{"id":17865,"date":"2025-04-03T23:54:31","date_gmt":"2025-04-03T15:54:31","guid":{"rendered":"https:\/\/moldiecasting.com\/?p=17865"},"modified":"2026-10-08T21:05:15","modified_gmt":"2026-10-08T13:05:15","slug":"types-of-edm-machining","status":"publish","type":"post","link":"https:\/\/moldiecasting.com\/sk\/blog\/types-of-edm-machining\/","title":{"rendered":"Typy elektroeroz\u00edvneho obr\u00e1bania (EDM): sprievodca"},"content":{"rendered":"<p>Vo v\u00fdrobe sa \u010dasto vyskytuj\u00fa s\u00fa\u010diastky, ktor\u00e9 s\u00fa pr\u00edli\u0161 tvrd\u00e9, tenk\u00e9 alebo zlo\u017eit\u00e9 na be\u017en\u00e9 obr\u00e1banie. Vtedy sa uplat\u0148uje elektroeroz\u00edvne obr\u00e1banie (EDM). Namiesto mechanickej sily odober\u00e1 materi\u00e1l riaden\u00fdmi elektrick\u00fdmi v\u00fdbojmi a dosahuje \u00fazke tolerancie pri n\u00e1strojov\u00fdch oceliach, karbidoch, tit\u00e1ne a \u010fal\u0161\u00edch \u0161peci\u00e1lnych zliatin\u00e1ch.<\/p>\n<p>Elektroeroz\u00edvne obr\u00e1banie sa pod\u013ea met\u00f3dy del\u00ed na viacero typov; naj\u010dastej\u0161ie s\u00fa dr\u00f4tov\u00e9 EDM, h\u013abiace EDM a EDM v\u0155tanie otvorov.<\/p>\n<h2>Dr\u00f4tov\u00e9 EDM (WEDM)<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1334\" src=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/4.jpg\" alt=\"Dr\u00f4tov\u00e9 elektroeroz\u00edvne obr\u00e1banie\" width=\"800\" height=\"450\" srcset=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/4.jpg 800w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/4-300x169.jpg 300w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/4-768x432.jpg 768w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/4-18x10.jpg 18w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/4-600x338.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<h3>Princ\u00edp fungovania a nastavenie<\/h3>\n<p>Dr\u00f4tov\u00e9 EDM vyu\u017e\u00edva nepretr\u017eite pos\u00favan\u00fd elektricky nabit\u00fd dr\u00f4t napnut\u00fd medzi vodi\u010dmi, zvy\u010dajne mosadzn\u00fd alebo povlakovan\u00fd mosadzn\u00fd, ako pohybliv\u00fa elektr\u00f3du. Dr\u00f4t sa obrobku nedot\u00fdka. CNC syst\u00e9m ho vedie naprogramovanou dr\u00e1hou pri zachovan\u00ed riadenej medzery. Obrobok je ponoren\u00fd v deionizovanej vode, ktor\u00e1 sl\u00fa\u017ei ako dielektrikum a odplavuje ne\u010distoty. Horn\u00e9 a doln\u00e9 vodiace prvky umo\u017e\u0148uj\u00fa nakl\u00e1\u0148a\u0165 dr\u00f4t a vytv\u00e1ra\u0165 skosen\u00e9 prvky.<\/p>\n<p>Gener\u00e1tor moduluje energiu, trvanie a frekvenciu impulzov pri hrubovan\u00ed aj viacer\u00fdch dokon\u010dovac\u00edch priechodoch. Hrubovanie uprednost\u0148uje r\u00fdchlos\u0165 a ponech\u00e1va pr\u00eddavok na n\u00e1sledn\u00e9 priechody, ktor\u00e9 doladia tolerancie a povrch. D\u00f4le\u017eit\u00e9 je aj upnutie: pevn\u00e9, tepelne stabiln\u00e9 nastavenie, presn\u00e9 z\u00e1kladne a dobr\u00e9 odplavovanie priamo ovplyv\u0148uj\u00fa presnos\u0165 a priepustnos\u0165.<\/p>\n<h3>Typick\u00e9 pou\u017eitie a materi\u00e1ly<\/h3>\n<p>Dr\u00f4tov\u00e9 EDM sa be\u017ene pou\u017e\u00edva na zlo\u017eit\u00e9 profily: formy, razn\u00edky, ozuben\u00e9 koles\u00e1, dr\u00e1\u017ekovan\u00e9 tvary, zdravotn\u00edcke komponenty a 2.5D obrysy, ktor\u00e9 sa \u0165a\u017eko alebo v\u00f4bec nedaj\u00fa fr\u00e9zova\u0165. Vynik\u00e1 pri kalen\u00fdch n\u00e1strojov\u00fdch oceliach (A2, D2, H13), karbide volfr\u00e1mu, tit\u00e1ne, Inconeli a \u010fal\u0161\u00edch superslitin\u00e1ch. \u010casto sa pou\u017e\u00edva na vyrez\u00e1vanie <span style=\"color: #3366ff;\"><a style=\"color: #3366ff;\" href=\"https:\/\/moldiecasting.com\/sk\/die-casting-dies\/\">foriem na tlakov\u00e9 liatie<\/a><\/span>\u00a0z bloku, v\u00fdrobu presn\u00fdch vlo\u017eiek, rezanie krehk\u00fdch alebo kalen\u00fdch s\u00fa\u010diastok bez vn\u00fatorn\u00e9ho nap\u00e4tia a vytv\u00e1ranie tenk\u00fdch p\u00e1sov \u010di jemn\u00fdch prvkov bez deform\u00e1cie.<\/p>\n<h3>V\u00fdhody a obmedzenia<\/h3>\n<ul>\n<li><strong>Presnos\u0165 a kvalita povrchu<\/strong>: Pri stabilnom nastaven\u00ed s\u00fa be\u017en\u00e9 tolerancie \u00b10.0001\u20130.0002&#8243;; viacn\u00e1sobn\u00fdmi dokon\u010dovac\u00edmi priechodmi mo\u017eno dosiahnu\u0165 drsnos\u0165 povrchu pod 1 \u03bcm Ra.<\/li>\n<li><strong>Minim\u00e1lne mechanick\u00e9 nap\u00e4tie<\/strong>: Bez rezn\u00fdch s\u00edl zost\u00e1vaj\u00fa tenk\u00e9 steny a jemn\u00e9 detaily neporu\u0161en\u00e9. Tepelne ovplyvnen\u00e1 oblas\u0165 je mal\u00e1 a pretaven\u00e1 vrstva tenk\u00e1.<\/li>\n<li><strong>Vhodn\u00e9 na automatiz\u00e1ciu<\/strong>: Automatick\u00e9 navliekanie dr\u00f4tu, obnovenie po jeho pretrhnut\u00ed a integrovan\u00e9 meranie podporuj\u00fa spo\u013eahliv\u00fa bezobslu\u017en\u00fa prev\u00e1dzku, najm\u00e4 pri dlh\u00fdch profiloch.<\/li>\n<\/ul>\n<p><strong>Obmedzenia<\/strong>: Dr\u00f4t mus\u00ed ma\u0165 pr\u00edstup k obrysu, preto nemo\u017eno obr\u00e1ba\u0165 podrezania ani uzavret\u00e9 dutiny. Ak sa za\u010diatok rezu nenach\u00e1dza na hrane, treba vstupn\u00fd otvor. Pri vysok\u00fdch s\u00fa\u010diastkach m\u00f4\u017ee by\u0165 potrebn\u00e9 d\u00f4kladne navrhn\u00fa\u0165 odplavovanie, aby sa zachovala stabilita a obmedzila er\u00f3zia \u010di pretrhnutie dr\u00f4tu.<\/p>\n<h2>H\u013abiace EDM (ponorn\u00e9\/konven\u010dn\u00e9 EDM)<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1335\" src=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/5.jpg\" alt=\"H\u013abenie elektroer\u00f3ziou\" width=\"800\" height=\"450\" srcset=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/5.jpg 800w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/5-300x169.jpg 300w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/5-768x432.jpg 768w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/5-18x10.jpg 18w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/5-600x338.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<h3>Elektr\u00f3dy, n\u00e1stroje a tvorba dut\u00edn<\/h3>\n<p>H\u013abiace EDM, zn\u00e1me aj ako ponorn\u00e9 obr\u00e1banie, pou\u017e\u00edva tvarovan\u00fa elektr\u00f3du, zvy\u010dajne grafitov\u00fa alebo meden\u00fa, upevnen\u00fa na pieste. Elektr\u00f3da sa umiestni oproti negat\u00edvnemu tvaru dutiny a pod riaden\u00edm servosyst\u00e9mu sa pon\u00e1ra do obrobku; iskrov\u00e9 v\u00fdboje pritom odoberaj\u00fa materi\u00e1l. Be\u017en\u00fdm dielektrikom je olej na b\u00e1ze uh\u013eovod\u00edkov. Orbit\u00e1lny pohyb (mal\u00e9 naprogramovan\u00e9 kruhov\u00e9 alebo vektorov\u00e9 pohyby) zlep\u0161uje odplavovanie ne\u010dist\u00f4t a kvalitu povrchu a zabezpe\u010duje kone\u010dn\u00e9 rozmery bez nadmern\u00e9ho op\u00e1lenia rohov.<\/p>\n<p>V\u00fdber elektr\u00f3dy m\u00e1 ve\u013ek\u00fd v\u00fdznam: grafit umo\u017e\u0148uje r\u00fdchlej\u0161\u00ed \u00faber, odol\u00e1va teplu a hod\u00ed sa pre v\u00e4\u010d\u0161ie dutiny; me\u010f zachov\u00e1va detaily a m\u00f4\u017ee dosiahnu\u0165 jemnej\u0161\u00ed povrch. Sk\u00fasen\u00ed v\u00fdrobcovia \u010dasto pou\u017e\u00edvaj\u00fa viac elektr\u00f3d: hrubovaciu, polodokon\u010dovaciu na stabiliz\u00e1ciu stien a dokon\u010dovaciu na \u00fazke tolerancie a po\u017eadovan\u00fa hodnotu Ra.<\/p>\n<h3>Pou\u017eitie, tolerancie a kvalita povrchu<\/h3>\n<p>H\u013abiace EDM je vhodn\u00e9 na 3D dutiny foriem, reli\u00e9fne prvky, rebr\u00e1, hlbok\u00e9 vreck\u00e1, log\u00e1 a geometrie nedostupn\u00e9 rovn\u00e9mu dr\u00f4tu. Pod\u013ea ve\u013ekosti a nastavenia s\u00fa realistick\u00e9 tolerancie \u00b10.0002\u20130.001&#8243;; pri dokon\u010dovac\u00edch v\u00fdbojoch mo\u017eno dosiahnu\u0165 drsnos\u0165 pod 1 \u03bcm Ra. Ke\u010f\u017ee geometriu pren\u00e1\u0161a elektr\u00f3da, be\u017en\u00e9 s\u00fa zlo\u017eit\u00e9 prechody a vo\u013en\u00e9 tvary vo <span style=\"color: #3366ff;\"><a style=\"color: #3366ff;\" href=\"https:\/\/moldiecasting.com\/sk\/blog\/metal-injection-molding-vs-die-casting\/\">vstrekovac\u00edch form\u00e1ch<\/a><\/span> a n\u00e1strojoch na tlakov\u00e9 liatie.<\/p>\n<h3>V\u00fdhody a obmedzenia<\/h3>\n<ul>\n<li class=\"ds-markdown-paragraph\"><strong>Skuto\u010dn\u00e9 3D mo\u017enosti:<\/strong>\u00a0Hlavnou prednos\u0165ou je tvorba slep\u00fdch dut\u00edn, podrezan\u00ed a zlo\u017eit\u00fdch trojrozmern\u00fdch tvarov, ktor\u00e9 dr\u00f4tov\u00e9 EDM nedok\u00e1\u017ee vytvori\u0165.<\/li>\n<li class=\"ds-markdown-paragraph\"><strong>Vynikaj\u00faca kvalita povrchu:<\/strong>\u00a0Dok\u00e1\u017ee dosiahnu\u0165 mimoriadne jemn\u00fd povrch pri zlo\u017eit\u00fdch obrysoch a \u010dasto eliminuje potrebu ru\u010dn\u00e9ho le\u0161tenia.<\/li>\n<\/ul>\n<p><strong>Obmedzenia<\/strong>: Neust\u00e1ly \u00fabytok elektr\u00f3dy si vy\u017eaduje kompenz\u00e1ciu opotrebovania v programe a \u010dasto aj v\u00fdrobu viacer\u00fdch elektr\u00f3d. Objemov\u00fd \u00faber je spravidla pomal\u0161\u00ed ne\u017e pri dr\u00f4tovom EDM, preto je menej efekt\u00edvny na odoberanie ve\u013ek\u00e9ho mno\u017estva materi\u00e1lu. Ka\u017ed\u00e1 jedine\u010dn\u00e1 dutina vy\u017eaduje samostatn\u00fa elektr\u00f3du a pri hlbok\u00fdch \u00fazkych prvkoch m\u00f4\u017ee by\u0165 n\u00e1ro\u010dn\u00e9 odplavovanie dielektrikom, \u010do zhor\u0161uje r\u00fdchlos\u0165 aj presnos\u0165.<\/p>\n<h2>EDM v\u0155tanie otvorov (r\u00fdchle\/mal\u00e9 otvory)<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1336\" src=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/6.jpg\" alt=\"Elektroeroz\u00edvne v\u0155tanie otvorov\" width=\"800\" height=\"450\" srcset=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/6.jpg 800w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/6-300x169.jpg 300w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/6-768x432.jpg 768w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/6-18x10.jpg 18w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/6-600x338.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<h3>Princ\u00edp procesu<\/h3>\n<p class=\"ds-markdown-paragraph\">Z\u00e1kladom EDM v\u0155tania je r\u00fdchlo rotuj\u00faca dut\u00e1 elektr\u00f3da, zvy\u010dajne z mosadze, medi alebo medeno-volfr\u00e1movej zliatiny odolnej proti opotrebovaniu. Dut\u00e1 r\u00farka spravidla sl\u00fa\u017ei ako kat\u00f3da a obrobok ako an\u00f3da. Gener\u00e1tor priv\u00e1dza vysokofrekven\u010dn\u00e9 impulzy do medzery medzi nimi; riaden\u00e9 iskry odparuj\u00fa a eroduj\u00fa materi\u00e1l.<\/p>\n<p class=\"ds-markdown-paragraph\">K\u013e\u00fa\u010dov\u00e1 je tlakov\u00e1 dielektrick\u00e1 kvapalina, zvy\u010dajne deionizovan\u00e1 voda, \u010derpan\u00e1 stredom rotuj\u00facej elektr\u00f3dy. Siln\u00fdm pr\u00fadom vyplavuje erodovan\u00e9 \u010dastice z \u00fazkej medzery a zabra\u0148uje skratu; z\u00e1rove\u0148 deionizuje kan\u00e1l a udr\u017eiava stabiln\u00e9 iskrenie. Rot\u00e1cia elektr\u00f3dy zabezpe\u010duje rovnomern\u00e9 opotrebovanie a stabilizuje r\u00farku, tak\u017ee otvor je rovnej\u0161\u00ed. Servosyst\u00e9m priebe\u017ene upravuje polohu elektr\u00f3dy a udr\u017eiava presn\u00fa iskrov\u00fa medzeru aj pri prehlbovan\u00ed otvoru. Tak mo\u017eno v kalen\u00fdch materi\u00e1loch vytv\u00e1ra\u0165 hlbok\u00e9 otvory s mal\u00fdm priemerom bez priehybu n\u00e1stroja, ktor\u00fd hroz\u00ed pri tradi\u010dnom obr\u00e1ban\u00ed.<\/p>\n<h3>Pou\u017eitie: za\u010diato\u010dn\u00e9 a chladiace otvory<\/h3>\n<p>V\u00fdrobcovia \u010dasto pou\u017e\u00edvaj\u00fa EDM v\u0155tanie na vytvorenie za\u010diato\u010dn\u00fdch otvorov pre dr\u00f4tov\u00e9 EDM, ke\u010f sa profil za\u010d\u00edna mimo hrany. \u0160tandardne sa pou\u017e\u00edva aj na mal\u00e9 chladiace otvory s vysok\u00fdm pomerom h\u013abky k priemeru v lopatk\u00e1ch a rozv\u00e1dza\u010doch turb\u00edn, na vzory v\u00fdstupn\u00e9ho a filmov\u00e9ho chladenia a na presn\u00e9 otvory v zdravotn\u00edckych \u010di mikrofluidn\u00fdch s\u00fa\u010diastkach. Vhodn\u00fdmi materi\u00e1lmi s\u00fa zliatiny na b\u00e1ze niklu, tit\u00e1n a kalen\u00e9 ocele, ak s\u00fa vodiv\u00e9.<\/p>\n<h3>R\u00fdchlos\u0165, presnos\u0165 a obmedzenia<\/h3>\n<ul>\n<li class=\"ds-markdown-paragraph\"><strong>R\u00fdchlos\u0165 v\u0155tania otvorov:<\/strong>\u00a0EDM v\u0155tanie je mimoriadne r\u00fdchle pri tvorbe mal\u00fdch a hlbok\u00fdch otvorov, najm\u00e4 v tvrd\u00fdch vodiv\u00fdch materi\u00e1loch, v ktor\u00fdch je be\u017en\u00e9 v\u0155tanie pomal\u00e9 alebo nemo\u017en\u00e9. R\u00fdchlos\u0165 z\u00e1vis\u00ed od tlaku dielektrika, materi\u00e1lu elektr\u00f3dy a zliatiny; umo\u017e\u0148uje r\u00fdchlu tvorbu za\u010diato\u010dn\u00fdch otvorov aj vzorov s ve\u013ek\u00fdm po\u010dtom otvorov.<\/li>\n<li class=\"ds-markdown-paragraph\"><strong>Presnos\u0165 priemeru: <\/strong>Proces vynik\u00e1 polohovou presnos\u0165ou a tvorbou rovn\u00fdch otvorov s vysok\u00fdm pomerom h\u013abky k priemeru a priemerom u\u017e od 0.015 palca.<\/li>\n<\/ul>\n<p class=\"ds-markdown-paragraph\"><strong>Obmedzenia:<\/strong> \u0160pecializ\u00e1cia na presnos\u0165 prin\u00e1\u0161a kompromisy. Povrch otvorov b\u00fdva drsnej\u0161\u00ed ne\u017e pri dr\u00f4tovom EDM alebo dokon\u010dovac\u00edch priechodoch h\u013abiaceho EDM. Proces je navy\u0161e obmedzen\u00fd preva\u017ene na rovn\u00e9 otvory a nedok\u00e1\u017ee vytv\u00e1ra\u0165 ohnut\u00e9 tvary. Intenz\u00edvne lok\u00e1lne teplo m\u00f4\u017ee zanecha\u0165 pretaven\u00fa vrstvu a drobn\u00e9 otrepy pri vstupe a v\u00fdstupe, ktor\u00e9 pri kritick\u00fdch aplik\u00e1ci\u00e1ch m\u00f4\u017eu vy\u017eadova\u0165 \u010fal\u0161ie dokon\u010denie.<\/p>\n<h2>\u0160pecializovan\u00e9 EDM stroje a hybridn\u00e9 procesy<\/h2>\n<h3>EDM s pr\u00e1\u0161kov\u00fdmi pr\u00edmesami (PMEDM)<\/h3>\n<p>Pri tejto technike sa do dielektrika prid\u00e1vaj\u00fa vodiv\u00e9 alebo polovodiv\u00e9 pr\u00e1\u0161ky. Roz\u0161iruj\u00fa kan\u00e1l v\u00fdboja, zni\u017euj\u00fa hustotu energie a zlep\u0161uj\u00fa povrch pri men\u0161om opotrebovan\u00ed n\u00e1stroja. PMEDM je u\u017eito\u010dn\u00e9 pri dokon\u010dovac\u00edch priechodoch na form\u00e1ch alebo komponentoch, kde z\u00e1le\u017e\u00ed na integrite povrchu. Vy\u017eaduje filtr\u00e1ciu a riadenie procesu, aby koncentr\u00e1cia zostala rovnomern\u00e1.<\/p>\n<h3>Fr\u00e9zovanie\/orbit\u00e1lne EDM na 3D tvary<\/h3>\n<p>Tento postup, zn\u00e1my aj ako piestov\u00e9 fr\u00e9zovanie EDM, vyu\u017e\u00edva mal\u00fa elektr\u00f3du, ktor\u00e1 sleduje 3D dr\u00e1hu a orbit\u00e1lnym pohybom vytv\u00e1ra zlo\u017eit\u00e9 tvary podobne ako gu\u013eov\u00e1 fr\u00e9za, ale bez rezn\u00fdch s\u00edl. Je \u00fa\u010dinn\u00fd pri jemn\u00fdch alebo \u0165a\u017eko dostupn\u00fdch prvkoch a m\u00f4\u017ee zn\u00ed\u017ei\u0165 po\u010det samostatn\u00fdch elektr\u00f3d.<\/p>\n<h2>Porovnanie v\u00fdkonu typov EDM strojov<\/h2>\n<h3>R\u00fdchlos\u0165 rezania a faktory ovplyv\u0148uj\u00face \u010das cyklu<\/h3>\n<ul>\n<li><strong>Dr\u00f4tov\u00e9 EDM<\/strong>: Vysok\u00e1 relat\u00edvna r\u00fdchlos\u0165 pri obvodov\u00fdch rezoch, najm\u00e4 pri dlh\u00fdch profiloch s kon\u0161tantnou v\u00fd\u0161kou. \u010cas cyklu z\u00e1vis\u00ed od v\u00fd\u0161ky s\u00fa\u010diastky, d\u013a\u017eky obrysu, po\u010dtu dokon\u010dovac\u00edch priechodov a odplavovania.<\/li>\n<li><strong>H\u013abiace EDM<\/strong>: Stredn\u00e1 r\u00fdchlos\u0165 \u00faberu; \u010das ur\u010duj\u00fa plocha elektr\u00f3dy, orbit\u00e1lna strat\u00e9gia a odplavovanie. V\u00fdroba elektr\u00f3dy predl\u017euje dodaciu lehotu.<\/li>\n<li><strong>V\u0155tanie otvorov<\/strong>: R\u00fdchle pri mal\u00fdch hlbok\u00fdch otvoroch; priepustnos\u0165 z\u00e1vis\u00ed od opotrebovania elektr\u00f3dy, tlaku dielektrika a zliatiny.<\/li>\n<\/ul>\n<h3>Presnos\u0165, tolerancie a kvalita povrchu (Ra)<\/h3>\n<ul>\n<li><strong>Dr\u00f4tov\u00e9 EDM<\/strong>: Ve\u013emi vysok\u00e1 presnos\u0165: be\u017en\u00e9 s\u00fa hodnoty \u00b10.0001\u20130.0002&#8243;; viacer\u00fdmi dokon\u010dovac\u00edmi priechodmi mo\u017eno dosiahnu\u0165 &lt;1 \u03bcm Ra.<\/li>\n<li><strong>H\u013abiace EDM<\/strong>: Vysok\u00e1 presnos\u0165: typick\u00e9 tolerancie \u00b10.0002\u20130.001&#8243;; pri dokon\u010dovac\u00edch v\u00fdbojoch s optimalizovanou energiou a orbit\u00e1lnym pohybom mo\u017eno dosiahnu\u0165 &lt;1 \u03bcm Ra.<\/li>\n<li><strong>V\u0155tanie otvorov<\/strong>: Vysok\u00e1 polohov\u00e1 presnos\u0165 otvorov; kvalita povrchu je v porovnan\u00ed s dr\u00f4tov\u00fdm a h\u013abiacim EDM stredn\u00e1.<\/li>\n<\/ul>\n<h3>Tepeln\u00e9 vplyvy: pretaven\u00e1 vrstva, mikrotrhliny a HAZ<\/h3>\n<p>Pri v\u0161etk\u00fdch procesoch EDM vznik\u00e1 tenk\u00e1 pretaven\u00e1 vrstva s mo\u017en\u00fdmi mikrotrhlinami, hoci tepelne ovplyvnen\u00e1 oblas\u0165 (HAZ) b\u00fdva plytk\u00e1. Mo\u017eno ju obmedzi\u0165 dokon\u010dovac\u00edmi priechodmi s ni\u017e\u0161ou energiou, optimalizovan\u00fdmi parametrami impulzov, vhodn\u00fdm odplavovan\u00edm a n\u00e1sledn\u00fdm le\u0161ten\u00edm alebo \u013eahk\u00fdm br\u00fasen\u00edm, ak je integrita povrchu kritick\u00e1 (napr. pri leteck\u00fdch komponentoch n\u00e1chyln\u00fdch na \u00fanavu).<\/p>\n<div dir=\"ltr\" align=\"left\">\n<table style=\"width: 95.9392%; height: 601px;\">\n<colgroup>\n<col style=\"width: 15.1163%;\" width=\"104\" \/>\n<col style=\"width: 15.1163%;\" width=\"104\" \/>\n<col style=\"width: 15.1163%;\" width=\"104\" \/>\n<col style=\"width: 15.1163%;\" width=\"104\" \/>\n<col style=\"width: 15.1163%;\" width=\"104\" \/>\n<col style=\"width: 15.1163%;\" width=\"104\" \/><\/colgroup>\n<thead>\n<tr>\n<th scope=\"col\">Typ EDM<\/th>\n<th scope=\"col\">R\u00fdchlos\u0165<\/th>\n<th scope=\"col\">Presnos\u0165<\/th>\n<th scope=\"col\">Kvalita povrchu (Ra)<\/th>\n<th scope=\"col\">Tepeln\u00e9 vplyvy<\/th>\n<th scope=\"col\">Typick\u00e9 pou\u017eitie<\/p>\n<p>&nbsp;<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Dr\u00f4tov\u00e9 EDM<\/td>\n<td>Vysok\u00e1<\/td>\n<td>Ve\u013emi vysok\u00e1<\/td>\n<td>&lt;1 \u03bcm<\/td>\n<td>Minim\u00e1lna HAZ, tenk\u00e1 pretaven\u00e1 vrstva<\/td>\n<td>Formy, razn\u00edky, profily<\/td>\n<\/tr>\n<tr>\n<td>H\u013abiace EDM<\/td>\n<td>Stredn\u00e1<\/td>\n<td>Vysok\u00e1<\/td>\n<td>&lt;1 \u03bcm<\/td>\n<td>Ur\u010dit\u00e1 pretaven\u00e1 vrstva, mo\u017en\u00e9 mikrotrhliny<\/td>\n<td>Dutiny foriem, reli\u00e9fne prvky<\/td>\n<\/tr>\n<tr>\n<td>V\u0155tanie otvorov<\/td>\n<td>R\u00fdchle\/stredn\u00e9<\/td>\n<td>Vysok\u00e1<\/td>\n<td>Stredn\u00e1<\/td>\n<td>Najm\u00e4 pri vstupe\/v\u00fdstupe<\/td>\n<td>Za\u010diato\u010dn\u00e9 a chladiace otvory<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>V\u00fdber vhodn\u00e9ho procesu elektroeroz\u00edvneho obr\u00e1bania<\/h2>\n<p>Teraz, ke\u010f pozn\u00e1te r\u00f4zne typy EDM, m\u00f4\u017eete si ich zhrn\u00fa\u0165 a vybra\u0165 vhodn\u00fd proces. Krit\u00e9ri\u00e1 v\u00fdberu mo\u017eno rozdeli\u0165 do \u0161tyroch oblast\u00ed.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1337\" src=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/edm.jpg\" alt=\"Elektroeroz\u00edvny stroj\" width=\"800\" height=\"450\" srcset=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/edm.jpg 800w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/edm-300x169.jpg 300w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/edm-768x432.jpg 768w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/edm-18x10.jpg 18w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/04\/edm-600x338.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<h3>Geometria a po\u017eiadavky na prvky<\/h3>\n<ul>\n<li><strong>Otvoren\u00e9 obrysy a priechodn\u00e9 profily<\/strong>: Vyberte dr\u00f4tov\u00e9 EDM. Je ide\u00e1lne, ak dr\u00f4t dosiahne cel\u00fa dr\u00e1hu bez podrezan\u00ed.<\/li>\n<li><strong>Uzavret\u00e9 dutiny a skuto\u010dn\u00e9 3D tvary<\/strong>: Vyberte h\u013abiace EDM. Vytv\u00e1ra prvky nedostupn\u00e9 dr\u00f4tom a pren\u00e1\u0161a zlo\u017eit\u00e9 tvary elektr\u00f3dy.<\/li>\n<li><strong>Mal\u00e9, hlbok\u00e9, rovn\u00e9 otvory<\/strong>: Vyberte EDM v\u0155tanie. Je najr\u00fdchlej\u0161ou cestou k za\u010diato\u010dn\u00fdm otvorom a chladiacim prvkom s vysok\u00fdm pomerom h\u013abky k priemeru.<\/li>\n<\/ul>\n<h3>Materi\u00e1l, tvrdos\u0165 a stav po tepelnom spracovan\u00ed<\/h3>\n<p>V\u0161etky typy EDM vy\u017eaduj\u00fa elektrick\u00fa vodivos\u0165, tvrdos\u0165 v\u0161ak nie je obmedzen\u00edm. EDM je vhodn\u00e9 pre tepelne spracovan\u00e9 n\u00e1strojov\u00e9 ocele, karbidy, tit\u00e1n aj zliatiny niklu. Ak je d\u00f4le\u017eit\u00e1 rozmerov\u00e1 stabilita po tepelnom spracovan\u00ed, EDM po kalen\u00ed odstra\u0148uje riziko deform\u00e1cie sp\u00f4sobenej rezn\u00fdmi silami. Pri karbide alebo krehk\u00fdch materi\u00e1loch uprednostnite dr\u00f4tov\u00e9 EDM alebo starostlivo nastaven\u00e9 parametre h\u013abiaceho EDM, aby sa minimalizovali mikrotrhliny.<\/p>\n<h3>Ve\u013ekos\u0165 d\u00e1vky, n\u00e1klady a ekonomika n\u00e1strojov<\/h3>\n<ul>\n<li><strong>Prototypy a mal\u00e9 s\u00e9rie<\/strong>: Dr\u00f4tov\u00e9 EDM minimalizuje po\u010diato\u010dn\u00e9 n\u00e1klady na n\u00e1stroje a vy\u017eaduje m\u00e1lo elektr\u00f3d, preto je n\u00e1kladovo efekt\u00edvne pri jednorazov\u00fdch a kr\u00e1tkych s\u00e9ri\u00e1ch.<\/li>\n<li><strong>Ve\u013ekos\u00e9riov\u00e9 formy alebo opakovan\u00e9 dutiny<\/strong>: H\u013abiace EDM sa st\u00e1va hospod\u00e1rnym, ke\u010f sa n\u00e1klady na n\u00e1vrh a v\u00fdrobu elektr\u00f3d rozlo\u017eia medzi ve\u013ea s\u00fa\u010diastok. Efekt\u00edvna strat\u00e9gia elektr\u00f3d (hrubovanie\/dokon\u010dovanie, zdie\u013ean\u00e1 geometria) zni\u017euje celkov\u00e9 n\u00e1klady.<\/li>\n<li><strong>Pracovisk\u00e1 na v\u0155tanie otvorov<\/strong>: Pri opakovan\u00fdch vzoroch chladiacich otvorov zabezpe\u010duje automatizovan\u00e9 EDM v\u0155tanie predv\u00eddate\u013en\u00fa priepustnos\u0165.<\/li>\n<\/ul>\n<h3>Automatiz\u00e1cia, upnutie a monitorovanie procesu<\/h3>\n<p>Modern\u00e9 EDM podporuje bezobslu\u017en\u00fa v\u00fdrobu. Automatick\u00e9 navlieka\u010de dr\u00f4tu, meni\u010de n\u00e1strojov, meranie po\u010das procesu a monitorovanie strojov skracuj\u00fa prestoje a zni\u017euj\u00fa nepodarkovos\u0165. Uprednostnite:<\/p>\n<ul>\n<li>\u010cist\u00e9 dielektrikum a stabiln\u00fa filtr\u00e1ciu na zachovanie stabiln\u00e9ho iskrenia.<\/li>\n<li>Pevn\u00e9 upnutie so spo\u013eahliv\u00fdmi z\u00e1klad\u0148ami pre opakovate\u013enos\u0165 medzi dokon\u010dovac\u00edmi priechodmi alebo elektr\u00f3dami.<\/li>\n<li>Adapt\u00edvne gener\u00e1tory a riadenie rohov na ochranu presnosti pri mal\u00fdch vn\u00fatorn\u00fdch polomeroch.<\/li>\n<li>SPC a zaznamen\u00e1vanie s\u00faborov parametrov na zabezpe\u010denie doh\u013eadate\u013enosti pri regulovanom presnom obr\u00e1ban\u00ed zdravotn\u00edckych a leteck\u00fdch dielov.<\/li>\n<\/ul>\n<h2>Z\u00e1ver<\/h2>\n<p class=\"ds-markdown-paragraph\">Elektroeroz\u00edvne obr\u00e1banie umo\u017e\u0148uje vytv\u00e1ra\u0165 zlo\u017eit\u00e9 kon\u0161trukcie pomocou presn\u00e9ho <span style=\"color: #3366ff;\"><a style=\"color: #3366ff;\" href=\"https:\/\/moldiecasting.com\/sk\/blog\/cnc-machining-vs-die-casting\/\">CNC obr\u00e1bania<\/a><\/span> a prekon\u00e1va tvrdos\u0165 materi\u00e1lu kombin\u00e1ciou vhodn\u00fdch met\u00f3d: dr\u00f4tov\u00e9 EDM na profily, h\u013abiace EDM na dutiny a EDM v\u0155tanie na hlbok\u00e9 otvory.<\/p>\n<p class=\"ds-markdown-paragraph\">V\u010faka poznatkom z na\u0161ich \u010dl\u00e1nkov budete m\u00f4c\u0165 informovane vybra\u0165 EDM, zlep\u0161i\u0165 kvalitu s\u00fa\u010diastok a zv\u00fd\u0161i\u0165 konkurencieschopnos\u0165 v pokro\u010dilej v\u00fdrobe!<\/p>\n<h2>\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n<h3 class=\"ds-markdown-paragraph\">Je EDM ur\u010den\u00e9 len na kovy? Mo\u017eno ho pou\u017ei\u0165 na m\u00e4kk\u00e9, nekalen\u00e9 materi\u00e1ly?<\/h3>\n<p class=\"ds-markdown-paragraph\">Nie celkom. EDM sa pod\u013ea defin\u00edcie pou\u017e\u00edva v\u00fdhradne na elektricky vodiv\u00e9 materi\u00e1ly. Izolanty, ako s\u00fa plasty, sklo a be\u017en\u00e1 keramika \u010di kompozity, nemo\u017eno obr\u00e1ba\u0165. Vodiv\u00e9 s\u00fa v\u0161ak aj materi\u00e1ly ako grafit, karbid krem\u00edka, diborid tit\u00e1nu a niektor\u00e9 polym\u00e9rne kompozity. Hoci ide o okrajov\u00e9 aplik\u00e1cie EDM, mo\u017eno ich touto met\u00f3dou obr\u00e1ba\u0165.<\/p>\n<p class=\"ds-markdown-paragraph\">Ak sa m\u00e4kk\u00fdmi materi\u00e1lmi myslia m\u00e4kk\u00e9 kovy, napr\u00edklad hlin\u00edk alebo m\u00e4kk\u00e1 oce\u013e, EDM je pou\u017eite\u013en\u00e9, hoci sa \u010dastej\u0161ie vyu\u017e\u00edva na tvrd\u0161ie materi\u00e1ly. Tradi\u010dn\u00e9 met\u00f3dy obr\u00e1bania s\u00fa v\u0161ak \u010dasto r\u00fdchlej\u0161ie a n\u00e1kladovo efekt\u00edvnej\u0161ie, pokia\u013e geometria nie je mimoriadne zlo\u017eit\u00e1 alebo jemn\u00e1.<\/p>\n<h3 class=\"ds-markdown-paragraph\">Ako ve\u013ekos\u0165 s\u00fa\u010diastky obmedzuje EDM?<\/h3>\n<p class=\"ds-markdown-paragraph\">Ka\u017ed\u00fd typ EDM m\u00e1 vlastn\u00e9 rozmerov\u00e9 obmedzenia. Dr\u00f4tov\u00e9 EDM obmedzuje dr\u00e1ha os\u00ed a ve\u013ekos\u0165 n\u00e1dr\u017ee. H\u013abiace EDM obmedzuje pracovn\u00e1 n\u00e1dr\u017e a nosnos\u0165 elektr\u00f3dy. Pri ve\u013emi ve\u013ek\u00fdch komponentoch, napr\u00edklad lodnej skrutke, s\u00fa potrebn\u00e9 \u0161pecializovan\u00e9 mas\u00edvne EDM stroje.<\/p>\n<h3 class=\"ds-markdown-paragraph\">\u010co sp\u00f4sobuje pretaven\u00fa vrstvu a je v\u017edy probl\u00e9mom?<\/h3>\n<p class=\"ds-markdown-paragraph\">Pretaven\u00e1 vrstva je tenk\u00e1, op\u00e4tovne stuhnut\u00e1 vrstva materi\u00e1lu, ktor\u00fd sa roztavil, ale dielektrick\u00e1 kvapalina ho neodplavila. Vznik\u00e1 pri ka\u017edom EDM, no jej v\u00fdznam z\u00e1vis\u00ed od aplik\u00e1cie. Pri mnoh\u00fdch form\u00e1ch a n\u00e1strojoch nie je podstatn\u00e1 alebo ju mo\u017eno odstr\u00e1ni\u0165<span style=\"color: #3366ff;\"> <a style=\"color: #3366ff;\" href=\"https:\/\/moldiecasting.com\/sk\/die-casting-surface-treatment\/\">povrchovou \u00fapravou<\/a><\/span>. Pri leteck\u00fdch komponentoch vystaven\u00fdch \u00fanave a vysok\u00e9mu nam\u00e1haniu je kritick\u00e1 a treba ju minimalizova\u0165 alebo odstr\u00e1ni\u0165.<\/p>\n<h3 class=\"ds-markdown-paragraph\">Pova\u017euje sa EDM za pomal\u00fd proces?<\/h3>\n<p class=\"ds-markdown-paragraph\">V porovnan\u00ed s konven\u010dn\u00fdm obr\u00e1ban\u00edm nie je EDM vo v\u0161eobecnosti r\u00fdchlym procesom hromadn\u00e9ho odoberania materi\u00e1lu. Jeho pr\u00ednos spo\u010d\u00edva v presnom obr\u00e1ban\u00ed, nie v samotnej r\u00fdchlosti. Jeho efekt\u00edvnos\u0165 je vysok\u00e1, ke\u010f\u017ee dok\u00e1\u017ee spoji\u0165 viacero krokov (napr. hrubovanie, tepeln\u00e9 spracovanie a dokon\u010dovacie obr\u00e1banie) a vyrobi\u0165 hotov\u00fa s\u00fa\u010diastku z kalen\u00e9ho polotovaru v jednom upnut\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vo v\u00fdrobe sa \u010dasto vyskytuj\u00fa s\u00fa\u010diastky, ktor\u00e9 s\u00fa pr\u00edli\u0161 tvrd\u00e9, tenk\u00e9 alebo zlo\u017eit\u00e9 na be\u017en\u00e9 obr\u00e1banie. Vtedy sa uplat\u0148uje elektroeroz\u00edvne obr\u00e1banie (EDM). Namiesto mechanickej sily odober\u00e1 materi\u00e1l riaden\u00fdmi elektrick\u00fdmi v\u00fdbojmi a dosahuje \u00fazke tolerancie pri n\u00e1strojov\u00fdch oceliach, karbidoch, tit\u00e1ne a \u010fal\u0161\u00edch \u0161peci\u00e1lnych zliatin\u00e1ch. Elektroeroz\u00edvne obr\u00e1banie sa pod\u013ea met\u00f3dy del\u00ed na viacero typov; naj\u010dastej\u0161ie s\u00fa dr\u00f4tov\u00e9 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":18501,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"Typy elektroeroz\u00edvneho obr\u00e1bania (EDM): sprievodca","_seopress_titles_desc":"Objavte hlavn\u00e9 typy elektroeroz\u00edvneho obr\u00e1bania vr\u00e1tane dr\u00f4tov\u00e9ho EDM, h\u013abiaceho EDM a v\u0155tania otvorov a zistite ich v\u00fdhody a pou\u017eitie.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"iawp_total_views":1,"footnotes":""},"categories":[189],"tags":[],"class_list":["post-17865","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/posts\/17865","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/comments?post=17865"}],"version-history":[{"count":5,"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/posts\/17865\/revisions"}],"predecessor-version":[{"id":20595,"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/posts\/17865\/revisions\/20595"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/media\/18501"}],"wp:attachment":[{"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/media?parent=17865"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/categories?post=17865"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/tags?post=17865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}