{"id":77532,"date":"2024-02-06T10:17:01","date_gmt":"2024-02-06T15:17:01","guid":{"rendered":"https:\/\/mayahtt.com\/?p=77532"},"modified":"2024-02-06T10:18:28","modified_gmt":"2024-02-06T15:18:28","slug":"usinage-cavite-vs-ebauche-adaptative-3d-nouvelle-methode-debauche-grande-vitesse","status":"publish","type":"post","link":"https:\/\/www.mayahtt.com\/fr\/blog\/usinage-cavite-vs-ebauche-adaptative-3d-nouvelle-methode-debauche-grande-vitesse\/","title":{"rendered":"Usinage de cavit\u00e9 vs \u00e9bauche adaptative 3D et nouvelle m\u00e9thode d\u2019\u00e9bauche \u00e0 grande vitesse"},"content":{"rendered":"<h2>Comparaison des r\u00e9sultats de trois op\u00e9rations 2,5\u00a0axes diff\u00e9rentes<\/h2>\n<p>Les programmeurs CAM ont pour mission de trouver la meilleure m\u00e9thode de fabrication pour la pi\u00e8ce sp\u00e9cifique qu\u2019ils doivent fabriquer. Souvent, plusieurs op\u00e9rations peuvent accomplir la m\u00eame t\u00e2che. Dans cet article, nous comparons trois op\u00e9rations distinctes et leurs impacts objectifs sur le processus.<\/p>\n<p>Quoique l\u2019analyse soit effectu\u00e9e sur des op\u00e9rations 2,5\u00a0axes, ces strat\u00e9gies peuvent \u00e9galement \u00eatre appliqu\u00e9es pour l\u2019usinage multiaxes. Les combinaisons potentielles de pi\u00e8ces, d\u2019outils de d\u00e9coupe et de param\u00e8tres de processus sont pratiquement illimit\u00e9es.<\/p>\n<p><a href=\"https:\/\/mayahtt.com\/fr\/products\/nx-cam\/\">En savoir plus sur NX CAM<\/a><\/p>\n<h2><img decoding=\"async\" class=\"alignright size-full wp-image-77273\" src=\"https:\/\/mayahtt.com\/wp-content\/uploads\/2024\/01\/comparison-part-block.png\" alt=\"The part used for comparison was a 6\u201d by 6\u201d block with a 3\/4\u201d deep profile\" width=\"344\" height=\"269\" srcset=\"https:\/\/www.mayahtt.com\/wp-content\/uploads\/2024\/01\/comparison-part-block.png 344w, https:\/\/www.mayahtt.com\/wp-content\/uploads\/2024\/01\/comparison-part-block-300x235.png 300w\" sizes=\"(max-width: 344px) 100vw, 344px\" \/>Montage de l\u2019exp\u00e9rience<\/h2>\n<p>Nous examinerons en d\u00e9tail deux strat\u00e9gies plus r\u00e9centes, l\u2019\u00e9bauche adaptative 3D et l\u2019\u00e9bauche \u00e0 grande vitesse, et nous les comparerons \u00e0 l\u2019approche traditionnelle d\u2019usinage de cavit\u00e9.<\/p>\n<h2>La pi\u00e8ce<\/h2>\n<p>La pi\u00e8ce utilis\u00e9e pour effectuer la comparaison \u00e9tait un bloc de 6\u201d sur 6\u201d (environ 15\u00a0cm x 15\u00a0cm) avec un profil\u00e9 profond de 3\/4\u201d (1,9\u00a0cm).<\/p>\n<p>Une forme g\u00e9om\u00e9trique relativement simple a \u00e9t\u00e9 choisie pour faciliter la comparaison entre les diff\u00e9rentes trajectoires d&rsquo;outils. Cette forme comprend des coins concaves et convexes.<\/p>\n<p>Le mat\u00e9riel hypoth\u00e9tique pour cette pi\u00e8ce est le titane grade 5 (Ti-6Al-4V).<\/p>\n<h3>L\u2019outil<\/h3>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-77275\" src=\"https:\/\/mayahtt.com\/wp-content\/uploads\/2024\/01\/milling-tool.png\" alt=\"a \u00bd\u201d endmill from GARR\u2019s VX-7 series and cutting parameters recommended by GARR\" width=\"240\" height=\"395\" srcset=\"https:\/\/www.mayahtt.com\/wp-content\/uploads\/2024\/01\/milling-tool.png 240w, https:\/\/www.mayahtt.com\/wp-content\/uploads\/2024\/01\/milling-tool-182x300.png 182w\" sizes=\"(max-width: 240px) 100vw, 240px\" \/><\/p>\n<p>Nous avons choisi de simuler en utilisant une fraise en bout 1\/2\u201d s\u00e9ries VX-7 de GARR et les param\u00e8tres de coupe recommand\u00e9s par GARR. Nous souhaitons faire r\u00e9f\u00e9rence aux tableaux de vitesse et d\u2019avance publi\u00e9s pour assurer que l\u2019analyse est effectu\u00e9e en utilisant des conditions de coupe r\u00e9alistes.<\/p>\n<h3><img decoding=\"async\" class=\"alignright size-full wp-image-77277\" src=\"https:\/\/mayahtt.com\/wp-content\/uploads\/2024\/01\/cutting-parameters-table.png\" alt=\"Cutting parameters table\" width=\"424\" height=\"213\" srcset=\"https:\/\/www.mayahtt.com\/wp-content\/uploads\/2024\/01\/cutting-parameters-table.png 424w, https:\/\/www.mayahtt.com\/wp-content\/uploads\/2024\/01\/cutting-parameters-table-300x151.png 300w\" sizes=\"(max-width: 424px) 100vw, 424px\" \/>Param\u00e8tres de coupe<\/h3>\n<ul>\n<li>Vitesse\n<ul>\n<li>200 SFM<\/li>\n<\/ul>\n<\/li>\n<li>Engagement\u00a0:\n<ul>\n<li>Axial 0,750<\/li>\n<li>Radial 15\u00a0%<\/li>\n<\/ul>\n<\/li>\n<li>Charge\u00a0de copeaux\u00a0:\n<ul>\n<li>0,0025<\/li>\n<\/ul>\n<\/li>\n<li>Avance\n<ul>\n<li>0,035\u00a0IPT<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>En raison de l\u2019engagement radial relativement faible, il est n\u00e9cessaire de corriger le taux d\u2019avance pour atteindre la charge des copeaux souhait\u00e9e.<\/p>\n<h2><img decoding=\"async\" class=\"alignleft size-full wp-image-77280\" src=\"https:\/\/mayahtt.com\/wp-content\/uploads\/2024\/01\/mal-npro-steps.png\" alt=\"mal npro steps\" width=\"153\" height=\"225\" \/>M\u00e9thode d\u2019analyse<\/h2>\n<p>L\u2019analyse a \u00e9t\u00e9 faite en utilisant NPRO sous NX. Les donn\u00e9es ont \u00e9t\u00e9 export\u00e9es et pr\u00e9sent\u00e9es au format Excel pour faciliter la comparaison directe entre les trajectoires d&rsquo;outils. Les temps de cycle sont d\u00e9termin\u00e9s en utilisant les valeurs par d\u00e9faut de NX, ce qui devrait fournir une comparaison repr\u00e9sentative.<\/p>\n<p>NPRO peut optimiser les op\u00e9rations autour d\u2019objectifs d\u00e9finis par l\u2019utilisateur tels que la puissance, la force d\u2019avance et l\u2019\u00e9paisseur de copeaux. Dans cette analyse, nous n\u2019avons pas optimis\u00e9 les trajectoires d&rsquo;outils, mais nous avons simplement utilis\u00e9 les outils d\u2019analyse pour comprendre et comparer.<\/p>\n<h2>Comparaison<\/h2>\n<p>Nous comparerons la force de flexion de l\u2019outil sur le plan XY, ainsi que la charge de copeaux r\u00e9elle pr\u00e9vue.<\/p>\n<p>Principales hypoth\u00e8ses\u00a0:<\/p>\n<ul>\n<li>On sait que le couple de rotation et la puissance de la broche sont suffisants.<\/li>\n<li>Le processus est stable (sans broutage).<\/li>\n<\/ul>\n<h3>Force de flexion de l\u2019outil<\/h3>\n<p>La force de flexion de l&rsquo;outil peut \u00e9galement \u00eatre consid\u00e9r\u00e9e comme \u00ab\u00a0force d\u2019avance\u00a0\u00bb, soit la force requise pour pousser la fraise dans la coupe. La force d\u2019avance est un facteur important, car il s\u2019agit de la principale force qui contribue \u00e0 la d\u00e9flexion.<\/p>\n<p>Dans un monde id\u00e9al, la force d\u2019avance doit \u00eatre parfaitement constante. Les pics de force ont tendance \u00e0 causer des probl\u00e8mes, comme des pi\u00e8ces glissant dans le porte-pi\u00e8ces ou des pannes d&rsquo;outils spontan\u00e9es. La force m\u00e9diane a un impact consid\u00e9rable sur le temps de cycle.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-large wp-image-77282\" src=\"https:\/\/mayahtt.com\/wp-content\/uploads\/2024\/01\/tool-bending-force-1024x474.png\" alt=\"Tool bending force cavity milling vs 3d adaptive\" width=\"1024\" height=\"474\" srcset=\"https:\/\/mayahtt.com\/wp-content\/uploads\/2024\/01\/tool-bending-force-980x453.png 980w, https:\/\/mayahtt.com\/wp-content\/uploads\/2024\/01\/tool-bending-force-480x222.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1024px, 100vw\" \/><\/p>\n<h3>\u00c9paisseur de copeaux<\/h3>\n<p>Il existe quelques limites strictes en mati\u00e8re de charge de copeaux. Ind\u00e9pendamment des limitations de puissance et de force, nous devons nous assurer qu&rsquo;il y a suffisament de place dans la goujure pour permettre l\u2019\u00e9vacuation des copeaux.<\/p>\n<p>Pour les trois processus, l\u2019avance par dent dans NX a \u00e9t\u00e9 d\u00e9finie \u00e0 0,0035.\u00a0 La charge de copeaux souhait\u00e9e est de 0,0025 (engagement axial de 15\u00a0%). Il est int\u00e9ressant de noter la diff\u00e9rence entre les diff\u00e9rentes approches\u00a0:<\/p>\n<ul>\n<li>L\u2019usinage de cavit\u00e9 semble obtenir une \u00e9paisseur de copeaux moyenne de 0,0025, avec des pics \u00e0 0,003.<\/li>\n<li>L\u2019\u00e9bauche adaptative 3D fait un excellent travail sur le non-d\u00e9passement de la charge de copeaux souhait\u00e9e.<\/li>\n<li>La charge de copeaux obtenue par l\u2019\u00e9bauche \u00e0 grande vitesse atteint r\u00e9guli\u00e8rement 0,0035.<\/li>\n<\/ul>\n<h2><img decoding=\"async\" class=\"aligncenter size-large wp-image-77284\" src=\"https:\/\/mayahtt.com\/wp-content\/uploads\/2024\/01\/chip-thickness-1024x486.png\" alt=\"Chip thickness\" width=\"1024\" height=\"486\" srcset=\"https:\/\/mayahtt.com\/wp-content\/uploads\/2024\/01\/chip-thickness-980x465.png 980w, https:\/\/mayahtt.com\/wp-content\/uploads\/2024\/01\/chip-thickness-480x228.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1024px, 100vw\" \/><\/h2>\n<h2>Conclusion<\/h2>\n<p>Dans l\u2019ensemble, l\u2019approche adaptative 3D a d\u00e9montr\u00e9 un avantage consid\u00e9rable en mati\u00e8re de stabilit\u00e9 du processus. Nous attendons donc que l\u2019op\u00e9ration fournisse la strat\u00e9gie de fabrication la plus efficace, avec les meilleures possibilit\u00e9s d\u2019optimisation. La limitation efficace de la force d\u2019avance et de l\u2019\u00e9paisseur de copeaux devrait entra\u00eener une augmentation de la dur\u00e9e de vie de l\u2019outil et de la broche.<\/p>\n<p>La stabilit\u00e9 du processus d\u2019\u00e9bauche \u00e0 grande vitesse a \u00e9t\u00e9 l\u00e9g\u00e8rement moindre que celle de l\u2019usinage de cavit\u00e9, mais cette m\u00e9thode a fourni une g\u00e9n\u00e9ration de trajectoire d&rsquo;outils plus rapide et facile. Ce processus est particuli\u00e8rement bien adapt\u00e9 aux pi\u00e8ces uniques, pour lesquelles le temps de programmation est essentiel \u00e0 la rentabilit\u00e9.<\/p>\n<h3>R\u00e9sum\u00e9 des r\u00e9sultats<\/h3>\n<table width=\"623\">\n<tbody>\n<tr>\n<td width=\"84\">M\u00e9thode<\/td>\n<td width=\"180\">Usinage de cavit\u00e9<\/td>\n<td width=\"180\">\u00c9bauche adaptative 3D<\/td>\n<td width=\"180\">\u00c9bauche \u00e0 grande vitesse<\/td>\n<\/tr>\n<tr>\n<td width=\"84\">R\u00e9sum\u00e9<\/p>\n<p>&nbsp;<\/td>\n<td width=\"180\">La trajectoire d\u2019outils traditionnelle est utilis\u00e9e comme r\u00e9f\u00e9rence pour toutes les autres comparaisons.<\/td>\n<td width=\"180\">Introduite avec NX2306, optimise pour fournir des conditions de coupe fluides.<\/p>\n<p>\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 L\u2019\u00e9paisseur des copeaux est strictement respect\u00e9e.<\/p>\n<p>\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Les pics de force sont minimaux.<\/p>\n<p>\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 G\u00e9n\u00e9ralement, peut utiliser des param\u00e8tres de coupe plus agressifs sans sacrifier la stabilit\u00e9 du processus.<\/td>\n<td width=\"180\">Nouvelle trajectoire d&rsquo;outil de la version 2312.<\/p>\n<p>\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 L\u2019\u00e9bauche \u00e0 grande vitesse utilise efficacement les ressources de calcul pour cr\u00e9er rapidement des trajectoires d&rsquo;outils.<\/p>\n<p>\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Particuli\u00e8rement avantageux pour la g\u00e9n\u00e9ration de programmes longs.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>Vous souhaitez explorer la meilleure approche pour vos besoins de fabrication ?<\/p>\n<p><a href=\"https:\/\/mayahtt.com\/fr\/about-maya-htt\/contact\/\">Contactez un expert Maya HTT d\u00e8s aujourd\u2019hui.<\/a><\/p>\n<p><a href=\"https:\/\/mayahtt.com\/fr\/services\/fabrication-service\/\">D\u00e9couvrez nos services pour am\u00e9liorer la productivit\u00e9 dans vos ateliers<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Comparaison des r\u00e9sultats de trois op\u00e9rations 2,5\u00a0axes diff\u00e9rentes Les programmeurs CAM ont pour mission de trouver la meilleure m\u00e9thode de fabrication pour la pi\u00e8ce sp\u00e9cifique qu\u2019ils doivent fabriquer. Souvent, plusieurs op\u00e9rations peuvent accomplir la m\u00eame t\u00e2che. Dans cet article, nous comparons trois op\u00e9rations distinctes et leurs impacts objectifs sur le processus. Quoique l\u2019analyse soit effectu\u00e9e [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":77273,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[559,560,303],"tags":[],"class_list":["post-77532","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles-fr-fr","category-articles-fr-2","category-blogue"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u00c9bauche grande vitesse\/adaptative 3D, usinage cavit\u00e9<\/title>\n<meta name=\"description\" content=\"Trois op\u00e9rations 2,5 axes dans NX CAM | Comparaison : processus d\u2019usinage de cavit\u00e9, d\u2019\u00e9bauche adaptative 3D et nouvelle m\u00e9thode d\u2019\u00e9bauche \u00e0 grande vitesse\" \/>\n<meta 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