{"id":186,"date":"2023-06-08T19:14:12","date_gmt":"2023-06-08T19:14:12","guid":{"rendered":"https:\/\/jc08.geewp.com\/?p=186"},"modified":"2023-06-08T19:14:12","modified_gmt":"2023-06-08T19:14:12","slug":"reasons-for-machining-accuracy-error-of-machining-center","status":"publish","type":"post","link":"https:\/\/aurora-machine.com\/fr\/reasons-for-machining-accuracy-error-of-machining-center\/","title":{"rendered":"Causes des erreurs de pr\u00e9cision d&#039;usinage du centre d&#039;usinage"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong>1. Mauvaise pr\u00e9cision d&#039;usinage des pi\u00e8ces du centre d&#039;usinage<\/strong><br>G\u00e9n\u00e9ralement, la dynamique d&#039;avance entre les axes n&#039;est pas correctement ajust\u00e9e suite \u00e0 des erreurs d&#039;installation et de r\u00e9glage, ou bien les cha\u00eenes de transmission des axes de la machine-outil ont subi des modifications dues \u00e0 l&#039;usure (par exemple, modification du jeu de la vis-m\u00e8re, erreur de pas, d\u00e9calage axial, etc.). Ce probl\u00e8me peut \u00eatre r\u00e9solu en r\u00e9ajustant la compensation du jeu. Si l&#039;erreur de suivi dynamique est trop importante et qu&#039;une alarme se d\u00e9clenche, v\u00e9rifiez que la vitesse du servomoteur n&#039;est pas excessive. V\u00e9rifiez le bon fonctionnement de l&#039;\u00e9l\u00e9ment de d\u00e9tection de position. V\u00e9rifiez le bon contact du connecteur du c\u00e2ble de retour de position. V\u00e9rifiez l&#039;\u00e9tat du verrou de sortie analogique et du potentiom\u00e8tre de gain correspondants. V\u00e9rifiez le fonctionnement normal du servomoteur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. Pr\u00e9cision d&#039;usinage m\u00e9diocre due au d\u00e9passement du centre d&#039;usinage CNC<\/strong><br>Le temps d&#039;acc\u00e9l\u00e9ration et de d\u00e9c\u00e9l\u00e9ration \u00e9tant peut-\u00eatre trop court, il convient d&#039;allonger en cons\u00e9quence le temps de changement de vitesse\u00a0; il se peut \u00e9galement que la liaison entre le servomoteur et la vis-m\u00e8re soit l\u00e2che ou que la rigidit\u00e9 soit insuffisante, auquel cas le gain de la bague de position peut \u00eatre r\u00e9duit en cons\u00e9quence.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. D\u00e9faut de circularit\u00e9 lors de l&#039;assemblage de deux arbres<\/strong><br>1. D\u00e9formation axiale du cercle<br>Cette d\u00e9formation peut \u00eatre due \u00e0 un d\u00e9faut de r\u00e9glage m\u00e9canique. Un positionnement impr\u00e9cis de l&#039;arbre ou une compensation inad\u00e9quate du jeu de la vis-m\u00e8re entra\u00eeneront un d\u00e9faut de circularit\u00e9 lorsque la limite d&#039;image sera d\u00e9pass\u00e9e.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. Erreur d&#039;ellipse oblique (ellipse dans la direction \u00e0 45 degr\u00e9s)<\/strong><br>Commencez par v\u00e9rifier la valeur de d\u00e9viation de position de chaque axe. Si la d\u00e9viation est trop importante, ajustez le gain de la boucle de position pour la corriger. V\u00e9rifiez ensuite le bon r\u00e9glage de la carte d&#039;interface du pilote rotatif ou de l&#039;inductosyn, ainsi que le jeu de la transmission m\u00e9canique\u00a0: si celui-ci est trop important, la compensation de jeu est appropri\u00e9e.<br>Choix de l&#039;\u00e9quipement\u00a0: La pr\u00e9cision d&#039;usinage est \u00e9troitement li\u00e9e \u00e0 la machine-outil choisie. ANTISHICNC fabrique diff\u00e9rents types de machines-outils \u00e0 commande num\u00e9rique (CNC), notamment des centres d&#039;usinage pour le sciage, le tournage, le fraisage, la rectification, le per\u00e7age, le rainurage et le formage, ainsi que des machines d&#039;\u00e9lectro\u00e9rosion (EDM). Gr\u00e2ce \u00e0 une technologie CNC de pointe, un moteur de haute pr\u00e9cision et une conception rigoureuse, ces machines offrent une grande pr\u00e9cision d&#039;usinage et une longue dur\u00e9e de vie. Les machines-outils ANTISHICNC se distinguent par une large gamme de mod\u00e8les et un excellent rapport qualit\u00e9-prix\u00a0; elles sont commercialis\u00e9es dans de nombreux pays.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.antsmachine.com\/wp-content\/uploads\/2022\/11\/20221107172509.jpg\" alt=\"\" class=\"wp-image-8796\"\/><\/figure>","protected":false},"excerpt":{"rendered":"<p>1. Pr\u00e9cision d&#039;usinage insuffisante des pi\u00e8ces des centres d&#039;usinage. G\u00e9n\u00e9ralement, la dynamique d&#039;avance entre les axes n&#039;est pas correctement r\u00e9gl\u00e9e en raison d&#039;erreurs lors de l&#039;installation et du r\u00e9glage, ou les cha\u00eenes de transmission des axes de la machine-outil se sont alt\u00e9r\u00e9es avec le temps (par exemple, modification du jeu de la vis-m\u00e8re, erreur de pas, d\u00e9calage axial, etc.). Cela peut \u00eatre d\u00fb \u00e0 [\u2026]<\/p>","protected":false},"author":1,"featured_media":184,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[23],"tags":[],"class_list":["post-186","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/aurora-machine.com\/fr\/wp-json\/wp\/v2\/posts\/186","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aurora-machine.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aurora-machine.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aurora-machine.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aurora-machine.com\/fr\/wp-json\/wp\/v2\/comments?post=186"}],"version-history":[{"count":0,"href":"https:\/\/aurora-machine.com\/fr\/wp-json\/wp\/v2\/posts\/186\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aurora-machine.com\/fr\/wp-json\/wp\/v2\/media\/184"}],"wp:attachment":[{"href":"https:\/\/aurora-machine.com\/fr\/wp-json\/wp\/v2\/media?parent=186"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aurora-machine.com\/fr\/wp-json\/wp\/v2\/categories?post=186"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aurora-machine.com\/fr\/wp-json\/wp\/v2\/tags?post=186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}