EDM Machining, Electrical-Discharge Milling and Grinding

ELECTRICAL DISCHARGE MACHINING (EDM), also referred to as SPARK-EROSION or ELECTRODISCHARGE MACHINING, SPARK ERODING, DIE SINKING_cc781905-5cde-3194-bb3b -136bad5cf58d_or WIRE EROSION, is a NON-CONVENTIONAL MANUFACTURING process where erosion of metals takes place and desired shape is obtained using electrical discharges in the form wezinhlansi. Futhi sinikezela ngezinhlobo ezithile ze-EDM, okuyizi NO-WEAR EDM, WIRE EDM (WEDM), I-EDM GRINDING (EDG), DIE-SINKING EDM, ELECTRICAL-DISCHARGE MILLING, m1-EDMEDM_5,8 micro-EDM0 -5cde-3194-bb3b-136bad5cf58d_and ELECTROCHEMICAL-DISCHARGE GINDING (ECDG). Amasistimu ethu e-EDM aqukethe amathuluzi/i-electrode anomumo kanye nendawo yokusebenza exhunywe kugesi we-DC futhi ifakwe kuketshezi lwe-dielectric olungasebenzi ngogesi. Ngemuva kuka-1940 imishini yokukhipha ugesi isiphenduke enye yezobuchwepheshe obubaluleke kakhulu futhi obuthandwa kakhulu ezimbonini zokukhiqiza.

 

Lapho ibanga eliphakathi kwama-electrode amabili lincishisiwe, ukushuba kwenkambu kagesi kuvolumu phakathi kwama-electrode kuba mkhulu kunamandla e-dielectric kwamanye amaphuzu, aphuka, agcine enza ibhuloho ukuze lamanje ligeleze phakathi kwama-electrode amabili. Kukhiqizwa i-arc kagesi enamandla okwenza ukushisisa okubalulekile kuncibilike ingxenye yocezu lokusebenza nezinye zezinto zamathuluzi. Ngenxa yalokho, izinto ezibonakalayo zisuswa kuwo womabili ama-electrode. Ngesikhathi esifanayo, i-dielectric fluid ishisa ngokushesha, okuholela ekuhwamukeni koketshezi esikhaleni se-arc. Uma ukugeleza kwamanje kuma noma kumisiwe ukushisa kuyasuswa kubhamuza legesi uketshezi oluzungezile lwe-dielectric kanye ne-bubble cavitates (iyagoqa). Igagasi lokushaqisa elidalwe ukuwa kwebhamuza nokugeleza kwemfucumfucu ye-dielectric fluid esuka endaweni yokusebenza futhi ifaka noma iyiphi into encibilikisiwe yocezu lokusebenza kuketshezi lwe-dielectric. Izinga lokuphinda lalokhu kukhishwa liphakathi kuka-50 kuya ku-500 kHz, ama-voltage aphakathi kuka-50 kuya ku-380 V nemisinga phakathi kuka-0.1 no-500 Amperes. I-liquid dielectric entsha efana namafutha amaminerali, uphalafini noma amanzi acwengekile & akhishwe yi-deionized ngokuvamile adluliswa kuvolumu ye-inter-electrode ethwala izinhlayiya eziqinile (ngesimo semfucumfucu) futhi izici zokuvikela ze-dielectric ziyabuyiselwa. Ngemva kokugeleza kwamanje, umehluko ongaba khona phakathi kwama-electrode amabili ubuyiselwa kulokho owawuyikho ngaphambi kokuwohloka, ngakho-ke kungenzeka ukuwohloka okusha kwe-dielectric okuwuketshezi. Imishini yethu yesimanje yokukhipha ugesi (EDM) ihlinzeka ngokunyakaza okulawulwa izinombolo futhi ifakwe amaphampu nezinhlelo zokuhlunga uketshezi lwe-dielectric.

 

I-electrical discharge machining (EDM) iyindlela yomshini esetshenziselwa ikakhulukazi izinsimbi eziqinile noma lezo ezingaba nzima kakhulu ukuzisebenzisa ngamasu avamile. I-EDM ngokuvamile isebenza nanoma yiziphi izinto ezisebenza ngogesi, nakuba izindlela zokwenza ama-ceramics afaka insulating nge-EDM nazo ziye zahlongozwa. Iphoyinti lokuncibilika kanye nokushisa okucashile kokuncibilika kuyizici ezinquma ivolumu yensimbi ekhishwa ngokukhipha ngakunye. Ukuphakama kwalawa manani, izinga lokususwa kwezinto lihamba kancane. Ngenxa yokuthi inqubo yomshini wokukhipha ugesi ayibandakanyi noma yimaphi amandla emishini, ubulukhuni, amandla, nokuqina kwe-workpiece akuthinti izinga lokususa. Imvamisa yokukhipha noma amandla ngokukhipha ngakunye, i-voltage kanye namanje kuyahlukahluka ukuze kulawulwe amazinga okususwa kwezinto. Izinga lokususwa kwezinto kanye nokuba mahhadlahhadla kwendawo liyakhula ngokukhula kwabantu bamanje kanye nokuncipha kwemvamisa yenhlansi. Singasika amakhonto noma izimbobo eziyinkimbinkimbi ngensimbi eqiniswe ngaphambili sisebenzisa i-EDM ngaphandle kwesidingo sokwelashwa kokushisa ukuze kuthambe futhi kuqinise kabusha. Singasebenzisa le ndlela nganoma iyiphi ingxubevange yensimbi noma yensimbi njenge-titanium, i-hastelloy, i-kovar, ne-inconel. Izicelo zenqubo ye-EDM zihlanganisa ukubunjwa kwamathuluzi edayimane e-polycrystalline. I-EDM ibhekwa njengendlela yokukhanda okungeyona yendabuko noma engeyona evamile kanye nezinqubo ezifana ne-electrochemical machining (ECM), ukusika ijethi yamanzi (WJ, AWJ), ukusika i-laser. Ngakolunye uhlangothi izindlela ezivamile zomshini zihlanganisa ukuphenduka, ukugaya, ukugaya, ukubhoboza nezinye inqubo omshini wayo wokukhipha impahla usekelwe ngamandla emishini. Ama-Electrode omshini wokukhipha ugesi (EDM) enziwe nge-graphite, ithusi, ithusi ne-copper-tungsten alloy. Ububanzi be-electrode behle bufike ku-0.1mm bungenzeka. Njengoba ukugqokwa kwamathuluzi kuyisenzo esingafuneki esithinta kabi ukunemba kobukhulu ku-EDM, sisebenzisa inqubo ebizwa NO-WEAR EDM, ngokuhlehlisa i-polarity nokusebenzisa amathuluzi ethusi ukuze sinciphise ukuguga kwamathuluzi.

 

Uma sikhuluma kahle, i-electrical-discharge machining (EDM) ingabhekwa njengochungechunge lokuqhekeka nokubuyiselwa koketshezi lwe-dielectric phakathi kwama-electrode. Eqinisweni, ukususwa kwemfucumfucu endaweni ye-inter-electrode cishe kuyingxenye. Lokhu kubangela ukufaneleka kukagesi we-dielectric endaweni ye-inter-electrodes ukuthi ihluke kumanani awo ajwayelekile futhi ihluke ngokuhamba kwesikhathi. Ibanga eliphakathi kwe-electrode, (i-spark-gap), lilungiswa ngama-algorithms okulawula omshini othize osetshenzisiwe. I-spark-gap ku-EDM ngeshwa ngezinye izikhathi ingafinyezwa yimfucumfucu. Isistimu yokulawula ye-electrode ingase yehluleke ukusabela ngokushesha ngokwanele ukuvimbela ama-electrode amabili (ithuluzi nocezu lokusebenza) ekujikelezeni okufushane. Lesi sijikelezo esifushane esingafuneki sinomthelela ekususweni kwezinto ngendlela ehlukile kunekesi efanelekile. Sikhokha okubaluleke kakhulu esenzweni sokuguquguquka ukuze sibuyisele izakhiwo ezivikelayo ze-dielectric ukuze amandla akhona njalo enzeka endaweni ye-inter-electrode, ngaleyo ndlela sinciphise amathuba okushintsha kwesimo esingafuneki (umonakalo) we-tool-electrode. kanye ne-workpiece. Ukuze uthole i-geometry ethile, ithuluzi le-EDM liqondiswa endleleni oyifunayo eduze kakhulu nendawo yokusebenza ngaphandle kokuyithinta, Sinaka kakhulu ukusebenza kokulawula ukunyakaza okusetshenziswayo. Ngale ndlela, inani elikhulu lokukhishwa / izinhlansi zamanje zenzeka, futhi ngayinye inomthelela ekususweni kwezinto ezibonakalayo kokubili ithuluzi kanye nomsebenzi, lapho kwakhiwa khona ama-craters amancane. Ubukhulu bama-crater kuwumsebenzi wamapharamitha wezobuchwepheshe asethelwe umsebenzi othile oseduze futhi ubukhulu bungasukela ku-nanoscale (njengakumsebenzi we-micro-EDM) kuye kumakhulu ama-micrometer ezimeni ezimaholoholo. Lawa ma-craters amancane ethuluzi abangela ukuguguleka kancane kancane kwe-electrode ebizwa ngokuthi "ukugqoka kwamathuluzi". Ukuze simelane nomthelela olimazayo wokuguga ku-geometry yesiqeshana somsebenzi sihlala sishintsha ithuluzi-electrode ngesikhathi sokusebenza komshini. Kwesinye isikhathi sifinyelela lokhu ngokusebenzisa intambo eshintshwa ngokuqhubekayo njenge-electrode ( le nqubo ye-EDM ibizwa nangokuthi WIRE EDM ). Ngezinye izikhathi sisebenzisa i-tool-electrode ngendlela yokuthi ingxenye encane kuphela yayo ihileleke enqubweni yomshini futhi le ngxenye ishintshwa njalo. Lokhu, ngokwesibonelo, kuyisimo lapho usebenzisa idiski ezungezayo njengethuluzi-electrode. Le nqubo ibizwa ngokuthi EDM UKUSIYA. Kodwa enye indlela esiyisebenzisayo ihlanganisa ukusebenzisa isethi yama-electrode anosayizi abahlukene kanye nokuma ngesikhathi sokusebenza kwe-EDM efanayo ukuze kunxeshezelwe ukuguga. Sibiza le ndlela yama-electrode amaningi, futhi isetshenziswa kakhulu lapho i-electrode yethuluzi iphindaphinda ngokunegethivu umumo oyifunayo futhi ithuthukela endaweni engenalutho ngendlela eyodwa, ngokuvamile iqonde mpo (okungukuthi z-eksisi). Lokhu kufana nokucwila kwethuluzi oketshezini lwe-dielectric lapho kucwiliswa khona ucezu lokusebenza, ngakho-ke lubizwa ngokuthi DIE-SINKING EDM_cc781905-5cde-3194-bb3bac55888cf51194-bb3bac58518-bb3b5181994-bb3b5-8cf-8cf51994-bb3b5-51994-bb3589994-6099999999_cd_5994-60899999-0994-1 3194-bb3b-136bad5cf58d_CONVENTIONAL EDM or RAM EDM). Imishini yalo msebenzi ibizwa ngokuthi SINKER EDM. Ama-electrode alolu hlobo lwe-EDM anamafomu ayinkimbinkimbi. Uma ijiyomethri yokugcina itholakala kusetshenziswa i-electrode emise okume ngendlela elula enyakaziswa ngezindlela ezimbalwa futhi ingaphansi kokuzungezisa, siyibiza EDM MILLING. Inani lokugqoka lincike ngokuqinile kumingcele yezobuchwepheshe esetshenziswa ekusebenzeni (i-polarity, yamanje ephezulu, i-voltage yesifunda evulekile). Isibonelo, ku micro-EDM, eyaziwa nangokuthi m-EDM, le mingcele ivamise ukusethwa ngamavelu agugileyo akhiqiza amandla aqinile. Ngakho-ke, ukuguga kuyinkinga enkulu kuleyo ndawo esiyinciphisa sisebenzisa ulwazi lwethu esiluqongelele. Isibonelo ukunciphisa ukuguga kwama-electrode e-graphite, ijeneretha yedijithali, elawulekayo phakathi kwama-millisecond, ihlehlisa i-polarity njengoba ukuguguleka kwe-electro kwenzeka. Lokhu kubangela umphumela ofana ne-electroplating efaka ngokuqhubekayo i-graphite egugulekile emuva ku-electrode. Kwenye indlela, okubizwa ngokuthi ''Zero Wear'' sinciphisa ukuthi ukukhishwa kuqala kangaki futhi kume, sikugcine kuvuliwe isikhathi eside ngangokunokwenzeka. Izinga lokususwa kwezinto kumishini yokukhipha ugesi lingalinganiselwa kusuka:

 

MRR = 4 x 10 exp(4) x I x Tw exp (-1.23)

 

Lapha i-MRR iku-mm3/min, okwamanje ngise-Ampes, i-Tw iyindawo encibilikayo yocezu lokusebenza ku-K-273.15K. I-exp imele i-exponent.

 

Ngakolunye uhlangothi, izinga lokugqoka le-Wt le-electrode lingatholakala ku:

 

Wt = ( 1.1 x 10exp(11) ) x I x Ttexp(-2.38)

 

Lapha i-Wt iku-mm3/min futhi i-Tt iyindawo yokuncibilika yezinto ze-electrode ku-K-273.15K

 

Okokugcina, isilinganiso sokugqoka se-workpiece kuya ku-electrode R singatholakala ku:

 

R = 2.25 x Trexp(-2.38)

 

Lapha i-Tr isilinganiso samaphuzu ancibilikayo we-workpiece kuya ku-electrode.

 

 

 

SINKER EDM :

 

I-Sinker EDM, ephinde ibizwe ngokuthi CAVITY TYPE EDM or_cc781903-5cdeectroctro engaphansi ye-Electrogram engu-5c-DM5-5cde-5cde-DM-5cdec-DM, i-Eletroli I-electrode ne-workpiece ixhunywe kugesi. Ukunikezwa kwamandla kudala amandla kagesi phakathi kwalokhu kokubili. Njengoba i-electrode isondela endaweni yokusebenza, ukuwohloka kwe-dielectric kwenzeka oketshezini, kwakha umzila we-plasma, bese kugxuma inhlansi encane. Izinhlansi zivame ukushaya eyodwa ngesikhathi ngenxa yokuthi mancane amathuba okuthi izindawo ezihlukene endaweni ye-inter-electrode zibe nezici zikagesi zasendaweni ezifanayo ezingenza inhlansi ibe khona kuzo zonke lezo zindawo ngesikhathi esisodwa. Amakhulu ezinkulungwane zalezi zinhlansi zenzeka ezindaweni ezingahleliwe phakathi kwe-electrode kanye nendawo yokusebenza ngomzuzwana. Njengoba isisekelo sensimbi siguguleka, futhi igebe lenhlansi liyakhula, i-electrode yehliswa ngokuzenzakalelayo ngomshini wethu we-CNC ukuze inqubo iqhubeke ingaphazanyiswa. Izinto zethu zokusebenza zinemijikelezo yokulawula eyaziwa ngokuthi ''ngesikhathi'' kanye ''nesikhathi sokuphumula''. Isilungiselelo sesikhathi sinquma ubude noma ubude benhlansi. Ukuhamba kwesikhathi kukhiqiza umgodi ojulile waleyo nhlansi nazo zonke izinhlansi ezilandelayo zalowo mjikelezo, okudala isiphetho esiqinile kucezu lokusebenza ngokuphambene nalokho. Isikhathi sokuphumula yisikhathi lapho inhlansi eyodwa ishintshwa enye. Isikhathi eside sivumela uketshezi lwe-dielectric ukuthi lugeleze ngombhobho ukuze luhlanze imfucumfucu egugulekile, ngaleyo ndlela kugwenywe ukujikeleza okufushane. Lezi zilungiselelo zilungiswa ngemizuzwana emincane.

 

 

 

WIRE EDM :

 

In WIRE ELECTRICAL DISCHARGE MACHINING (WEDM), also called WIRE-CUT EDM or WIRE CUTTING, we feed a ngocingo oluncane lwensimbi olunomucu owodwa wethusi endaweni yokusebenza, ecwiliswa ethangini loketshezi lwe-dielectric. I-EDM yocingo iwukuhluka okubalulekile kwe-EDM. Ngezinye izikhathi sisebenzisa i-EDM yokusika izintambo ukuze sisike amapuleti ajiye njengo-300mm futhi senze izibhakela, amathuluzi, futhi sife ngezinsimbi eziqinile okunzima ukuzisebenzisa ngezinye izindlela zokukhiqiza. Kule nqubo efana nokusika i-contour ngesaha, ucingo, oluhlala luphakelwa kusuka ku-spool, lubanjwe phakathi kweziqondiso zedayimane ezingaphezulu nezingaphansi. Iziqondiso ezilawulwa yi-CNC zihamba endizeni ye-x-y kanti umhlahlandlela ongaphezulu nawo unganyakaza ngokuzimela eksisini engu-z–u–v, okunikeze amandla okusika amajamo acijile naguqukayo (njengendilinga phansi nesikwele phezulu). Umhlahlandlela ongenhla ungalawula ukunyakaza kwe-eksisi kokuthi x–y–u–v–i–j–k–l–. Lokhu kuvumela i-WEDM ukuthi isike izimo eziyinkimbinkimbi nezintekenteke. I-kerf emaphakathi yokusika okokusebenza kwethu efinyelela izindleko ezingcono kakhulu zezomnotho nesikhathi somshini ngu-0.335 mm kusetshenziswa i-Ø 0.25 yethusi, ithusi noma intambo ye-tungsten. Kodwa-ke imihlahlandlela yedayimane engaphezulu nephansi yempahla yethu ye-CNC inembile kuze kufike ku-0.004 mm, futhi ingaba nendlela yokusika noma i-kerf encane njengo-0.021 mm isebenzisa intambo engu-Ø 0.02 mm. Ngakho-ke kungenzeka ukusikeka okuncane kakhulu. Ububanzi bokusika bukhulu kunobubanzi bocingo ngoba i-sparking ivela ezinhlangothini zocingo kuya endaweni yokusebenza, okubangela ukuguguleka. Le ''overcut'' iyadingeka, ezinhlelweni eziningi iyabikezela ngakho-ke inganxeshezelwa ( ku-micro-EDM lokhu akuvamile ukuba kube njalo). Ama-wire spool amade—i-spool engu-8 kg yentambo engu-0.25 mm ingaphezudlwana nje kwamakhilomitha angu-19 ubude. Ububanzi bentambo bungaba buncane obungama-micrometer angu-20 kanti ukunemba kwejometri kusendaweni engu-+/- 1 micrometer. Ngokuvamile sisebenzisa intambo kanye kuphela futhi siyisebenzise kabusha ngoba ishibhile. Ihamba ngesivinini esingaguquki esingu-0.15 kuya ku-9m/min futhi i-kerf engashintshi (slot) iyagcinwa ngesikhathi sokusikwa. Enqubweni ye-EDM yokusika izintambo sisebenzisa amanzi njengoketshezi lwe-dielectric, ukulawula ukumelana kwayo nezinye izakhiwo zikagesi ngezihlungi namayunithi e-de-ionizer. Amanzi asusa udoti osikiwe kude nendawo yokusika. Ukuhlanza kuyisici esibalulekile ekunqumeni isilinganiso esiphezulu sokuphakela sobukhulu bezinto ezinikeziwe ngakho-ke sikugcina kuvumelana. Isivinini sokusika ku-EDM yocingo ishiwo ngokuya ngokusikwa kwendawo ephambanayo ngesikhathi seyunithi, njengo-18,000 mm2/hr ngensimbi yensimbi engu-50mm ewugqinsi we-D2. Isivinini sokusika ngomugqa saleli cala sizoba ngu-18,000/50 = 360mm/hr Izinga lokususa impahla ku-EDM yocingo yileli:

 

MRR = Vf xhxb

 

Lapha i-MRR iku-mm3/min, i-Vf izinga lokuphakelayo kwentambo ibe ucezu lokusebenza ngo-mm/min, h ingugqinsi noma ukuphakama ngo-mm, futhi u-b yi-kerf, okungukuthi:

 

b = dw + 2s

 

Lapha i-dw iyi-diameter yocingo futhi u-s uyigebe phakathi kocingo nocezu lokusebenza ngo-mm.

 

Ngokuhambisana nokubekezelela okuqinile, izikhungo zethu zesimanje zokusika izintambo ze-multi axis EDM zengeze izici ezifana namakhanda amaningi okusika izingxenye ezimbili ngesikhathi esisodwa, izilawuli zokuvimbela ukuphuka kwezintambo, izici ezizenzakalelayo zokuzixhuma uma izintambo ziphuka, futhi zihleliwe. amasu omshini wokwandisa ukusebenza, amakhono aqondile nangama-angular cutting.

 

I-Wire-EDM isinika izingcindezi ezinsalela eziphansi, ngoba ayidingi amandla okusika aphezulu ukuze kususwe impahla. Uma amandla/amandla ngokushaya ngakunye ephansi ngokuqhathaniswa (njengasekuqedeni imisebenzi), ushintsho oluncane lwezakhiwo zemishini yento esebenzayo kulindeleke ngenxa yengcindezi ephansi eyinsalela.

 

 

 

ELECTRICAL-DISCHARGE GINDING (EDG) : Amasondo okugaya awaqukethe ama-abrasives, enziwe ngegraphite noma ithusi. Izinhlansi eziphindaphindayo phakathi kwesondo elijikelezayo nesiqeshana sokusebenza zisusa okubalulekile ezindaweni zokusebenza. Izinga lokususwa kwezinto ngu:

 

MRR = K x I

 

Lapha i-MRR iku-mm3/min, ngisebenza ku-Amperes, futhi i-K iyisici esibalulekile se-workpiece ku-mm3/A-min. Sivame ukusebenzisa ukugaya okukhipha ugesi ukuze sibone imifantu emincane ezingxenyeni. Kwesinye isikhathi sihlanganisa inqubo ye-EDG (Electrical-Discharge Grinding) nenqubo ye-ECG (Electrochemical Grinding) lapho impahla isuswa isenzo samakhemikhali, ugesi ophuma esondo legraphite uhlephula ifilimu ye-oxide futhi ugezwe yi-electrolyte. Inqubo ibizwa ngokuthi ELECTROCHEMICAL-DISCHARGE GINDING (ECDG). Yize noma inqubo ye-ECDG idla amandla amaningi uma kuqhathaniswa, iyinqubo esheshayo kune-EDG. Ikakhulukazi sigaya amathuluzi e-carbide sisebenzisa le ndlela.

 

 

 

Izicelo Zomshini Wokukhipha Ugesi:

 

Ukukhiqizwa kwe-prototype:

 

Sisebenzisa inqubo ye-EDM ekwenzeni isikhunta, ekwakhiweni kwamathuluzi nasekufeni, kanye nokwenza i-prototype nezingxenye zokukhiqiza, ikakhulukazi ezimbonini ze-aerospace, zezimoto neze-electronics lapho amanani okukhiqiza ephansi uma kuqhathaniswa. Ku-Sinker EDM, i-graphite, i-tungsten yethusi noma i-electrode yethusi ehlanzekile yenziwa ngomshini ibe yisimo esifiswayo (esingesihle) futhi idliswa endaweni yokusebenza ekugcineni kwenqama eqondile.

 

Ukwenza i-Coinage die:

 

Ukuze kudalwe ukufa kokukhiqiza ubucwebe namabheji ngenqubo ye-coinage (stamping), inkosi enhle ingenziwa ngesiliva esicwebezelayo, ngoba (ngezilungiselelo zomshini ezifanele) inkosi iguguleka kakhulu futhi isetshenziswa kanye kuphela. I-negative die ewumphumela ibe isiqiniswa futhi isetshenziswe yisando sokudonsa ukuze kukhiqizwe amaflethi anezigxivizo kusukela emakhasini asikiwe eshidi lethusi, isiliva, noma ingxube yegolide enobufakazi obuphansi. Kumabheji lawa maflethi angase aphinde alolongeke abe indawo egobile ngenye into. Lolu hlobo lwe-EDM luvame ukwenziwa ngaphansi kwe-dielectric esekelwe kuwoyela. Into eqediwe ingase icwengisiswe ngokuqinile (ingilazi) noma ngokuthambile (upende) koqweqwe lwawo kanye/noma kufakwe ugesi ngegolide elimsulwa noma nickel. Izinto ezithambile ezifana nesiliva zingase ziqoshwe ngesandla njengendlela yokucwengisiswa.

 

Ukumbiwa Kwezimbobo Ezincane:

 

Emishinini yethu ye-EDM yokusika izintambo, sisebenzisa i-EDM yokumba imbobo encane ukwenza imbobo endaweni yokusebenza lapho sixhuma khona intambo yokusebenza kwe-EDM yokusika intambo. Amakhanda ahlukene e-EDM aqondene ngqo nokubhoboza imigodi emincane afakwa emishinini yethu yokusika izintambo evumela amapuleti amakhulu aqinile ukuba abe nezingxenye eziqediwe eziguguleke kuzo njengoba kudingeka futhi ngaphandle kokumba ngaphambili. Siphinde sisebenzisa i-EDM yembobo encane ukuze sibhoboze imigqa yemigodi emaphethelweni ama-turbine blades asetshenziswa ezinjinini zejethi. Ukugeleza kwegesi kulezi zimbobo ezincane kuvumela izinjini ukuthi zisebenzise amazinga okushisa aphezulu kunalokho okungenzeka. I-high-temperature, eqinile kakhulu, i-crystal alloys eyodwa lawa ma-blades enziwe ngayo yenza ukukhanda okuvamile kwalezi zimbobo nge-aspect ratio ephezulu kube nzima kakhulu futhi kungenzeki. Ezinye izindawo zokufaka izicelo ze-EDM yembobo encane ukudala ama-orifices amancane ezingxenyeni zesistimu kaphethiloli. Ngaphandle kwamakhanda adidiyelwe e-EDM, sisebenzisa imishini ye-EDM yokumba imbobo yodwa enezimbazo ezingu-x–y emshinini oyimpumputhe noma ngokusebenzisa izimbobo. Ukubhoboza kwe-EDM kubhoboze izimbobo nge-electrode yeshubhu yethusi ende ezungeza ku-chuck ngokugeleza okungaguquki kwamanzi acwengekile noma akhishwe nge-deionized ageleza ku-electrode njenge-ejenti eshaywayo kanye ne-dielectric. Amanye ama-EDM okumba izimbobo ezincane ayakwazi ukubhoboza ngo-100 mm wensimbi ethambile noma eqinile ngaphansi kwemizuzwana eyi-10. Izimbobo eziphakathi kuka-0.3 mm no-6.1 mm zingafinyelelwa kulo msebenzi wokumba.

 

Metal disintegration machining:

 

Siphinde sibe nemishini ekhethekile ye-EDM ngenjongo ethile yokukhipha amathuluzi aphukile (ama-drill bits noma ompompi) ezingxenyeni zokusebenza. Le nqubo ibizwa nge-''metal disintegration machining''.

 

 

 

Izinzuzo kanye Nobubi Umshini Wokukhipha Ugesi:

 

Izinzuzo ze-EDM zifaka umshini woku:

 

- Amajamo ayinkimbinkimbi obekungaba nzima ukuwakhiqiza ngamathuluzi okusika ajwayelekile

 

- Impahla enzima kakhulu ekubekezeleleni okusondele kakhulu

 

- Izingcezu zomsebenzi ezincane kakhulu lapho amathuluzi okusika ajwayelekile angalimaza ingxenye yokucindezela kwethuluzi lokusika ngokweqile.

 

- Akukho ukuxhumana okuqondile phakathi kwethuluzi nesiqeshana somsebenzi. Ngakho-ke izingxenye ezithambile nezinto ezibuthakathaka zingenziwa ngomshini ngaphandle kokuhlanekezela.

 

- Kungatholakala isiphetho esihle.

 

- Izimbobo ezinhle kakhulu zingabhobozwa kalula.

 

 

 

Ukungalungi kwe-EDM kufaka phakathi:

 

- Izinga eliphansi lokususwa kwezinto.

 

- Isikhathi esengeziwe nezindleko ezisetshenziselwa ukudala ama-electrode enqama/isinki EDM.

 

- Ukukhiqiza kabusha amakhona abukhali ku-workpiece kunzima ngenxa yokugqoka kwe-electrode.

 

- Ukusetshenziswa kwamandla kuphezulu.

 

- ''I-Overcut'' yakhiwe.

 

- Ukugqoka kwamathuluzi okweqile kwenzeka ngesikhathi somshini.

 

- Izinto ezisebenza ngogesi ezingasebenzisi zingenziwa ngomshini kuphela ngokusetha okuqondile kwenqubo.