{"id":2036,"date":"2023-11-20T10:40:15","date_gmt":"2023-11-20T09:40:15","guid":{"rendered":"https:\/\/transformadosmetalicostoral.com\/?p=2036"},"modified":"2023-11-22T09:56:17","modified_gmt":"2023-11-22T08:56:17","slug":"comment-fonctionnent-les-presses-et-a-quoi-elles-servent","status":"publish","type":"post","link":"https:\/\/transformadosmetalicostoral.com\/fr\/como-funcionan-las-prensas-y-para-que-sirven\/","title":{"rendered":"Comment fonctionnent les presses et \u00e0 quoi servent-elles ?"},"content":{"rendered":"<p>La <strong>presse <\/strong>est un type de <strong><a href=\"https:\/\/transformadosmetalicostoral.com\/fr\/machinerie\/\" target=\"_blank\" rel=\"noreferrer noopener\">machine-outils<\/a><\/strong> largement utilis\u00e9 dans l&#039;industrie <strong>m\u00e9canis\u00e9 <\/strong>et a pour objectif de <strong>changer la forme d&#039;une pi\u00e8ce<\/strong>. Pour y parvenir, la machine utilise <strong>pression<\/strong>. Comment fonctionnent les presses ? Quels types de presses existe-t-il ? Nous vous en parlons dans cet article. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Comment fonctionnent les presses ?<\/h2>\n\n\n\n<p>Il <strong>principe de fonctionnement des presses<\/strong> C&#039;est tr\u00e8s simple : on l&#039;applique <strong>pression <\/strong>pour <strong>transformer <\/strong>une pi\u00e8ce. Cependant, en fonction du <strong>matrice <\/strong>qui est attach\u00e9 \u00e0 la machine, les travaux peuvent \u00eatre ex\u00e9cut\u00e9s simultan\u00e9ment ou non. Dans une presse, il est possible de r\u00e9aliser diff\u00e9rents types d&#039;usinage, comme par exemple donner <strong>forme<\/strong>, <strong>Tamponner<\/strong>, <strong>couper <\/strong>et <strong>faire des trous<\/strong>.<\/p>\n\n\n\n<p>La machine est responsable de <strong>appuyez sur la matrice <\/strong>contre le mat\u00e9riau \u00e0 travailler, \u00e0 travers un <strong>mouvement de rotation<\/strong> qui peut \u00eatre totale ou partielle. La force g\u00e9n\u00e9r\u00e9e par la presse varie en fonction de la <strong>trajectoire <\/strong>qui d\u00e9pend en m\u00eame temps de <strong>angle d&#039;application de ladite force<\/strong>. <\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"666\" src=\"https:\/\/transformadosmetalicostoral.com\/wp-content\/uploads\/2023\/11\/prensas.jpg\" alt=\"Comment fonctionnent les presses et quels types de machines existe-t-il ?\" class=\"wp-image-2045\" srcset=\"https:\/\/transformadosmetalicostoral.com\/wp-content\/uploads\/2023\/11\/prensas.jpg 1000w, https:\/\/transformadosmetalicostoral.com\/wp-content\/uploads\/2023\/11\/prensas-300x200.jpg 300w, https:\/\/transformadosmetalicostoral.com\/wp-content\/uploads\/2023\/11\/prensas-768x511.jpg 768w, https:\/\/transformadosmetalicostoral.com\/wp-content\/uploads\/2023\/11\/prensas-18x12.jpg 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<p>En plus de savoir <strong>comment fonctionnent les presses<\/strong>, il est important de souligner que ces machines sont capables de produire<strong> de grandes quantit\u00e9s d&#039;\u00e9nergie<\/strong>, mais toujours de mani\u00e8re contr\u00f4l\u00e9e et ils acceptent des mat\u00e9riaux tels que <strong>acier, bronze, fer, aluminium <\/strong>et <strong>cuivre<\/strong>. <\/p>\n\n\n\n<p>En revanche, les presses peuvent <strong>qualifier <\/strong>en fonction du m\u00e9canisme d&#039;entra\u00eenement, de la fonction, de la structure ou de la contr\u00f4labilit\u00e9. Aujourd&#039;hui, nous allons nous concentrer sur <strong>deux des types de presses les plus courants<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Types de presses par leur m\u00e9canisme d&#039;entra\u00eenement<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Presses m\u00e9caniques<\/h3>\n\n\n\n<p>Le <strong>presses m\u00e9caniques<\/strong> sont utilis\u00e9s lorsque cela est n\u00e9cessaire <strong>d\u00e9former les pi\u00e8ces<\/strong> en utilisant une grande pression. Ce sont les plus <strong>conventionnel <\/strong>et aussi tr\u00e8s polyvalent. Ils sont utilis\u00e9s dans les industries automobile et a\u00e9ronautique pour fabriquer des pi\u00e8ces pour voitures et avions. Vous pouvez \u00e9galement les retrouver dans <strong>des usines <\/strong>o\u00f9 sont produits les ustensiles de cuisine et dans le <strong>industrie m\u00e9tallurgique<\/strong>.<\/p>\n\n\n\n<p>La <strong>force utilis\u00e9e<\/strong> par la presse m\u00e9canique varie selon la <strong>ordre de grandeur<\/strong>, la <strong>vitesse <\/strong>et la <strong>distance <\/strong>d&#039;un coup. Comment fonctionnent les presses m\u00e9caniques ? Il s&#039;agit d&#039;un processus similaire \u00e0 celui de <strong>frapper un clou avec un marteau<\/strong>, dans lequel le marteau accumule de l&#039;\u00e9nergie \u00e0 partir du moment o\u00f9 il acc\u00e9l\u00e8re pour se suspendre dans l&#039;air jusqu&#039;\u00e0 ce qu&#039;il entre en collision avec la t\u00eate du clou. A ce moment, l&#039;outil lib\u00e8re une force sup\u00e9rieure \u00e0 la force initiale.<\/p>\n\n\n\n<p>Le<strong> presses m\u00e9caniques<\/strong> Ils ont un <strong>moteur \u00e9lectrique<\/strong> qui fait tourner un <strong>volant <\/strong>dans lequel l&#039;\u00e9nergie s&#039;accumule et transforme le mouvement de circulaire en lin\u00e9aire. Le moteur est \u00e9galement charg\u00e9 de lib\u00e9rer l&#039;\u00e9nergie stock\u00e9e pour appliquer une <strong>force \u00e9quivalente \u00e0 plusieurs tonnes<\/strong>. Dans les presses m\u00e9caniques, il est possible <strong>couper, d\u00e9former, forger, estamper<\/strong> et <strong>truc<\/strong>. <\/p>\n\n\n\n<p>Les <strong>deux types de presses m\u00e9caniques<\/strong> les plus courants sont :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>manivelle<\/strong>. Il utilise une bielle plac\u00e9e sur un vilebrequin et poss\u00e8de un volant sup\u00e9rieur qui se d\u00e9place gr\u00e2ce au moteur \u00e9lectrique. La presse \u00e0 manivelle est utilis\u00e9e pour le travail de <strong>perforation <\/strong>et <strong>\u00e9bavur\u00e9<\/strong>.<\/li>\n\n\n\n<li><strong>presse \u00e0 vis<\/strong>. Il utilise l&#039;\u00e9nergie de rotation obtenue pour entra\u00eener un <strong>vis <\/strong>de grande taille. <\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Comment fonctionnent les presses hydrauliques ?<\/h3>\n\n\n\n<p>La <strong>presse hydraulique<\/strong> Il se distingue par sa capacit\u00e9 \u00e0 effectuer des travaux qui n\u00e9cessitent une grande d\u00e9monstration de force. Ce type de machine est utilis\u00e9 pour <a href=\"https:\/\/transformadosmetalicostoral.com\/fr\/cintreuses-de-toles\/\" target=\"_blank\" rel=\"noreferrer noopener\">pli<\/a> ou redresser des pi\u00e8ces, mais aussi pour <strong>Presse<\/strong> afin de changer la forme finale d&#039;un mat\u00e9riau.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/transformadosmetalicostoral.com\/wp-content\/uploads\/2023\/11\/prensadora.jpg\" alt=\"Les presses sont des machines-outils qui d\u00e9forment une pi\u00e8ce\" class=\"wp-image-2046\" srcset=\"https:\/\/transformadosmetalicostoral.com\/wp-content\/uploads\/2023\/11\/prensadora.jpg 1000w, https:\/\/transformadosmetalicostoral.com\/wp-content\/uploads\/2023\/11\/prensadora-300x200.jpg 300w, https:\/\/transformadosmetalicostoral.com\/wp-content\/uploads\/2023\/11\/prensadora-768x512.jpg 768w, https:\/\/transformadosmetalicostoral.com\/wp-content\/uploads\/2023\/11\/prensadora-18x12.jpg 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<p>Curieusement, le <strong>presse hydraulique<\/strong> fonctionne selon <strong>principe de la loi de Pascal<\/strong>. D\u2019apr\u00e8s cet axiome, nous utilisons un <strong>Unit\u00e9 hydraulique<\/strong> qui fonctionne avec un <strong>basse pression<\/strong> au d\u00e9but. Celui-ci est multipli\u00e9 gr\u00e2ce au <strong>fluides <\/strong>qui g\u00e9n\u00e8rent beaucoup plus de pression \u00e0 travers un <strong>piston<\/strong>. La pression g\u00e9n\u00e9r\u00e9e dans les pistons est utilis\u00e9e comme <strong>pouvoir <\/strong>pour effectuer des travaux qui demandent beaucoup de force. <\/p>\n\n\n\n<p>De par ses caract\u00e9ristiques, le <strong>presses hydrauliques<\/strong> Ils peuvent \u00eatre motoris\u00e9s, manuels, de table, debout et industriels. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Presse m\u00e9canique ou hydraulique : laquelle choisir ?<\/h2>\n\n\n\n<p>Si vous recherchez un <strong>presse pour votre atelier<\/strong>Quel type de machine-outil vous convient le mieux ? Nous commen\u00e7ons par vous dire que le <strong>presses m\u00e9caniques<\/strong> Ils ont une longueur de course fixe et sont capables d&#039;effectuer <strong>mouvements de d\u00e9filement sp\u00e9ciaux<\/strong>. De plus, toutes les pi\u00e8ces de la machine, y compris le volant, sont reli\u00e9es entre elles. <\/p>\n\n\n\n<p>Dans ce type de machines, le <strong>vitesse de d\u00e9placement <\/strong>est variable, tandis que l&#039;\u00e9nergie change en fonction de la <strong>vitesse du volant<\/strong> et la p\u00e2te. Le grand avantage de la presse m\u00e9canique est qu&#039;elle est assez \u00e9conomique et tr\u00e8s simple \u00e0 configurer, en plus d&#039;\u00eatre <strong>rapide et productif<\/strong>. L&#039;inconv\u00e9nient est qu&#039;il a une faible pression et que son fonctionnement doit \u00eatre laiss\u00e9 entre les mains d&#039;un <strong>op\u00e9rateur expert<\/strong>. De par ses caract\u00e9ristiques, c&#039;est la meilleure machine pour <strong>usinage de petites pi\u00e8ces<\/strong>.<\/p>\n\n\n\n<p>Les presses hydrauliques fonctionnent gr\u00e2ce \u00e0 <strong>cylindres <\/strong>qui a besoin d&#039;un <strong>courant<\/strong>, comme lui <strong>huile<\/strong>, pour travailler. Dans la presse hydraulique, le mouvement des pi\u00e8ces peut <strong>contr\u00f4le-toi <\/strong>mieux, ce qui en fait une excellente alternative pour le <strong>usinage de pi\u00e8ces complexes<\/strong>. La longueur de course des presses hydrauliques est <strong>variable<\/strong>, comme le <strong>vitesse de glissement<\/strong>. En revanche, c&#039;est une machine tr\u00e8s pr\u00e9cise et tr\u00e8s performante. C&#039;est la presse la plus adapt\u00e9e si vous avez besoin<strong> grande vitesse <\/strong>de production. <\/p>","protected":false},"excerpt":{"rendered":"<p>Comment fonctionnent les presses ? Ces machines-outils sont capables d&#039;usiner en exer\u00e7ant une forte pression<\/p>","protected":false},"author":7,"featured_media":2047,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[91,86,94,77],"class_list":["post-2036","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","tag-maquinas-herramienta","tag-mecanizados","tag-prensas","tag-transformados-metalicos"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u00bfC\u00f3mo funcionan las prensas y para qu\u00e9 sirven?<\/title>\n<meta name=\"description\" content=\"\u00bfC\u00f3mo funcionan las prensas? 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