Edm imagwiritsidwa ntchito makamaka popanga ma mold ndi zigawo zokhala ndi mawonekedwe ovuta a mabowo ndi mabowo; Kukonza zipangizo zosiyanasiyana zoyendetsera magetsi, monga alloy yolimba ndi chitsulo cholimba; Kukonza mabowo akuya ndi abwino, mabowo opangidwa mwapadera, mipata yozama, malo olumikizirana opapatiza ndi kudula zidutswa zoonda, ndi zina zotero; Kukonza zida zosiyanasiyana zopangira, ma templates ndi ma gauge a mphete ya ulusi, ndi zina zotero.

Mfundo yogwiritsira ntchito

Panthawi ya EDM, ma electrode a zida ndi workpiece zimalumikizidwa motsatana ku mitengo iwiri ya magetsi othamanga ndikumizidwa mumadzi ogwirira ntchito, kapena madzi ogwirira ntchito amayikidwa mu gap yotulutsa. Ma electrode a zida amawongoleredwa kuti apereke workpiece kudzera mu gap automatic control system. Pamene gap pakati pa ma electrode awiriwa ikafika patali, mphamvu ya impulse yomwe imagwiritsidwa ntchito pa ma electrode awiriwa imaphwanya madzi ogwirira ntchito ndikupanga spark discharge.

Mu njira yaying'ono yotulutsira madzi, mphamvu zambiri zotenthetsera zimayikidwa nthawi yomweyo, kutentha kumatha kufika 10000℃ ndipo kuthamanga kumasinthasintha kwambiri, kotero kuti zinthu zachitsulo zomwe zili pamalo ogwirira ntchito a malowa zimasungunuka nthawi yomweyo ndikusanduka nthunzi, ndikuphulika mumadzi ogwirira ntchito, zimasungunuka mwachangu, ndikupanga tinthu tachitsulo tolimba, ndikuchotsedwa ndi madzi ogwirira ntchito. Panthawiyi pamwamba pa workpiece padzasiya zizindikiro zazing'ono za dzenje, kutuluka kwa madzi kumayima kwakanthawi, madzi ogwirira ntchito pakati pa ma electrode awiriwa kuti abwezeretse momwe insulation imakhalira.

Mphamvu yotsatira ya pulse imawonongeka pamalo ena pomwe ma electrode ali pafupi kwambiri, zomwe zimapangitsa kuti spark discharge ituluke ndikubwereza njirayi. Chifukwa chake, ngakhale kuti kuchuluka kwa chitsulo chomwe chimawonongeka pa pulse discharge ndi kochepa kwambiri, chitsulo chochulukirapo chikhoza kuwonongeka chifukwa cha zikwizikwi za pulse discharge pa sekondi, ndi mphamvu inayake.

Pokhala ndi mpata wokhazikika wotulutsira madzi pakati pa elekitirodi ya chida ndi chidutswa chogwirira ntchito, chitsulo cha chidutswa chogwirira ntchito chimazimiririka pamene elekitirodi ya chida imalowetsedwa mosalekeza mu chidutswa chogwirira ntchito, ndipo pomaliza mawonekedwe ofanana ndi mawonekedwe a elekitirodi ya chida amapangidwa. Chifukwa chake, bola mawonekedwe a elekitirodi ya chida ndi mawonekedwe oyendera pakati pa elekitirodi ya chida ndi chidutswa chogwirira ntchito, mitundu yosiyanasiyana ya ma profiles ovuta amatha kupangidwa. Ma electrode a zida nthawi zambiri amapangidwa ndi zinthu zosagwira dzimbiri zomwe zimakhala ndi conductivity yabwino, malo osungunuka kwambiri komanso zosavuta kukonza, monga mkuwa, graphite, copper-tungsten alloy ndi molybdenum. Pakukonza, elekitirodi ya chida imatayikanso, koma yochepera kuchuluka kwa dzimbiri la chitsulo chogwirira ntchito, kapena ngakhale pafupifupi kutayika konse.

Monga chotulutsira madzi, madzi ogwirira ntchito amakhalanso ndi gawo pakuziziritsa ndi kuchotsa chips panthawi yokonza. Madzi ogwiritsidwa ntchito wamba ndi apakatikati okhala ndi kukhuthala kochepa, malo owunikira kwambiri komanso magwiridwe antchito okhazikika, monga palafini, madzi osungunuka ndi emulsion. Makina amagetsi otulutsa mphamvu ndi mtundu wa kutulutsa mphamvu komwe kumadzipangitsa kukhala kosangalatsa, makhalidwe ake ndi awa: ma electrode awiri otulutsa mphamvu amakhala ndi mphamvu yayikulu asanatulutse madzi, pamene ma electrode awiriwa akuyandikira, chotulutsira chimasweka, kenako kutuluka kwa mphamvu kumachitika. Pamodzi ndi njira yosweka, kukana pakati pa ma electrode awiriwa kumachepa kwambiri, ndipo mphamvu pakati pa ma electrode imachepanso kwambiri. Njira yamadzi iyenera kuzimitsidwa pakapita nthawi itatha kusungidwa kwa nthawi yochepa (nthawi zambiri 10-7-10-3s) kuti isunge mawonekedwe a "mzati wozizira" wa kutulutsa mphamvu yamadzi (mwachitsanzo, mphamvu ya kutentha ya kusintha kwa mphamvu ya njira sifikira kuzama kwa electrode pakapita nthawi), kuti mphamvu ya njira igwiritsidwe ntchito pang'ono. Mphamvu ya njira ingayambitse kuti electrode iwonongeke m'deralo. Njira yomwe vuto la dzimbiri lomwe limapanga pogwiritsa ntchito kutulutsa mphamvu yamadzi limagwiritsa ntchito makina oyezera kuti Chipangizochi chimatchedwa machining amagetsi. Edm ndi kutulutsa kwa spark mu sing'anga yamadzimadzi mkati mwa ma voltage otsika. Malinga ndi mawonekedwe a electrode ya zida ndi mawonekedwe a kayendedwe pakati pa electrode ya zida ndi workpiece, edM ikhoza kugawidwa m'mitundu isanu. Kudula kwa edM pogwiritsa ntchito waya wodula pogwiritsa ntchito waya wosuntha ngati electrode ya zida ndi workpiece kumayenda motsatira mawonekedwe ndi kukula komwe mukufuna; Kupukuta kwa Edm pogwiritsa ntchito waya kapena kupanga gudumu lopukusira ngati electrode ya zida zopangira keyhole kapena kupanga kugaya; Kugwiritsidwa ntchito popanga ulusi wozungulira, thread plug gage [1], zida ndi zina. Kukonza mabowo ang'onoang'ono, kuphatikiza pamwamba, kulimbitsa pamwamba ndi mitundu ina ya kukonza. Edm imatha kukonza zipangizo ndi mawonekedwe ovuta omwe ndi ovuta kudula ndi njira wamba zopangira. Palibe mphamvu yodula panthawi yopanga; Sipanga burr ndi groove yodulira ndi zolakwika zina; Zida za electrode ya zida siziyenera kukhala zolimba kuposa zida za workpiece; Kugwiritsa ntchito mwachindunji kukonza magetsi, kosavuta kuchita zokha; Pambuyo pokonza, pamwamba pamapanga mawonekedwe a kusintha, omwe nthawi zina ayenera kuchotsedwa; N'zovuta kuthana ndi kuipitsidwa kwa utsi komwe kumachitika chifukwa choyeretsa ndi kukonza ntchito. madzimadzi.