[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.dj33.cz\/elektroerozivni-obrabeni\/#Article","mainEntityOfPage":"https:\/\/www.dj33.cz\/elektroerozivni-obrabeni\/","headline":"Elektroerozivn\u00ed obr\u00e1b\u011bn\u00ed","name":"Elektroerozivn\u00ed obr\u00e1b\u011bn\u00ed","description":"Elektroerozivn\u00ed obr\u00e1b\u011bn\u00ed, z anglick\u00e9ho spojen\u00ed „Electric Discharge Machining“ – neboli metoda EDM, se vyzna\u010duje odeb\u00edr\u00e1n\u00edm materi\u00e1lu drobn\u00fdmi elektrick\u00fdmi v\u00fdboji. Ty prob\u00edhaj\u00ed mezi elektricky vodiv\u00fdm obr\u00e1b\u011bn\u00fdm kusem a elektrodou, kter\u00e1 je v tomto p\u0159\u00edpad\u011b takov\u00fdm obr\u00e1b\u011bc\u00edm n\u00e1strojem. Prost\u0159ed\u00edm je kapaln\u00e9 dielektrikum, kter\u00fdm m\u016f\u017ee b\u00fdt nap\u0159\u00edklad voda, miner\u00e1ln\u00ed olej nebo petrolej. Elektroda je obvykle zapojena k z\u00e1porn\u00e9mu p\u00f3lu a k obrobku...","datePublished":"2019-10-14","dateModified":"2023-05-15","author":{"@type":"Person","@id":"https:\/\/www.dj33.cz\/author\/#Person","name":"","url":"https:\/\/www.dj33.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/9d25b0af9840660883a67790aa4f595ddc226aa4680c4cf7bc03a25c14fcef85?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/9d25b0af9840660883a67790aa4f595ddc226aa4680c4cf7bc03a25c14fcef85?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"dj33.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.dj33.cz\/wp-content\/uploads\/img_a357048_w3875_t1571729991.jpg","url":"https:\/\/www.dj33.cz\/wp-content\/uploads\/img_a357048_w3875_t1571729991.jpg","height":0,"width":0},"url":"https:\/\/www.dj33.cz\/elektroerozivni-obrabeni\/","about":["Elektro"],"wordCount":398,"articleBody":"Elektroerozivn\u00ed obr\u00e1b\u011bn\u00ed, z anglick\u00e9ho spojen\u00ed „Electric Discharge Machining“ – neboli metoda EDM, se vyzna\u010duje odeb\u00edr\u00e1n\u00edm materi\u00e1lu drobn\u00fdmi elektrick\u00fdmi v\u00fdboji. Ty prob\u00edhaj\u00ed mezi elektricky vodiv\u00fdm obr\u00e1b\u011bn\u00fdm kusem a elektrodou, kter\u00e1 je v tomto p\u0159\u00edpad\u011b takov\u00fdm obr\u00e1b\u011bc\u00edm n\u00e1strojem. Prost\u0159ed\u00edm je kapaln\u00e9 dielektrikum, kter\u00fdm m\u016f\u017ee b\u00fdt nap\u0159\u00edklad voda, miner\u00e1ln\u00ed olej nebo petrolej.Elektroda je obvykle zapojena k z\u00e1porn\u00e9mu p\u00f3lu a k obrobku se pomalu p\u0159ibli\u017euje, ale nedot\u00fdk\u00e1 se ho. Kdy\u017e vrstvou dielektrika projde v\u00fdboj, na povrchu obr\u00e1b\u011bn\u00e9ho d\u00edlu se objev\u00ed kr\u00e1ter o mal\u00e9 velikosti. Je nutn\u00e1 neust\u00e1l\u00e1 obm\u011bna dielektrika kv\u016fli dostate\u010dn\u00e9mu odplavov\u00e1n\u00ed spalin.D\u00edky t\u00e9to metod\u011b odpad\u00e1 p\u016fsoben\u00ed mechanick\u00fdch sil mezi n\u00e1strojem a obrobkem, kter\u00e9 jsou zn\u00e1my z konven\u010dn\u00edch metod obr\u00e1b\u011bn\u00ed. Tento druh opracov\u00e1v\u00e1n\u00ed je proto vhodn\u00fd i pro velmi tvrd\u00e9 materi\u00e1ly a slo\u017eit\u00e9 tvary. Vysokou p\u0159esnost a kvalitu povrchu, je\u017e se vyrovn\u00e1vaj\u00ed brou\u0161en\u00ed, umoc\u0148uje mo\u017en\u00e1 velmi dobr\u00e1 kombinovatelnost s \u0159\u00edzen\u00edm pomoc\u00ed po\u010d\u00edta\u010de.Rychlost \u00fab\u011bru materi\u00e1lu, kvalitu a p\u0159esnost povrchu je mo\u017en\u00e9 regulovat pomoc\u00ed r\u016fzn\u00e9ho nastavov\u00e1n\u00ed parametr\u016f proudu a frekvence. Sou\u010dasn\u00e9 stroje zvl\u00e1dnou pracovat s proudy o des\u00edtk\u00e1ch a\u017e stovk\u00e1ch amp\u00e9r a frekvencemi v des\u00edtk\u00e1ch kilohertz\u016f, tak\u017ee se vyzna\u010duj\u00ed velkou spot\u0159ebou energie. Lze s nimi v\u0161ak nejen obr\u00e1b\u011bt, ale i hloubit \u010di \u0159ezat.\tKde a kdy se vlastn\u011b tato metoda vzala?Drobn\u00e9 kr\u00e1tery na materi\u00e1lu vznikl\u00e9 p\u016fsoben\u00edm elektrick\u00e9ho v\u00fdboje byly zkoum\u00e1ny ji\u017e ve druh\u00e9 polovin\u011b 18. stolet\u00ed. Je to p\u0159ipisov\u00e1no anglick\u00e9mu fyzikovi Josephu Priestleymu. Nicm\u00e9n\u011b funk\u010dn\u00ed model stroje pro tento druh obr\u00e1b\u011bn\u00ed, z\u00e1sluhou rusk\u00fdch vyn\u00e1lezc\u016f Lazarenkov\u00fdch, a prvn\u00ed komer\u010dn\u00ed stroj, d\u00edky \u0161v\u00fdcarsk\u00e9 firm\u011b Charmilles, byly vyrobeny a\u017e v polovin\u011b stolet\u00ed 20. Tento stroj se na konci 60. let do\u010dkal i \u010d\u00edslicov\u00e9ho \u0159\u00edzen\u00ed, kter\u00e9 je\u0161t\u011b v\u00edce zp\u0159esnilo a zlep\u0161ilo proces obr\u00e1b\u011bn\u00ed materi\u00e1l\u016f.                                                                                                                                                                                                                                                                                                                                                                                        4.1\/5 - (8 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Elektroerozivn\u00ed obr\u00e1b\u011bn\u00ed","item":"https:\/\/www.dj33.cz\/elektroerozivni-obrabeni\/#breadcrumbitem"}]}]