> aujourd'hui. Les deux m\u00e9thodes reposent sur des syst\u00e8mes de contr\u00f4le num\u00e9rique pour permettre la production rapide de prototypes et conviennent pour cr\u00e9er des pi\u00e8ces d'utilisation finale pr\u00e9cises et personnalis\u00e9es.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Cependant, ils diff\u00e8rent dans presque tous les sens - ils sont m\u00eame des concurrents directs lorsqu'il s'agit de produire des pi\u00e8ces solides. La plus grande diff\u00e9rence est qu'une m\u00e9thode construit la couche de pi\u00e8ces par couche, tandis que l'autre fonctionne en supprimant le mat\u00e9riau. Si vous vous trouvez \u00e0 un carrefour en choisissant entre l'usinage CNC et l'impression 3D pour vos produits, lisez la suite pour en savoir plus.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:image {\"id\":3009,\"sizeSlug\":\"large\",\"linkDestination\":\"none\"} -->\n<figure class=\"wp-block-image size-large\"><img src=\"https:\/\/chiggofactory.com\/wp-content\/uploads\/2025\/03\/3D-Printing-vs.-CNC-Machining-illustration-1024x576.jpg\" alt=\"3D Printing vs. CNC Machining illustration\" class=\"wp-image-3009\"><\/figure>\n<!-- \/wp:image -->\n\n<!-- wp:heading -->\n<h2 class=\"wp-block-heading\">Qu'est-ce que l'impression 3D?<\/h2>\n<!-- \/wp:heading -->\n\n<!-- wp:image {\"id\":3010,\"sizeSlug\":\"large\",\"linkDestination\":\"none\"} -->\n<figure class=\"wp-block-image size-large\"><img src=\"https:\/\/chiggofactory.com\/wp-content\/uploads\/2025\/03\/3d-printing-process-1024x649.webp\" alt=\"3d-printing process\" class=\"wp-image-3010\"><\/figure>\n<!-- \/wp:image -->\n\n<!-- wp:paragraph -->\n<p>L'impression 3D, \u00e9galement connue sous le nom de fabrication additive, est un processus qui cr\u00e9e des objets tridimensionnels \u00e0 partir d'un mod\u00e8le num\u00e9rique en ajoutant une couche de mat\u00e9riau par couche. Le processus commence par un mod\u00e8le num\u00e9rique, qui peut \u00eatre cr\u00e9\u00e9 \u00e0 l'aide d'un logiciel CAD (conception assist\u00e9e par ordinateur), obtenu \u00e0 partir d'un scanner 3D, ou t\u00e9l\u00e9charg\u00e9 \u00e0 partir de r\u00e9f\u00e9rentiels en ligne. Ensuite, le mod\u00e8le est import\u00e9 dans le logiciel de tranchage, qui le divise en de nombreuses couches transversales bidimensionnelles qui servent de plan pour l'imprimante. Le logiciel de tranchage convertit ensuite ces couches en une s\u00e9rie d'instructions - souvent dans le code G - que l'imprimante 3D peut comprendre. De plus, si le mod\u00e8le contient des pi\u00e8ces en surplomb, le logiciel peut g\u00e9n\u00e9rer des structures de support pour assurer une impression appropri\u00e9e. Enfin, l'imprimante suit ces instructions, d\u00e9posant la couche de mat\u00e9riau par calque et liant chaque nouvelle couche \u00e0 celle en dessous, construisant progressivement l'objet complet.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Les syst\u00e8mes d'impression 3D ont commenc\u00e9 \u00e0 entrer sur le march\u00e9 \u00e0 la fin des ann\u00e9es 1980 lorsque Chuck Hull a invent\u00e9 la st\u00e9r\u00e9olithographie (SLA), la premi\u00e8re technologie d'impression 3D. Avec des recherches en cours sur de nouveaux mat\u00e9riaux et des progr\u00e8s technologiques, davantage de techniques d'impression 3D ont \u00e9merg\u00e9. Les types communs aujourd'hui incluent:<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:list -->\n<ul class=\"wp-block-list\"><!-- wp:list-item -->\n<li><strong>FDM (mod\u00e9lisation des d\u00e9p\u00f4ts fusionn\u00e9s):<\/strong>Works by heating a thermoplastic filament, extruding it through a nozzle, and depositing it layer by layer. FDM is affordable, easy to use, and accessible for users of all skill levels. It supports large prints with the right machine setup and is suitable for architectural models, industrial design, and large-scale prototypes. However, it does not handle overhangs and fine details well and often requires support structures. FDM parts may have visible layer lines and weaker adhesion along the Z-axis, making them prone to delamination under stress.<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li><strong>SLA (st\u00e9r\u00e9olithographie):<\/strong> Uses ultraviolet light to cure successive layers of liquid photopolymer resin. SLA prints have fewer visible layer lines compared to FDM and can produce ultra-smooth surfaces with fine details, making them popular for jewelry, dental models, and intricate prototypes.<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li><strong>DLP (traitement de la lumi\u00e8re num\u00e9rique):<\/strong>Another resin-based 3D printing method, but instead of a laser, it uses a digital projector to cure an entire layer of resin at once. This makes DLP faster than SLA. DLP parts have sharp edges and crisp details and can be used in similar applications as SLA. However, they may sometimes show visible pixelation and typically have a smaller build area.<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li><strong>SLS (frittage laser s\u00e9lectif):<\/strong>Uses a high-powered laser to sinter powdered materials, such as nylon and TPU, layer by layer. The unsintered powder acts as support, enabling interlocking, overhanging and other complex designs that are difficult to produce with other methods. SLS parts have good mechanical strength but tend to have a slightly grainy texture.<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li><strong>DMLS (frittage laser en m\u00e9tal direct):<\/strong> An extension of SLS, specifically designed for processing metal powders. It partially melts powder particles to fuse them together at a molecular level, resulting in slightly porous parts that may require post-processing, such as hot isostatic pressing, to achieve full density. Unlike SLS, DMLS needs support structures\u2014which must be manually removed after printing\u2014to counteract thermal stress and warping during the process.<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li><strong>SLM (fusion au laser s\u00e9lectif):<\/strong>Also uses a high-power laser to produce metal parts, but unlike SLS, SLM fully melts the metal powder, creating 100% dense parts with superior mechanical strength, hardness, and durability, even comparable to cast or forged metal components. It works best with pure metals and select alloys. SLM generates higher thermal stress which can lead to warping and cracking. Stronger support structures are required to reduce these stresses.<\/li>\n<!-- \/wp:list-item --><\/ul>\n<!-- \/wp:list -->\n\n<!-- wp:heading -->\n<h2 class=\"wp-block-heading\">Qu'est-ce que l'usinage CNC?<\/h2>\n<!-- \/wp:heading -->\n\n<!-- wp:image {\"id\":3011,\"sizeSlug\":\"full\",\"linkDestination\":\"none\"} -->\n<figure class=\"wp-block-image size-full\"><img src=\"https:\/\/chiggofactory.com\/wp-content\/uploads\/2025\/03\/CNC-Machining-Process.jpg\" alt=\"CNC Machining Process\" class=\"wp-image-3011\"><\/figure>\n<!-- \/wp:image -->\n\n<!-- wp:paragraph -->\n<p>Alors que l'impression 3D est un processus de fabrication additif de pointe, l'usinage CNC (l'usinage de contr\u00f4le num\u00e9rique de l'ordinateur) repr\u00e9sente une technique de fabrication plus traditionnelle et soustractive. \u00c9mergeant dans les ann\u00e9es 1950 des premiers syst\u00e8mes NC (contr\u00f4le num\u00e9rique), l'usinage CNC a depuis \u00e9volu\u00e9 avec l'automatisation num\u00e9rique, permettant une fabrication de haute pr\u00e9cision dans toutes les industries.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Pour obtenir une pi\u00e8ce CNC, vous commencez par cr\u00e9er un mod\u00e8le num\u00e9rique \u00e0 l'aide d'un logiciel CAO. Ce mod\u00e8le est ensuite converti en code G lisible par machine via la programmation CAM, qui sp\u00e9cifie les mouvements, les vitesses et les op\u00e9rations pr\u00e9cis. Apr\u00e8s cela, la pi\u00e8ce est mont\u00e9e en toute s\u00e9curit\u00e9 sur la machine CNC, et les outils de coupe appropri\u00e9s sont s\u00e9lectionn\u00e9s et install\u00e9s. La machine CNC suit le code G: en commen\u00e7ant par l'usinage rugueux pour \u00e9liminer l'exc\u00e8s de mat\u00e9riau, puis en passant \u00e0 l'usinage fin pour obtenir les dimensions finales et la finition de surface.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Il existe plusieurs types communs d'usinage CNC largement utilis\u00e9 dans l'industrie manufacturi\u00e8re:<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:list -->\n<ul class=\"wp-block-list\"><!-- wp:list-item -->\n<li><strong><a href=\"https:\/\/chiggofactory.com\/a-complete-guide-to-cnc-milling\/\">Moulin CNC<\/a>: <\/strong>A versatile machining process that uses rotating multi-point cutting tools to remove material from a workpiece. It can create flat surfaces, holes, angled cuts, and cavities with high precision. This process is widely used to manufacture engine components, molds, and structural parts in industries such as aerospace, automotive, and electronics.<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li><strong><a href=\"https:\/\/chiggofactory.com\/what-is-cnc-turning\/\">CNC tournant<\/a>: <\/strong>Uses a single-point cutting tool to remove material from a rotational workpiece for creating cylindrical or conical shapes. It is highly effective in producing symmetrical parts like shafts, bolts, and bushings. This method is commonly applied in the production of automotive components, hydraulic fittings, and precision mechanical parts.<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li><strong><a href=\"https:\/\/chiggofactory.com\/what-is-wire-edm\/\">WEDM (fil d'\u00e9coulement \u00e9lectrique)<\/a>: <\/strong>A non-contact process that uses a thin, electrically charged wire to cut through conductive materials with extreme precision. It can shape hard materials, intricate geometries and fine details with minimal mechanical stress. WEDM is widely used in tool making, aerospace components, and medical device manufacturing.<\/li>\n<!-- \/wp:list-item --><\/ul>\n<!-- \/wp:list -->\n\n<!-- wp:heading -->\n<h2 class=\"wp-block-heading\">Quand choisir l'impression 3D par rapport \u00e0 l'usinage CNC<\/h2>\n<!-- \/wp:heading -->\n\n<!-- wp:paragraph -->\n<p>Les deux technologies offrent des avantages uniques - l'usinage CNC offre une grande pr\u00e9cision et une polyvalence mat\u00e9rielle, tandis que l'impression 3D est pr\u00e9f\u00e9r\u00e9e pour cr\u00e9er des g\u00e9om\u00e9tries complexes et un prototypage rapide. Le choix entre eux d\u00e9pend de divers facteurs, notamment des exigences mat\u00e9rielles, de la complexit\u00e9 de conception, de la vitesse de production et de la consid\u00e9ration budg\u00e9taire.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:heading {\"level\":3} -->\n<h3 class=\"wp-block-heading\">Tableau de r\u00e9f\u00e9rence rapide<\/h3>\n<!-- \/wp:heading -->\n\n<!-- wp:paragraph -->\n<p>Le tableau de contr\u00f4le rapide ci-dessous fournit une br\u00e8ve comparaison pour vous aider \u00e0 d\u00e9terminer le processus qui convient le mieux \u00e0 vos besoins, ou si une combinaison des deux pourrait produire des r\u00e9sultats optimaux.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Facteurs<\/strong><strong><\/strong><\/td><td><strong>Impression 3D<\/strong><strong><\/strong><\/td><td><strong>Usinage CNC<\/strong><strong><\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>S\u00e9lection des mat\u00e9riaux<\/strong><strong><\/strong><\/td><td><strong>\u25aa&nbsp;<\/strong>Limited but expending options<br><strong>\u25aa&nbsp;<\/strong>Flexible materials and superalloy<\/td><td><strong>\u25aa<\/strong><strong>&nbsp;<\/strong>Wide range , including metals, plastics, wood, and composites<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Complexit\u00e9 de conception<\/strong><strong><\/strong><\/td><td><strong>\u25aa<\/strong><strong>&nbsp;<\/strong>Can achieve highly complex geometries, including lattice structures and organic shapes<\/td><td><strong>\u25aa&nbsp;<\/strong>Can produce parts with relatively complex features, such as threaded holes, sharp edges, and curves<br><strong>\u25aa&nbsp;<\/strong>Limited by tool accessibility, tool path and type, axis-defined minimum radii, and the need for repositioning during the process<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Pr\u00e9cision<\/strong><strong><\/strong><\/td><td><strong>\u25aa<\/strong><strong>&nbsp;<\/strong>Moderate precision, typically \u00b10.1 mm, though high-end printers can achieve tighter tolerances<\/td><td><strong>\u25aa&nbsp;<\/strong>High precision, often \u00b10.005 mm or better, depending on material and machine<br><strong>\u25aa&nbsp;<\/strong>Excellent repeatability<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Finition de surface<\/strong><strong><\/strong><\/td><td><strong>\u25aa&nbsp;<\/strong>Requires post-processing (e.g. sanding, painting) for a smooth finish<br><strong>\u25aa&nbsp;<\/strong>Some 3D printing processes produce surfaces that are grained, rough, and stepped, or features that may appear blurred<\/td><td><strong>\u25aa<\/strong><strong>&nbsp;<\/strong>Smooth finish with little to no post-processing (typical 125 Ra finish as&nbsp;machined)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Grande partie de partie<\/strong><strong><\/strong><\/td><td><strong>\u25aa&nbsp;<\/strong>Up to 914 x 610 x 914 mm (e.g. FDM)<br><strong>\u25aa&nbsp;<\/strong>Ideal for smaller prototypes or assemblies<\/td><td><strong>\u25aa&nbsp;<\/strong>Up to 2000 x 800 x1000 mm<br><strong>\u25aa&nbsp;<\/strong>Suitable for industrial housings and&nbsp;large-scale prototypes<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Force<\/strong><strong><\/strong><\/td><td><strong>\u25aa&nbsp;<\/strong>In FDM, layer adhesion and print orientation reduce the strength of parts<br><strong>\u25aa&nbsp;<\/strong>Metal 3D printed parts in SLM and DMLS offer strength comparable to or even better than traditionally machined parts, especially when heat-treated or made with specific alloys<\/td><td><strong>\u25aa&nbsp;<\/strong>The internal structure of parts is continuous, and their strength usually remains at 100% of the native material<br><strong>\u25aa&nbsp;<\/strong>Some high-strength alloys may be impossible or difficult to process with extreme precision<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Installation<\/strong><strong><\/strong><\/td><td><strong>\u25aa<\/strong><strong>&nbsp;<\/strong>Minimal setup,&nbsp;require only a digital file and slicer software<\/td><td><strong>\u25aa&nbsp;<\/strong>Need workpiece fixation, tool selection, and machine calibration<br><strong>\u25aa&nbsp;<\/strong>G-code programming\uff0ctoolpath generation, and potential part repositioning<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Vitesse de construction<\/strong><strong><\/strong><\/td><td><strong>\u25aa&nbsp;<\/strong>Low setup time, but build time can take hours<br><strong>\u25aa&nbsp;<\/strong>Quicker for small batches and complex designs<br><strong>\u25aa&nbsp;<\/strong>Ideal for design validation, rapid prototyping, and test fits<\/td><td><strong>\u25aa&nbsp;<\/strong>Can take ages to set up and program, but cutting can be very fast<br><strong>\u25aa&nbsp;<\/strong>Fast for bulk production<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>&nbsp;Co\u00fbt<\/strong><strong><\/strong><\/td><td><strong>\u25aa&nbsp;<\/strong>Cost-effective for small series or custom one-offs<br><strong>\u25aa&nbsp;<\/strong>Slight variations in your product\u2019s size can significantly increase your 3D printing manufacturing costs<\/td><td><strong>\u25aa&nbsp;<\/strong>More economical for high-volume production<br><strong>\u25aa&nbsp;<\/strong>More material waste<\/td><\/tr><\/tbody><\/table><\/figure>\n<!-- \/wp:table -->\n\n<!-- wp:paragraph -->\n<p><\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Ensuite, nous pouvons d\u00e9terminer si vous devez choisir l'usinage CNC, l'impression 3D ou les deux pour votre projet en posant la s\u00e9rie de questions suivantes.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:heading {\"level\":3} -->\n<h3 class=\"wp-block-heading\">Impression 3D vs Usinage CNC: quel mat\u00e9riau pr\u00e9voyez-vous d'utiliser?<\/h3>\n<!-- \/wp:heading -->\n\n<!-- wp:paragraph -->\n<p>L'impression 3D et l'usinage CNC fonctionnent tous deux avec des m\u00e9taux et des plastiques. L'usinage CNC a une adaptabilit\u00e9 des mat\u00e9riaux plus large. Il est principalement utilis\u00e9 pour produire des pi\u00e8ces en m\u00e9tal, bien que le plastique soit devenu de plus en plus populaire. Vous pouvez \u00e9galement utiliser le processus CNC pour fabriquer des pi\u00e8ces \u00e0 partir de bois, de composites, m\u00eame de mousses et de cire.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p><strong> Les mat\u00e9riaux CNC les plus courants: <\/strong><\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:list -->\n<ul class=\"wp-block-list\"><!-- wp:list-item -->\n<li><strong>M\u00e9taux:&nbsp;<\/strong><a href=\"https:\/\/chiggofactory.com\/a-comprehensive-guide-to-aluminum-cnc-machining\/\">Aluminium<\/a>,&nbsp;<a href=\"https:\/\/chiggofactory.com\/a-comprehensive-guide-to-stainless-steel-cnc-machining\/\">Acier inoxydable<\/a>,&nbsp;Titanium,&nbsp;Brass<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li><strong>Plastiques:<\/strong>&nbsp;<a href=\"https:\/\/chiggofactory.com\/abs-cnc-machining\/\">Abs<\/a>,&nbsp;Nylon,&nbsp;Polycarbonate,&nbsp;PEEK<\/li>\n<!-- \/wp:list-item --><\/ul>\n<!-- \/wp:list -->\n\n<!-- wp:paragraph -->\n<p>L'impression 3D fonctionne principalement avec les thermoplastiques, les r\u00e9sines et certaines poudres m\u00e9talliques. Cependant, les pi\u00e8ces m\u00e9talliques imprim\u00e9es en 3D ne se d\u00e9tachent pas bon march\u00e9 \uff0c bien que cela change.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p><strong> les mat\u00e9riaux d'impression 3D courants: <\/strong><\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:list -->\n<ul class=\"wp-block-list\"><!-- wp:list-item -->\n<li><strong>Plastiques:<\/strong>&nbsp;Nylon,&nbsp;PLA, ABS, ULTEM,&nbsp;ASA,&nbsp;TPU<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li><strong>M\u00e9taux:<\/strong>&nbsp;Aluminum, Stainless steel, Titanium,&nbsp;Inconel<\/li>\n<!-- \/wp:list-item --><\/ul>\n<!-- \/wp:list -->\n\n<!-- wp:paragraph -->\n<p>Il convient de noter que les mat\u00e9riaux tr\u00e8s doux et flexibles comme le TPU et le silicone ont tendance \u00e0 se d\u00e9former sous des forces de coupe, ce qui rend difficile l'usinage pr\u00e9cis. De m\u00eame, certains superalliages sont difficiles \u00e0 machine en raison de leur forte r\u00e9sistance, de leur durcissement et de leur r\u00e9sistance \u00e0 la chaleur. Pour ces mat\u00e9riaux, l'impression 3D peut \u00eatre un meilleur choix.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:heading {\"level\":3} -->\n<h3 class=\"wp-block-heading\">Impression 3D vs usinage CNC: qui est mieux pour les pi\u00e8ces complexes?<\/h3>\n<!-- \/wp:heading -->\n\n<!-- wp:paragraph -->\n<p>Bien que les machines \u00e0 5 axes ou plus avanc\u00e9es puissent g\u00e9rer des g\u00e9om\u00e9tries tr\u00e8s complexes, il peut toujours \u00eatre difficile (ou m\u00eame impossible) de cr\u00e9er des fonctionnalit\u00e9s et des sous-d\u00e9pouilles cach\u00e9es, car les outils ne peuvent pas acc\u00e9der \u00e0 toutes les surfaces de la pi\u00e8ce. La g\u00e9om\u00e9trie de l'outil de coupe lui-m\u00eame limite \u00e9galement la capacit\u00e9 de machine \u00e0 la machine parfaitement carr\u00e9. De plus, des luminaires ou des gabarits personnalis\u00e9s sont souvent demand\u00e9s, ce qui peut \u00eatre une limitation significative.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Les imprimantes 3D \u00e9liminent ces d\u00e9fis de g\u00e9om\u00e9trie dans l'usinage CNC. Ils peuvent produire des g\u00e9om\u00e9tries tr\u00e8s complexes avec une relative facilit\u00e9. Bien que les structures de support puissent \u00eatre n\u00e9cessaires pour des processus tels que SLM, le post-traitement suppl\u00e9mentaire ne diminue pas la vaste libert\u00e9 et la complexit\u00e9 de conception que l'impression 3D offre.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:heading {\"level\":3} -->\n<h3 class=\"wp-block-heading\">L'impression 3D ou l'usinage CNC offrent-ils une meilleure pr\u00e9cision dimensionnelle?<\/h3>\n<!-- \/wp:heading -->\n\n<!-- wp:image {\"id\":3012,\"sizeSlug\":\"full\",\"linkDestination\":\"none\"} -->\n<figure class=\"wp-block-image size-full\"><img src=\"https:\/\/chiggofactory.com\/wp-content\/uploads\/2025\/03\/CNC-parts.jpg\" alt=\"CNC machined parts\" class=\"wp-image-3012\"><\/figure>\n<!-- \/wp:image -->\n\n<!-- wp:paragraph -->\n<p>L'impression 3D est g\u00e9n\u00e9ralement moins pr\u00e9cise que l'usinage CNC en raison de facteurs tels que le retrait du mat\u00e9riau et les limites de r\u00e9solution du processus d'impression. Par exemple, des technologies d'impression 3D pr\u00e9cises comme le SLA atteignent g\u00e9n\u00e9ralement des tol\u00e9rances d'environ \u00b1 0,1 mm dans des conditions standard. En revanche, les machines CNC de pr\u00e9cision peuvent maintenir des tol\u00e9rances aussi serr\u00e9es que \u00b1 0,025 mm (0,001 \u2033) ou m\u00eame mieux.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>En ce qui concerne la r\u00e9p\u00e9tabilit\u00e9 de l'impression 3D - m\u00eame des m\u00e9thodes de haute pr\u00e9cision comme SLA ou DLP - toujours \u00e0 la tra\u00eene derri\u00e8re l'usinage CNC. Les machines CNC offrent une coh\u00e9rence sup\u00e9rieure en raison de leurs configurations m\u00e9caniques rigides, de leurs syst\u00e8mes de contr\u00f4le pr\u00e9cis et de l'uniformit\u00e9 du processus soustractif. En revanche, l'impression 3D est plus sensible \u00e0 la variabilit\u00e9 caus\u00e9e par le retrait des mat\u00e9riaux, l'adh\u00e9sion de la couche et les facteurs environnementaux.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:heading {\"level\":3} -->\n<h3 class=\"wp-block-heading\">Comment la finition de surface se compare-t-elle entre l'impression 3D et l'usinage CNC?<\/h3>\n<!-- \/wp:heading -->\n\n<!-- wp:paragraph -->\n<p>Les imprimantes 3D comme le SLA peuvent produire des pi\u00e8ces avec des couches fines, lisses et textur\u00e9es, mais l'usinage CNC, avec les bons outils, peut atteindre des surfaces encore plus lisses.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Les deux m\u00e9thodes peuvent \u00eatre encore am\u00e9lior\u00e9es avec une vari\u00e9t\u00e9 de <a href=\"https:\/\/chiggofactory.com\/surface-finishing-service\/\"> Options de finition de surface <\/a> Pour am\u00e9liorer les qualit\u00e9s fonctionnelles et cosm\u00e9tiques des pi\u00e8ces. Par exemple, les pi\u00e8ces usin\u00e9es CNC peuvent \u00eatre <a href=\"https:\/\/chiggofactory.com\/a-detailed-guide-to-aluminim-anodising\/\"> anodis\u00e9 <\/a>, coup\u00e9 en poudre, francs et passiv\u00e9. De m\u00eame, les options de finition de surface pour les pi\u00e8ces imprim\u00e9es en 3D incluent <a href=\"https:\/\/chiggofactory.com\/electroplating-guide-how-it-works-ypes-benefits\/\"> placage <\/a>, dynamitage, polissage et traitements de chaleur pour renforcer le produit.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:heading {\"level\":3} -->\n<h3 class=\"wp-block-heading\">Combien de pi\u00e8ces fabriquez-vous et co\u00fbte-t-il une pr\u00e9occupation principale?<\/h3>\n<!-- \/wp:heading -->\n\n<!-- wp:image {\"id\":3013,\"width\":\"840px\",\"height\":\"auto\",\"sizeSlug\":\"full\",\"linkDestination\":\"none\"} -->\n<figure class=\"wp-block-image size-full is-resized\"><img src=\"https:\/\/chiggofactory.com\/wp-content\/uploads\/2025\/03\/cost-vs-quantity.png\" alt=\"cost-vs-quantity\" class=\"wp-image-3013\" style=\"width:840px;height:auto\"><\/figure>\n<!-- \/wp:image -->\n\n<!-- wp:paragraph -->\n<p>Pour les pi\u00e8ces avec des g\u00e9om\u00e9tries typiques (celles qui peuvent \u00eatre relativement facilement r\u00e9alis\u00e9es avec CNC), le choix d\u00e9pend \u00e0 la fois du mat\u00e9riau et de la quantit\u00e9 de pi\u00e8ces.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p><strong> pour les pi\u00e8ces en plastique: <\/strong><\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:list -->\n<ul class=\"wp-block-list\"><!-- wp:list-item -->\n<li>Si vous produisez un faible volume de pi\u00e8ces (1 \u00e0 10 unit\u00e9s), l'impression 3D est votre meilleure option en raison de ses exigences de configuration minimales.<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li>Lorsque vous traitez avec des volumes moyens (10-100 unit\u00e9s), l'impression 3D est toujours un bon choix, mais vous voudrez peut-\u00eatre \u00e9galement envisager l'usinage CNC.<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li>\u00c0 mesure que le volume augmente (100-1000 unit\u00e9s), l'usinage CNC devient plus efficace en raison des co\u00fbts d'installation amortis et le moulage par injection pourrait \u00e9galement \u00eatre une option pour certaines conceptions.<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li>Pour les tr\u00e8s grands volumes (plus de 1000 unit\u00e9s), le moulage par injection devient g\u00e9n\u00e9ralement le meilleur choix pour les pi\u00e8ces en plastique, plut\u00f4t que d'utiliser l'impression 3D ou le CNC.<\/li>\n<!-- \/wp:list-item --><\/ul>\n<!-- \/wp:list -->\n\n<!-- wp:paragraph -->\n<p><strong> Pour les pi\u00e8ces m\u00e9talliques <\/strong>, la situation est assez diff\u00e9rente:<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:list -->\n<ul class=\"wp-block-list\"><!-- wp:list-item -->\n<li>Lors de la production de volumes faibles \u00e0 moyens (1-100 unit\u00e9s), l'usinage CNC est souvent pr\u00e9f\u00e9r\u00e9, car l'impression 3D m\u00e9tallique peut \u00eatre assez co\u00fbteuse.<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li>Pour des volumes plus \u00e9lev\u00e9s (100-1000 unit\u00e9s), l'usinage CNC est la m\u00e9thode la plus courante, mais la coul\u00e9e d'investissement pourrait \u00e9galement \u00eatre une option<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li>Pour les volumes importants (plus de 1000 unit\u00e9s), l'investissement ou la moulage est g\u00e9n\u00e9ralement le meilleur choix.<\/li>\n<!-- \/wp:list-item --><\/ul>\n<!-- \/wp:list -->\n\n<!-- wp:heading -->\n<h2 class=\"wp-block-heading\">Les meilleurs conseils de Chicago pour choisir entre l'impression 3D et l'usinage CNC<\/h2>\n<!-- \/wp:heading -->\n\n<!-- wp:paragraph -->\n<p>La s\u00e9lection de la bonne technologie de fabrication pour vos pi\u00e8ces personnalis\u00e9es peut sembler \u00eatre un d\u00e9fi insurmontable, mais il n'est pas n\u00e9cessaire de l'\u00eatre. Comme nous le disons toujours \u00e0 nos clients de Chiggo, il n'y a pas de m\u00e9thode de fabrication parfaite et unique. Le meilleur choix d\u00e9pend d'une vari\u00e9t\u00e9 de facteurs. Pour guider votre d\u00e9cision, nous avons \u00e9labor\u00e9 quelques r\u00e8gles de base essentielles:<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:list -->\n<ul class=\"wp-block-list\"><!-- wp:list-item -->\n<li><strong>Choisissez l'usinage CNC<\/strong> if you're producing parts in medium to high quantities with relatively simple geometries.<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li><strong>Choisissez l'usinage CNC<\/strong> if precision and durability are key, especially for applications requiring long-term reliability, such as aerospace and medical components.<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li><strong>Choisissez l'impression 3D<\/strong> for lower quantities of parts or rapid prototypes, particularly if your designs have complex geometries.<\/li>\n<!-- \/wp:list-item -->\n\n<!-- wp:list-item -->\n<li>When dealing with metal parts, <strong>Usinage CNC<\/strong>can be price-competitive even for low quantities, but geometry limitations still apply.<\/li>\n<!-- \/wp:list-item --><\/ul>\n<!-- \/wp:list -->\n\n<!-- wp:image {\"id\":3014,\"width\":\"840px\",\"height\":\"auto\",\"sizeSlug\":\"full\",\"linkDestination\":\"none\"} -->\n<figure class=\"wp-block-image size-full is-resized\"><img src=\"https:\/\/chiggofactory.com\/wp-content\/uploads\/2025\/03\/complexity-vs.-quantity.png\" alt=\"complexity vs. quantity\" class=\"wp-image-3014\" style=\"width:840px;height:auto\"><\/figure>\n<!-- \/wp:image -->\n\n<!-- wp:paragraph -->\n<p>Si vous n'\u00eates toujours pas certain de la meilleure m\u00e9thode de fabrication pour votre part, <a href=\"https:\/\/chiggofactory.com\/contact\/\"> Contactez nos ing\u00e9nieurs <\/a> et t\u00e9l\u00e9chargez votre conception. Chiggo est l'un des principaux fournisseurs de <a href=\"https:\/\/chiggofactory.com\/cnc-machining\/\"> CNC Machining <\/a> et des services d'impression 3D en Chine, avec une \u00e9quipe exp\u00e9riment\u00e9e ici pour vous aider!<\/p>\n<!-- \/wp:paragraph -->","protected":false},"excerpt":{"rendered":"<p>La plus grande diff\u00e9rence entre l&#8217;impression 3D et l&#8217;usinage CNC est qu&#8217;une m\u00e9thode construit la couche de pi\u00e8ces par couche, tandis que l&#8217;autre fonctionne en supprimant le mat\u00e9riau. Si vous vous trouvez \u00e0 un carrefour en choisissant entre l&#8217;usinage CNC et l&#8217;impression 3D pour vos produits, lisez la suite pour en savoir plus.<\/p>\n","protected":false},"author":2,"featured_media":3008,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[15,18],"tags":[],"class_list":["post-3003","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cnc-machining","category-3d-printing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>3D Printing vs. CNC Machining: What Is the Best Way to Make Your Part? - Chiggo<\/title>\n<meta name=\"description\" content=\"Explore the practical differences between CNC machining and 3D printing, and learn how to choose the right method for your prototype or production part.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/chiggofactory.com\/fr\/3d-printing-vs-cnc-machining\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"3D Printing vs. CNC Machining: What Is the Best Way to Make Your Part? 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