{"id":34921,"date":"2023-04-18T20:00:29","date_gmt":"2023-04-19T00:00:29","guid":{"rendered":"https:\/\/www.mastercam.com\/success-stories\/alimentation-achates\/"},"modified":"2026-02-10T15:24:42","modified_gmt":"2026-02-10T20:24:42","slug":"alimentation-achates","status":"publish","type":"casestudy","link":"https:\/\/www.mastercam.com\/fr\/success-stories\/alimentation-achates\/","title":{"rendered":"Alimentation Achates"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">L&rsquo;usinage complexe remplace la fonderie pour les composants en deux pi\u00e8ces des prototypes de pistons<\/h2>\n\n<p class=\"wp-block-paragraph\">L&rsquo;entreprise Achates Power de San Diego, en Californie, utilise Mastercam pour cr\u00e9er des pi\u00e8ces prototypes pour un moteur \u00e0 essence \u00e0 allumage par compression et \u00e0 pistons oppos\u00e9s, respectueux de l&rsquo;environnement. Cette recherche collaborative est le fruit du travail d&rsquo;Achates, de l&rsquo;Argonne National Laboratory et de Delphi Technologies. Elle a \u00e9t\u00e9 r\u00e9alis\u00e9e gr\u00e2ce au financement du programme ARPA-E du minist\u00e8re am\u00e9ricain de l&rsquo;\u00e9nergie.  <\/p>\n\n<h2 class=\"wp-block-heading\">En bref<\/h2>\n\n<ul class=\"wp-block-list\" id=\"block-be8afe9f-0ff8-4e90-a005-beb57c347393\"><li><strong>Product Used:<\/strong> Mill, Port Expert, Dynamic Milling<\/li><li><strong>Industrie :<\/strong> Transport<\/li><\/ul>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"341\" src=\"http:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/AchatesGroupShot-1024x341.jpeg\" alt=\"\" class=\"wp-image-7949\" srcset=\"https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/AchatesGroupShot-1024x341.jpeg 1024w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/AchatesGroupShot-300x100.jpeg 300w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/AchatesGroupShot-768x256.jpeg 768w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/AchatesGroupShot-1536x512.jpeg 1536w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/AchatesGroupShot-112x37.jpeg 112w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/AchatesGroupShot-224x75.jpeg 224w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/AchatesGroupShot.jpeg 1800w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<h2 class=\"wp-block-heading\">D\u00e9tails du projet<\/h2>\n\n<ul class=\"wp-block-list\"><li><strong>The Challenge<\/strong>: Machine prototype parts that mimic the performance of production-ready steel using billet rather than casting them. Undercuts and cavities are difficult to cut on two-piece piston assemblies. <\/li><li>The Solution: Mill, Port Expert, Dynamic Milling<\/li><li><strong>Avantages :<\/strong><ul><li>Module compl\u00e9mentaire Port Expert pour les trajectoires de portage de culasses de moteurs sur les surfaces de port ou les donn\u00e9es solides. Il utilise des sucettes et effectue des contr\u00f4les de collision pendant la programmation. <\/li><li>Parcours d&rsquo;outils dynamiques de fraisage 5 axes pour les g\u00e9om\u00e9tries complexes et l&rsquo;\u00e9bauche : parcours d&rsquo;outils multiaxes d&rsquo;isoparam\u00e9trie, de fraisage en roulant et d&rsquo;\u00e9bauche.<\/li><li>La fonction Verify permet aux programmeurs de confirmer les parcours d&rsquo;outils avant l&rsquo;usinage. Ils peuvent ainsi programmer les parcours d&rsquo;outils et les avoir pr\u00eats lorsque le travail pr\u00e9c\u00e9dent est termin\u00e9.<\/li><\/ul><\/li><\/ul>\n\n<p class=\"wp-block-paragraph\">One engine stood out at the 2018 North American International Auto Show in Detroit, Michigan: the new eco-friendly, gasoline compression ignition, opposed-piston engine from <a href=\"https:\/\/achatespower.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">Achates Power<\/a> in San Diego, California. The collaborative research was the work of Achates, Argonne National Laboratory, and Delphi Technologies. It was produced using funding from the U.S. Department of Energy\u2019s ARPA-E program. The revolutionary design results in an engine which requires no cylinder heads, reducing heat loss and increasing efficiency. Achates, a design company that licenses the technology, is currently prototyping the green engine\u2019s parts.<\/p>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"http:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/MannyRodriguezWorkingOnPrototypeGasEngine-2048x1363-1-1024x682.jpeg\" alt=\"\" class=\"wp-image-7954\" srcset=\"https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/MannyRodriguezWorkingOnPrototypeGasEngine-2048x1363-1-1024x682.jpeg 1024w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/MannyRodriguezWorkingOnPrototypeGasEngine-2048x1363-1-300x200.jpeg 300w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/MannyRodriguezWorkingOnPrototypeGasEngine-2048x1363-1-768x511.jpeg 768w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/MannyRodriguezWorkingOnPrototypeGasEngine-2048x1363-1-1536x1022.jpeg 1536w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/MannyRodriguezWorkingOnPrototypeGasEngine-2048x1363-1-112x75.jpeg 112w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/MannyRodriguezWorkingOnPrototypeGasEngine-2048x1363-1-224x149.jpeg 224w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/MannyRodriguezWorkingOnPrototypeGasEngine-2048x1363-1.jpeg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<p class=\"wp-block-paragraph\">Les pistons de production seront des pi\u00e8ces en deux parties, coul\u00e9es puis soud\u00e9es. Leurs prototypes sont usin\u00e9s \u00e0 l&rsquo;aide de Mastercam. Sergio Ramirez, chef d&rsquo;atelier chez Achates, explique que la fonderie de prototypes est inefficace ; chaque prototype de piston est test\u00e9 minutieusement, puis la conception est l\u00e9g\u00e8rement modifi\u00e9e. Avec autant de petits changements de conception, la fonderie de prototypes est tout simplement prohibitive en termes de co\u00fbts. Malheureusement, les mat\u00e9riaux de prototypage rapide ne r\u00e9sistent pas aux cycles de chauffage et de refroidissement associ\u00e9s \u00e0 ce processus. M. Ramirez utilise donc des billettes en acier 4140 et 4340.    <\/p>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"681\" height=\"1024\" src=\"http:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/PistonBeingMachined-768x1154-1-681x1024.jpeg\" alt=\"\" class=\"wp-image-7959\" srcset=\"https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/PistonBeingMachined-768x1154-1-681x1024.jpeg 681w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/PistonBeingMachined-768x1154-1-200x300.jpeg 200w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/PistonBeingMachined-768x1154-1-75x112.jpeg 75w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/PistonBeingMachined-768x1154-1-149x224.jpeg 149w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/PistonBeingMachined-768x1154-1.jpeg 768w\" sizes=\"auto, (max-width: 681px) 100vw, 681px\" \/><\/figure>\n\n<p class=\"wp-block-paragraph\">\u00ab\u00a0L&rsquo;usinage de cet assemblage a \u00e9t\u00e9 le plus grand d\u00e9fi en raison des cavit\u00e9s profondes et des rayons dans les coins ; les petits outils de coupe n&rsquo;aiment tout simplement pas cela. De plus, chaque fois que vous soudez deux pi\u00e8ces ensemble, un mode de d\u00e9faillance est possible. Vous ne voulez pas que le piston se brise pendant l&rsquo;usinage, et encore moins dans un moteur. Mais nous l&rsquo;avons d\u00e9pass\u00e9 et nous n&rsquo;avons eu aucune d\u00e9faillance. C&rsquo;est probablement le plus grand d\u00e9fi que nous ayons eu \u00e0 relever : essayer d&rsquo;imiter les performances d&rsquo;un piston en acier pr\u00eat \u00e0 la production en utilisant des billettes\u00a0\u00bb, a d\u00e9clar\u00e9 M. Ramirez.<\/p>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"681\" height=\"1024\" src=\"http:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/PistonsCylinderLinersAndPistonWristPinCarrier-768x1154-1-681x1024.jpeg\" alt=\"\" class=\"wp-image-7964\" srcset=\"https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/PistonsCylinderLinersAndPistonWristPinCarrier-768x1154-1-681x1024.jpeg 681w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/PistonsCylinderLinersAndPistonWristPinCarrier-768x1154-1-200x300.jpeg 200w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/PistonsCylinderLinersAndPistonWristPinCarrier-768x1154-1-75x112.jpeg 75w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/PistonsCylinderLinersAndPistonWristPinCarrier-768x1154-1-149x224.jpeg 149w, https:\/\/www.mastercam.com\/wp-content\/uploads\/2023\/04\/PistonsCylinderLinersAndPistonWristPinCarrier-768x1154-1.jpeg 768w\" sizes=\"auto, (max-width: 681px) 100vw, 681px\" \/><\/figure>\n\n<p class=\"wp-block-paragraph\">Machining undercuts and cavities in the two-part pistons is more difficult than casting them. Once welded, the underside of the crown is difficult to reach. Trevor Bailey, technical support specialist at San Diego <a href=\"https:\/\/www.mastercam.com\/fr\/solutions\/\">CAD\/CAM<\/a> sat down with Ramirez to find a solution. Together, they redesigned the process so that the two pieces were not welded together until the crown\u2019s undercuts were made. Then came the delicate machining.<\/p>\n\n<p class=\"wp-block-paragraph\">Once the piston crown is welded to the bottom piece, machining the internal cavities is a matter of precision. At Bailey\u2019s suggestion, Ramirez decided to use <a href=\"https:\/\/www.mastercam.com\/solutions\/port-expert\/\">Port Expert<\/a>, a Mastercam add-on that uses collision checks during machining to avoid tool and material damage. <\/p>\n\n<p class=\"wp-block-paragraph\">\u00ab\u00a0Port Expert nous permet d&rsquo;incliner davantage l&rsquo;outil dans une trajectoire de coupe tangente le long de la surface. Nous avons un meilleur contr\u00f4le de la vectorisation de l&rsquo;outil et nous sommes en mesure d&rsquo;utiliser les surfaces optimales des goujures de coupe sur les fraises en bout\u00a0\u00bb, a d\u00e9clar\u00e9 M. Ramirez.<\/p>\n\n<p class=\"wp-block-paragraph\">M. Ramirez s&rsquo;attend \u00e0 ce que le nouveau moteur soit test\u00e9 sur route d\u00e8s cette ann\u00e9e. \u00ab\u00a0D&rsquo;ici \u00e0 la fin de l&rsquo;ann\u00e9e 2019, nous aurons effectu\u00e9 des milliers d&rsquo;heures d&rsquo;essai et parcouru des milliers de kilom\u00e8tres avec ce moteur\u00a0\u00bb, a-t-il d\u00e9clar\u00e9. Les licences de fabrication seront ensuite vendues aux fabricants pour la production.  <\/p>\n\n<p class=\"wp-block-paragraph\">Le moteur \u00e0 pistons oppos\u00e9s de M. Achates devrait co\u00fbter 1 000 dollars de moins que les moteurs diesel comparables et sera \u00e9tonnamment efficace pour un moteur de camionnette de grande taille, avec une consommation de 37 miles par gallon. Les consommateurs peuvent se r\u00e9jouir de disposer d&rsquo;un moteur respectueux de l&rsquo;environnement et de leur portefeuille. <\/p>\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\u00ab\u00a0Je pense que Mastercam vous permet de personnaliser \u00e0 peu pr\u00e8s tout jusqu&rsquo;aux postes et aux pr\u00e9f\u00e9rences personnelles. L&rsquo;ann\u00e9e derni\u00e8re, nous avons achet\u00e9 une machine dont la configuration \u00e9tait diff\u00e9rente de toutes les autres. Avec la combinaison de 5 axes diff\u00e9rents qui sont dans des plans diff\u00e9rents de ceux des autres machines, vous avez besoin d&rsquo;un poste pour pouvoir g\u00e9n\u00e9rer du code G. Il n&rsquo;y avait pas de poste existant pour cette machine. Il n&rsquo;existait pas de g\u00e9n\u00e9ration du code pour cette machine. Pouvoir g\u00e9n\u00e9rer des codes et des param\u00e8tres, en utilisant tous les diff\u00e9rents r\u00e9glages de Mastercam, a \u00e9t\u00e9 facile pour moi et tr\u00e8s utile.\u00a0\u00bb<\/p><cite>Sergio Ramirez, chef d&rsquo;atelier \u00e0 l&rsquo;alimentation Achates, San Diego, Californie<\/cite><\/blockquote>\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"featured_media":7951,"menu_order":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"industry":[],"class_list":["post-34921","casestudy","type-casestudy","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Alimentation Achates - mastercam.com<\/title>\n<meta name=\"description\" content=\"L&#039;usinage complexe remplace la fonderie pour les composants en deux pi\u00e8ces des prototypes de pistons L&#039;entreprise Achates Power de San Diego, en\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.mastercam.com\/fr\/success-stories\/alimentation-achates\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Alimentation Achates - 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