\u2460 La surface de la pi\u00e8ce usin\u00e9e lors de la rectification int\u00e9rieure est br\u00fbl\u00e9e. En raison d'une mauvaise dissipation de la chaleur et d'une vitesse d'avance \u00e9lev\u00e9e, la chaleur g\u00e9n\u00e9r\u00e9e lors de la rectification est importante, ce qui provoque des br\u00fblures \u00e0 haute temp\u00e9rature sur la surface usin\u00e9e. Pour rem\u00e9dier \u00e0 ce ph\u00e9nom\u00e8ne, il est n\u00e9cessaire, lors de la rectification int\u00e9rieure, d'utiliser une quantit\u00e9 suffisante de fluide de rectification et de r\u00e9duire la vitesse d'avance. Il convient de choisir une meule auto-aff\u00fbtante adapt\u00e9e \u00e0 la rectification int\u00e9rieure, ainsi qu'une meule \u00e0 grain tendre ou grossier, et de l'aff\u00fbter r\u00e9guli\u00e8rement. En effet, une meule encrass\u00e9e et \u00e9mouss\u00e9e contribue \u00e0 l'\u00e9l\u00e9vation de la temp\u00e9rature de surface de la pi\u00e8ce.<\/p>\n\n\n\n
\u2461 La surface de la pi\u00e8ce usin\u00e9e par la rectifieuse int\u00e9rieure pr\u00e9sente des marques de vibration et une rugosit\u00e9 importante. La faible vitesse p\u00e9riph\u00e9rique de la meule, ou son encrassement, contribuent \u00e0 cette rugosit\u00e9. Il est donc conseill\u00e9 de r\u00e9duire les avances axiale et radiale afin d'am\u00e9liorer la vitesse p\u00e9riph\u00e9rique de la meule. Par ailleurs, le faible diam\u00e8tre de la meule, le jeu excessif de la broche, le d\u00e9faut de circularit\u00e9 de la meule, la flexion de la broche, etc., peuvent engendrer de fortes vibrations. Ces vibrations provoquent des ondulations et, par cons\u00e9quent, des marques de vibration sur la surface de la pi\u00e8ce. Dans ce cas, il est recommand\u00e9 d'utiliser une meule de plus grand diam\u00e8tre. Un dressage ad\u00e9quat de la meule et un r\u00e9glage pr\u00e9cis du jeu des paliers permettent de r\u00e9duire les vibrations.<\/p>\n\n\n\n
2. Diff\u00e9rence de rondeur interne de la pi\u00e8ce<\/strong><\/p>\n\n\n\n Lors du rectifiage d'une rectifieuse int\u00e9rieure, un serrage excessif de la pi\u00e8ce peut entra\u00eener une d\u00e9formation de l'al\u00e9sage lors du desserrage. Un serrage excessif peut \u00e9galement r\u00e9duire la pression de serrage exerc\u00e9e sur la pi\u00e8ce. Un d\u00e9s\u00e9quilibre de la pi\u00e8ce peut engendrer un d\u00e9faut de circularit\u00e9. Ce d\u00e9faut de circularit\u00e9, fr\u00e9quent dans les al\u00e9sages rectifi\u00e9s, se manifeste principalement sous forme d'ellipses ou de polygones. L'ovalisation est due \u00e0 un faux-rond radial trop important de la broche de la poup\u00e9e fixe, associ\u00e9 \u00e0 un serrage insuffisant de la pi\u00e8ce ou \u00e0 un jeu excessif du mandrin. La forme polygonale est caus\u00e9e par une usure excessive de la broche de la poup\u00e9e fixe, provoquant un jeu important. L'usure des paliers de la broche de la t\u00eate de rectification peut \u00e9galement \u00eatre \u00e0 l'origine de ce type de d\u00e9formation. Dans ce cas, une r\u00e9vision de la machine-outil est n\u00e9cessaire\u00a0: le mandrin et la pi\u00e8ce doivent \u00eatre resserr\u00e9s et le jeu des paliers ajust\u00e9 afin de corriger le d\u00e9faut de circularit\u00e9.<\/p>\n\n\n\n The internal grinder is used to grind the workpieces with conical, cylindrical or internal thread surface and internal holes. It is mainly used to grind the internal holes and end faces of basin teeth and large bearing rings, so it can ensure the accuracy of internal holes and end faces. Nowadays, internal grinder is widely […]<\/p>\n","protected":false},"author":1,"featured_media":192,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"","ast-disable-related-posts":"","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-191","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/aurora-machine.com\/fr\/wp-json\/wp\/v2\/posts\/191","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=191"}],"version-history":[{"count":0,"href":"https:\/\/aurora-machine.com\/fr\/wp-json\/wp\/v2\/posts\/191\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aurora-machine.com\/fr\/wp-json\/wp\/v2\/media\/192"}],"wp:attachment":[{"href":"https:\/\/aurora-machine.com\/fr\/wp-json\/wp\/v2\/media?parent=191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aurora-machine.com\/fr\/wp-json\/wp\/v2\/categories?post=191"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aurora-machine.com\/fr\/wp-json\/wp\/v2\/tags?post=191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"\"](\"https:\/\/www.antsmachine.com\/wp-content\/uploads\/2022\/11\/1103173242.jpg\")
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