{"id":115078,"date":"2025-06-25T16:31:20","date_gmt":"2025-06-25T14:31:20","guid":{"rendered":"https:\/\/xometry.pro\/stories\/practical-engineer-exploring-magnetic-couplings\/"},"modified":"2025-06-30T09:46:35","modified_gmt":"2025-06-30T07:46:35","slug":"accouplements-magnetiques-sans-engrenages","status":"publish","type":"stories","link":"https:\/\/xometry.pro\/fr\/temoignages\/accouplements-magnetiques-sans-engrenages\/","title":{"rendered":"Comment j\u2019ai explor\u00e9 les accouplements magn\u00e9tiques, sans engrenages et\u00a0 sans courroies"},"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-concevoir-un-moteur-sans-contact\">Pourquoi concevoir un moteur sans contact ?<\/a>\n\n<\/li>\n<li><a href=\"#h-du-modele-cao-au-cuivre-et-aux-aimants\">Du mod\u00e8le CAO au cuivre et aux aimants<\/a>\n\n\n<\/li>\n\n<li><a href=\"#h-applications-concretes\">Applications concr\u00e8tes<\/a>\n\n<\/li>\n<li><a href=\"#h-et-ensuite\">Et ensuite ?<\/a>\n<\/li><\/ul><\/div>\n\n\n<p>Dipl\u00f4m\u00e9 en ing\u00e9nierie a\u00e9rospatiale et passionn\u00e9 par la conception pratique, je passe la majorit\u00e9 de mon temps \u00e0 exp\u00e9rimenter et \u00e0 construire des objets fonctionnels. \u00c0 travers ma <a href=\"https:\/\/www.youtube.com\/thepracticalengineer\">cha\u00eene YouTube<\/a>, je partage des d\u00e9fis techniques comme celui-ci pour inspirer les autres \u00e0 se lancer, eux aussi, dans la fabrication.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"h-pourquoi-concevoir-un-moteur-sans-contact\"><strong><strong>Pourquoi concevoir un moteur sans contact ?<\/strong><\/strong><\/h2>\n\n\n<p>J\u2019avais d\u00e9j\u00e0 entendu parler des accouplements magn\u00e9tiques, surtout dans les agitateurs magn\u00e9tiques utilis\u00e9s au fond des b\u00e9chers de laboratoire \u2014 ce champ magn\u00e9tique tournant qui entra\u00eene une petite tige dans un r\u00e9cipient ferm\u00e9. Mais je n\u2019en avais jamais construit moi-m\u00eame.<\/p>\n\n\n\n<p>C\u2019\u00e9tait donc le d\u00e9fi parfait pour mettre me mettre au boulot : jusqu\u2019o\u00f9 pouvait-on aller avec ces connexions sans contact ? Pourrais-je r\u00e9ellement faire tourner un axe uniquement gr\u00e2ce \u00e0 la force magn\u00e9tique \u2014 et surtout, pourrais-je le contr\u00f4ler ?<\/p>\n\n\n\n<p>En explorant diff\u00e9rentes configurations, je suis tomb\u00e9 sur une variante \u00e9tonnante qui ne reposait m\u00eame pas sur un deuxi\u00e8me aimant. \u00c0 la place : une simple plaque de cuivre et des aimants en rotation. C\u2019est l\u00e0 que tout a vraiment commenc\u00e9 \u00e0 devenir int\u00e9ressant.<\/p>\n\n\n\n<p>Ce montage utilise les courants de Foucault \u2014 ces boucles de courant induites dans les conducteurs, qui g\u00e9n\u00e8rent \u00e0 leur tour des champs magn\u00e9tiques oppos\u00e9s. C\u2019est le m\u00eame principe qu\u2019on retrouve dans les syst\u00e8mes de freinage magn\u00e9tique des montagnes russes ou des trains \u00e0 grande vitesse.<\/p>\n\n\n\n<p>Mon objectif \u00e9tait simple : construire les deux versions, les tester, et ressentir les forces en jeu.<\/p>\n\n\n<div id=\"6mQ9z60-kQ4-69e74bd31f3fa\" data-video-id=\"6mQ9z60-kQ4\" class=\"ma-gdpr-youtube-wrapper\" style=\"width:100%;height:56.25%;padding-top:56.25%;\" data-new-window=\"\" data-yt-parameters=\"WyJtYXgtd2lkdGg9XHUyMDFjNzAwcHhcIiJd\"><picture class=\"ma-gdpr-youtube-thumbnail\"><source media=\"(min-width:640px)\" type=\"image\/webp\" srcset=\"\/\/xometry.pro\/wp-content\/uploads\/ma-gdpr-youtube-thumbnails\/6mQ9z60-kQ4\/6mQ9z60-kQ4_hq720.webp\"><source media=\"(min-width:640px)\" type=\"image\/jpeg\" srcset=\"\/\/xometry.pro\/wp-content\/uploads\/ma-gdpr-youtube-thumbnails\/6mQ9z60-kQ4\/6mQ9z60-kQ4_hq720.jpg\"><source media=\"(min-width:320px)\" type=\"image\/webp\" srcset=\"\/\/xometry.pro\/wp-content\/uploads\/ma-gdpr-youtube-thumbnails\/6mQ9z60-kQ4\/6mQ9z60-kQ4_sddefault.webp\"><source media=\"(min-width:320px)\" type=\"image\/jpeg\" srcset=\"\/\/xometry.pro\/wp-content\/uploads\/ma-gdpr-youtube-thumbnails\/6mQ9z60-kQ4\/6mQ9z60-kQ4_sddefault.jpg\"><source media=\"(min-width:240px)\" type=\"image\/webp\" srcset=\"\/\/xometry.pro\/wp-content\/uploads\/ma-gdpr-youtube-thumbnails\/6mQ9z60-kQ4\/6mQ9z60-kQ4_hqdefault.webp\"><source media=\"(min-width:240px)\" type=\"image\/jpeg\" srcset=\"\/\/xometry.pro\/wp-content\/uploads\/ma-gdpr-youtube-thumbnails\/6mQ9z60-kQ4\/6mQ9z60-kQ4_hqdefault.jpg\"><img decoding=\"async\" src=\"\/\/xometry.pro\/wp-content\/uploads\/ma-gdpr-youtube-thumbnails\/6mQ9z60-kQ4\/6mQ9z60-kQ4_mqdefault.jpg\" alt=\"\" title=\"\"><\/picture><svg class=\"ma-gdpr-youtube-button\"><use xlink:href=\"#ma-gdpr-youtube-play-button\"><\/use><\/svg><div class=\"ma-gdpr-youtube-notice\" style=\"font-size:.7em;\"><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading\" id=\"h-du-modele-cao-au-cuivre-et-aux-aimants\"><strong><strong>Du mod\u00e8le CAO au cuivre et aux aimants<\/strong><\/strong><\/h2>\n\n\n<p>Tout a commenc\u00e9 dans Fusion 360, o\u00f9 j\u2019ai mod\u00e9lis\u00e9 deux disques rotatifs, chacun \u00e9quip\u00e9 de six aimants en n\u00e9odyme avec une polarit\u00e9 altern\u00e9e : p\u00f4le nord vers le haut sur l\u2019un, p\u00f4le sud sur l\u2019autre. L\u2019id\u00e9e, c\u2019\u00e9tait que la rotation de l\u2019un entra\u00eene l\u2019autre par simple transfert magn\u00e9tique.<\/p>\n\n\n    <section class=\"article-slider-block\">\r\n        <div class=\"article-content-wrapper\">\r\n            <!-- Swiper -->\r\n            <div class=\"swiper mySwiper2 article-slider-display\">\r\n                <div class=\"swiper-wrapper\">\r\n                                                <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-cad-model-copper-disk.png\" alt=\"CAD model of the copper disk, designed in Fusion 360 to interact with the magnetic coupling.\u00a9\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-cad-model-copper-disk.png\" data-fancybox=\"gallery\" data-caption=\"Mod\u00e8le CAO du disque en cuivre, con\u00e7u dans Fusion 360 pour interagir avec l\u2019accouplement magn\u00e9tique.\u00a9\" aria-label=\"Open full image\">\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-cad-model-copper-disk.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"CAD model of the copper disk, designed in Fusion 360 to interact with the magnetic coupling.\u00a9\" loading=\"lazy\" decoding=\"async\">\r\n                                        <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\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                    <p>Mod\u00e8le CAO du disque en cuivre, con\u00e7u dans Fusion 360 pour interagir avec l\u2019accouplement magn\u00e9tique.\u00a9<\/p>\n                                <\/div>\r\n                            <\/div>\r\n                            \r\n                                                        <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-cnc-machined-copper-disk-scaled.jpg\" alt=\"The CNC-machined copper disk \u2014 delivered by Xometry with a clean bead-blasted finish.\u00a9\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-cnc-machined-copper-disk-scaled.jpg\" data-fancybox=\"gallery\" data-caption=\"Disque en cuivre usin\u00e9 CNC \u2014 livr\u00e9 par Xometry avec une finition sabl\u00e9e propre.\u00a9\" aria-label=\"Open full image\">\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-cnc-machined-copper-disk-scaled.jpg\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"The CNC-machined copper disk \u2014 delivered by Xometry with a clean bead-blasted finish.\u00a9\" loading=\"lazy\" decoding=\"async\">\r\n                                        <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\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                    <p>Disque en cuivre usin\u00e9 CNC \u2014 livr\u00e9 par Xometry avec une finition sabl\u00e9e propre.\u00a9<\/p>\n                                <\/div>\r\n                            <\/div>\r\n                            \r\n                                            <\/div>\r\n            <\/div>\r\n            <div thumbsSlider=\"\" class=\"swiper mySwiper article-slider-list\">\r\n                <div class=\"swiper-wrapper\">\r\n                                            <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-cad-model-copper-disk.png\" alt=\"CAD model of the copper disk, designed in Fusion 360 to interact with the magnetic coupling.\u00a9\">\r\n                        <\/div>\r\n                                                <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-cnc-machined-copper-disk-scaled.jpg\" alt=\"The CNC-machined copper disk \u2014 delivered by Xometry with a clean bead-blasted finish.\u00a9\">\r\n                        <\/div>\r\n                                        <\/div>\r\n            <\/div>\r\n        <\/div>\r\n    <\/section>\r\n    \n\n\n<p>J\u2019ai imprim\u00e9 les bo\u00eetiers en 3D avec mes imprimantes Bambu Lab, et j\u2019ai command\u00e9 les plaques de cuivre sur Xometry.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"h-version-1-aimant-contre-aimant\"><strong><strong>Version 1 : Aimant contre aimant<\/strong><\/strong><\/h3>\n\n\n<p>Cette premi\u00e8re version repose sur deux disques magn\u00e9tiques identiques plac\u00e9s face \u00e0 face. Quand l\u2019un tourne, son champ magn\u00e9tique entra\u00eene directement la rotation du second. L\u2019accouplement \u00e9tait \u00e9tonnamment puissant et ultra-r\u00e9actif.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-aligning-magnet-disks.gif\" alt=\"Aligning the magnet disks during assembly \u2014 alternating poles create the magnetic link.\u00a9\" class=\"wp-image-114732\"\/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-aligning-magnet-disks.gif\" data-fancybox=\"gallery-115078\" data-caption=\"Alignement des disques magn\u00e9tiques lors de l\u2019assemblage \u2014 les p\u00f4les altern\u00e9s assurent le couplage magn\u00e9tique.\u00a9\" aria-label=\"Open full image\"><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-aligning-magnet-disks.gif\" 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\">Alignement des disques magn\u00e9tiques lors de l\u2019assemblage \u2014 les p\u00f4les altern\u00e9s assurent le couplage magn\u00e9tique.\u00a9<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-assembling-magnetic-coupler.gif\" alt=\"Assembling the magnetic coupler \u2014 magnets face each other in alternating polarity.\u00a9\" class=\"wp-image-114744\"\/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-assembling-magnetic-coupler.gif\" data-fancybox=\"gallery-115078\" data-caption=\"Assemblage de l\u2019accouplement magn\u00e9tique \u2014 les aimants se font face avec une polarit\u00e9 altern\u00e9e.\u00a9\" aria-label=\"Open full image\"><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-assembling-magnetic-coupler.gif\" 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\">Assemblage de l\u2019accouplement magn\u00e9tique \u2014 les aimants se font face avec une polarit\u00e9 altern\u00e9e.\u00a9<\/figcaption><\/figure>\n\n\n\n<p>Mais il \u00e9tait aussi trop rigide. Si quoi que ce soit coin\u00e7ait ou r\u00e9sistait, tout le syst\u00e8me s\u2019arr\u00eatait net. Il n\u2019y avait aucun glissement. C\u2019est id\u00e9al pour le transfert de couple, certes, mais pas pour des applications qui exigent de la souplesse ou une s\u00e9curit\u00e9 int\u00e9gr\u00e9e.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"h-version-2-aimant-contre-plaque-de-cuivre\"><strong><strong>Version 2 : Aimant contre plaque de cuivre<\/strong><\/strong><\/h3>\n\n\n<p>C\u2019est l\u00e0 que les choses ont vraiment pris une autre dimension. En faisant tourner le disque magn\u00e9tique pr\u00e8s de la plaque de cuivre, celle-ci s\u2019est mise \u00e0 tourner \u2014 sans aucun contact. C\u2019est la magie des courants de Foucault.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/ractical-engineer-moving-neodymium-magnet-close-to-copper-plate.gif\" alt=\"Though copper isn\u2019t magnetic, the falling magnet slows slightly as eddy currents create resistance just before contact.\u00a9\" class=\"wp-image-114756\"\/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/ractical-engineer-moving-neodymium-magnet-close-to-copper-plate.gif\" data-fancybox=\"gallery-115078\" data-caption=\"Bien que le cuivre ne soit pas magn\u00e9tique, l\u2019aimant en chute ralentit l\u00e9g\u00e8rement : les courants de Foucault cr\u00e9ent une r\u00e9sistance juste avant le contact.\u00a9\" aria-label=\"Open full image\"><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/ractical-engineer-moving-neodymium-magnet-close-to-copper-plate.gif\" 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\">Bien que le cuivre ne soit pas magn\u00e9tique, l\u2019aimant en chute ralentit l\u00e9g\u00e8rement : les courants de Foucault cr\u00e9ent une r\u00e9sistance juste avant le contact.\u00a9<\/figcaption><\/figure>\n\n\n\n<p>C\u2019\u00e9tait comme d\u00e9placer une rame dans du miel. L\u2019interaction \u00e9tait fluide, r\u00e9sistante, autor\u00e9gul\u00e9e. Plus les aimants tournaient vite, plus les courants induits \u2014 et donc le couple transmis \u2014 \u00e9taient puissants. Plus la plaque de cuivre \u00e9tait proche, plus la force \u00e9tait importante.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-copper-plate-begins-spinning.gif\" alt=\"The copper plate begins spinning \u2014 driven only by the magnetic field and eddy currents.\u00a9\" class=\"wp-image-114768\"\/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-copper-plate-begins-spinning.gif\" data-fancybox=\"gallery-115078\" data-caption=\"La plaque de cuivre commence \u00e0 tourner \u2014 entra\u00een\u00e9e uniquement par le champ magn\u00e9tique et les courants de Foucault.\u00a9\" aria-label=\"Open full image\"><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/06\/practical-engineer-copper-plate-begins-spinning.gif\" 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\">La plaque de cuivre commence \u00e0 tourner \u2014 entra\u00een\u00e9e uniquement par le champ magn\u00e9tique et les courants de Foucault.\u00a9<\/figcaption><\/figure>\n\n\n\n<p>Trop \u00e9loign\u00e9e, et l\u2019effet diminuait. Trop proche, et le syst\u00e8me essayait presque de s\u2019auto-propulser. Ce ph\u00e9nom\u00e8ne \u00e9tait \u00e9tonnamment fort \u2014 m\u00eame avec un espace de plus de 8 mm, l\u2019accouplement fonctionnait encore.<\/p>\n\n\n\n<p>Ce qui m\u2019a vraiment bluff\u00e9 : la version avec cuivre fonctionnait aussi en sens inverse. En faisant tourner la plaque de cuivre, c\u2019\u00e9tait le disque aimant\u00e9 qui se mettait en mouvement. Je ne m\u2019y attendais pas du tout.<\/p>\n\n\n\n<p>J\u2019ai m\u00eame test\u00e9 diff\u00e9rentes \u00e9paisseurs : une plaque de 6 mm compar\u00e9e \u00e0 une de 3 mm. La plus fine r\u00e9pondait plus vite, probablement \u00e0 cause de son inertie plus faible.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"h-applications-concretes\"><strong><strong>Applications concr\u00e8tes<\/strong><\/strong><\/h2>\n\n\n<p>Ces syst\u00e8mes peuvent-ils avoir des applications industrielles ? Clairement, oui.<\/p>\n\n\n\n<p>Imaginez un environnement o\u00f9 l\u2019on doit entra\u00eener un axe au travers d\u2019une paroi \u00e9tanche \u2014 typiquement en traitement chimique, en syst\u00e8mes sous-marins ou dans les lignes de production agroalimentaire. Dans ce genre de situations, l\u2019absence de contact est un atout : pas de risque de fuite ni de contamination.<\/p>\n\n\n\n<p>Et ce glissement naturel de la version cuivre pourrait aussi faire office de s\u00e9curit\u00e9 \u2014 d\u00e9marrages en douceur ou d\u00e9brayage automatique en cas de surcharge.<\/p>\n\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-et-ensuite\"><strong><strong>Et ensuite ?<\/strong><\/strong><\/h2>\n\n\n<p>Si je devais cr\u00e9er une nouvelle version, je concevrais un syst\u00e8me permettant d\u2019ajuster dynamiquement la distance entre le disque aimant\u00e9 et la plaque de cuivre. Cela permettrait de r\u00e9gler avec pr\u00e9cision la force transmise.<\/p>\n\n\n\n<p>Je testerais aussi d\u2019autres configurations d\u2019aimants ou de mat\u00e9riaux \u2014 peut-\u00eatre m\u00eame en faire une vraie solution industrielle.<\/p>\n\n\n\n<p>Pour l\u2019instant, je suis juste ravi d\u2019avoir tent\u00e9 la version cuivre \u2014 m\u00eame si je n\u2019y croyais pas au d\u00e9but. Comme quoi, ce sont parfois les id\u00e9es les plus improbables qui donnent les meilleurs r\u00e9sultats.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-alpha-channel-opacity has-background\" style=\"background-color:#f5f7f8;color:#f5f7f8\"\/>\n\n\n\n<p><strong>Vous voulez voir comment tout cela fonctionne ? Regardez la vid\u00e9o compl\u00e8te sur ma cha\u00eene.<\/strong> Et si vous avez une id\u00e9e d\u2019utilisation concr\u00e8te pour les accouplements magn\u00e9tiques, n\u2019h\u00e9sitez pas \u00e0 me l\u2019envoyer \u2014 je suis toujours preneur de nouveaux d\u00e9fis.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"author":50,"featured_media":114701,"comment_status":"open","ping_status":"closed","template":"","c-tag-stories":[1658],"global-tag":[1698],"class_list":["post-115078","stories","type-stories","status-publish","has-post-thumbnail","hentry","c-tag-stories-loisirs","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>Des accouplements magn\u00e9tiques sans engrenages ni courroies | Xometry Pro<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez comment faire tourner une h\u00e9lice sans engrenages ni courroies, uniquement gr\u00e2ce aux aimants. 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