Lo mhlahlandlela ophelele uzongena ujule emininingwaneni yokwenza izimbobo kumabhodi e-elekthronikhi athuthukile. Noma ngabe usebenza nge-prototype elula noma amabhodi anezingqimba eziningi ayinkimbinkimbi, ukuqonda ubuncane bosayizi wokubhoboza kanye nokulungiselelwa kokubhoboza kubaluleke kakhulu empumelelweni yakho. Kuyafaneleka ukufunda ngoba ukuthola amapharamitha akho okubhoboza kahle kuzonciphisa kakhulu izindleko, kugweme izingibe ezivamile, futhi kuqinisekise ukuthi i-PCB yakho isebenza njengoba kuhlosiwe. Funda izici ezibalulekile zenqubo yokumba ezigcina amadizayini anesivinini esiphezulu esebenza futhi ekhiqizwa endaweni yesimanje yesitolo.
Uma uphatha ulayini wokukhiqiza noma unikezela ngamathuluzi esitolo esimatasa, ukuqagela kuyinto yonke. Awukwazi ukukhokhela ukuba ne-drill snap mid-cycle. Udinga ukwazi kahle ukuthi i-drill ihlangana kanjani nepuleti. Kulo mhlahlandlela, sizokwephula ukumakhenikha kwe-pcb drill, sihlole imikhawulo yobuchwepheshe bokubhola ngomshini, futhi sichaze indlela yokuthuthukisa izakhiwo zesekethe yakho.
Iyini ngempela i-PCB drill futhi kungani osayizi bomshini bebaluleke kangaka?
Uma ubhekisisa ibhodi lesifunda elinyathelisiwe, ubona amakhulu, ngezinye izikhathi izinkulungwane, zemigodi emincane. Ukuze udale lezi zimbobo kahle, izimboni zisebenzisa i-pcb drill ethize kakhulu. I-pcb drill evamile iyithuluzi lokusika elikhethekile elenziwe ngokuphelele nge-carbide eqinile. Ungase uzibuze ukuthi kungani singasebenzisi insimbi evamile. Isizathu silula. Ipuleti le-fiberglass elisetshenziselwa ukwenza isekethe liyaluma ngendlela emangalisayo. Izokwenza buthuntu umshini wokubhoboza insimbi ojwayelekile ngemizuzwana. I-hard drill ye-carbide ihlala ibukhali, isika ngokuhlanzekile ngengilazi nezendlalelo zethusi.
Ukukhetha osayizi be-drill abalungile kungenye yezici ezibaluleke kakhulu zokuklama kwe-pcb. Usayizi wokubhoboza kanye nezidingo zokubhola ozikhethayo zisho ngqo ukuthi izingxenye zakho zembobo zizongena kanjani kamuva emugqeni wokuhlanganisa. Uma i-drill idala imbobo eqine kakhulu, izisebenzi zokuhlanganisa azikwazi ukufaka izingxenye. Uma i-drill idala imbobo exege kakhulu, i-solder ngeke ibambe ingxenye yomthofu ngokuphepha.
Uma ukhetha osayizi bokubhola abangalungile, uzonyusa ngokushesha izindleko zokukhiqiza. Ngesikhathi sokukhiqiza i-pcb, umshini we-CNC kufanele ushintshanise ngokomzimba i-drill ngayinye yobukhulu obuhlukahlukene bembobo. Ngokukhawulela inani lamasayizi okubhoboza ahlukile ekwakhiweni kwakho, usheshisa yonke inqubo yokumba. Ngaso sonke isikhathi lapho i-drill entsha ilayishwa ku-spindle, ithuba lephutha lomshini liyakhuphuka. Ngakho-ke, ukukhetha osayizi abalungile bokubhola kuqinisekisa ukuthi isekethe yakho iya ekukhiqizeni ngobuningi ngokushelela. Kufanele ngaso sonke isikhathi unamathele kumasayizi osayizi wokugaya ukuze ugcine isabelomali sakho sokwenziwa kwe-pcb siphansi ngangokunokwenzeka.
Unquma kanjani usayizi omncane wokubhoboza wesekethe yakho?
Wonke umkhiqizi we-pcb usebenza ngaphansi kwemikhawulo eqinile yomzimba. Usayizi omncane wokubhoboza umelela umshini wokubhoboza omncane kakhulu abangawuphusha ebhodini ngaphandle kokuphula i-drill ngokwayo. Imvamisa, amakhono okukhiqiza ajwayelekile ahlinzeka ngosayizi omncane wokubhola osuka ku-0.2 mm ukuya ku-0.3 mm wobuchwepheshe obujwayelekile bokubhola. Ngokuqonda izingqinamba zokubhoboza ezincane zefekthri oyikhethile, uyazivimbela ekuklameni ibhodi okungekho muntu ongalakha.
Uma usayizi wembobo oyikhethile mncane kakhulu, i-drill entekenteke izomane ihlwithe lapho ithinta ipuleti eliqinile. Ukushintsha i-drill ephukile kumisa yonke inqubo yokumba futhi kungonakalisa isekethe ephrintiwe ebizayo. Umshini kufanele ume, opharetha kufanele angenele, futhi kungase kudingeke ukuba kuchithwe ibhodi. Lokhu kuyiphupho elibi lokukhiqiza kahle. Ukuze uthuthukise umklamo wakho, kufanele usebenzise usayizi omncane kuphela lapho uzulazula izindawo eziminyene ngendlela emangalisayo ebhodini.
Kukho konke okunye esakhiweni, sebenzisa izimbobo ezinkulu. I-drill enkulu iqinile kakhulu, eyivumela ukuthi isike imbobo yokubhoboza ehlanzeke kakhulu ngaphandle kokudlidliza. Ngaso sonke isikhathi hlola imithetho ethile yokuklama enikezwe ifekthri yakho ukuze uqinisekise ubuncane obuncane bosayizi wokubhoboza ngaphambi kokuthi uthumele i-prototype yakho ukuze ikhiqizwe.
Buyini ubudlelwano phakathi kosayizi omncane wokubhoboza kanye nokunemba kwembobo yokubhoboza?
Ubuncane bosayizi wokubhola kanye nokunemba kokubhoboza kuyahambisana esitezi sesitolo. Imbobo encane yokubhoboza izulazula kalula. Uma ichopho lokubhoboza lishaya inqwaba eqinile yefiber yengilazi ngaphakathi kwepuleti, i-drill ifuna ukuchezuka. Udinga ukubekezelelana okuqinile ukuze uqinisekise ukuthi inqubo yokumba ifinyelela lapho okuqondiwe khona kuphedi yethusi. Imishini emihle ye-CNC igcina ukubekezelela okuqinile ±0.05 mm kwembobo yokubhoboza eqediwe. Uma i-drill izulazula ngaphezu kwalokhu, imbobo yokubhoboza ingase ihlukanise ngokuphelele umkhondo wesifunda esiseduze, konakalise ugesi.
Ukugcina i-drill iqonde ngokuphelele, izimboni zisebenzisa imishini eqinile kakhulu efakwe ama-spindles aphezulu e-RPM. Baphinde bathembele kumathuluzi e-carbide ekhwalithi ephezulu njengawethu I-Carbide Drills ukuqinisekisa ukuthi i-drill ngeke igobe ngaphansi kwengcindezi. Ukuze uthole imbobo encane yokubhoboza, umshini uhambisa i-drill phansi kancane kakhulu ukuvimbela ukuphuka.
Ngakho-ke, ukusebenzisa osayizi bokubhola abakhudlwana ngokwemvelo kuthuthukisa ukunemba kwembobo yakho yonke futhi empeleni kusheshisa inqubo yokumba. I-drill enkulu imane igobe kancane. Ingene epuletini ngokuzethemba. Uma unikezela ngamathuluzi esitolo esimatasa, ukubakhumbuza ukuthi basebenzise i-drill eqinile ukuze babeke kahle kuhlale kuyisu lokuwina.
I-aspect ratio ikuthinta kanjani ukukhiqizwa kwe-PCB nokukhetha kokubhoboza?
I-aspect ratio isilinganiso sobukhulu bebhodi buphelele kububanzi bembobo ekhethiwe. Lesi silinganiso esithile sidlala indima ebalulekile esigabeni esilandelayo se-copper plating. Isibonelo, uma unepuleti eliwugqinsi elingu-1.6 mm futhi usebenzisa i-drill engu-0.2 mm, i-aspect ratio yakho ngu-8:1. I-aspect ratio ephezulu emabhodini awugqinsi yenza kube nzima kakhulu ukunamathisela ngokuthembekile ithusi ngaphakathi kwembobo yokubhoboza ejulile. Uketshezi lwamakhemikhali luvele lube nzima ukugeleza phakathi kwama-diameter amancane kangako.
Njengomthetho ojwayelekile wesithupha, kufanele ugcine ukubukeka kwakho kwesilinganiselo kungaphansi kuka-10:1 ukuze uqinisekise ukukhiqiza okuthembekile. Uma i-aspect ratio iba phezulu kakhulu, i-drill ngokwayo iyazabalaza ukususa ama-chips asikiwe emgodini wokubhoboza ojulile. Ama-chips apakishwa emitshingoni yokubhoboza. Lokhu kungqubuzana kushisa i-drill ngokushesha, kuncibilikisa i-epoxy resin ngaphakathi kwebhodi lesifunda eliphrintiwe.
Ukuze ugweme lo monakalo oshisayo, abaklami kumele bakhulise ngamabomu ububanzi bembobo noma bakhethe ukusebenzisa ipuleti elincane. Ukulinganisa i-aspect ratio kuqinisekisa ukuthi imbobo ngayinye yokubhoboza ithola ithusi elanele ngaphakathi ukuze kwakheke umjikelezo oqinile, osebenzayo. Izimbobo ezincane zinzima ukuzipuleti, ngakho hlala ucabanga ngokujula uma ukhetha i-drill yakho.
Yiziphi usayizi wokubhoboza kanye nezidingo zokubhoboza zezingxenye zembobo?
Izingxenye zomgodi wokubhoboza zidinga ubukhulu obukhethekile bokubhola kanye nezidingo zokubhola. Awukwazi ukuqagela lobu bukhulu. Usayizi wokugcina wembobo kufanele uvumelane kalula nengxenye ebonakalayo yokuhola, futhi ushiye indawo eyanele yenqubo yokucwenga ithusi. Uma ububanzi bembobo buqinile kakhulu, izisebenzi zomhlangano zizozabalaza ngokufaka okubushelelezi kanye ne-soldering yezingxenye. Ububanzi be-drill bunquma ukuthi ingxenye iwela kalula kangakanani epuletini.
Ukuze ubale lokhu ngendlela efanele, thatha ubukhulu bobubanzi bomthofu obonakalayo kudathabhethi bese wengeza imvume yokuphepha. Ngokuvamile, wenza imbobo yokubhoboza eqondiwe ibe ngu-0.3 mm ibe mkhulu kunomthofu wengxenye yangempela. Isibonelo, uma i-resistor esindayo inokuhola okungu-0.4 mm, kufanele nakanjani usebenzise i-drill engu-0.7 mm ukwenza imbobo.
Uma ingxenye encane inomthofu ongu-0.3 mm, sebenzisa i-drill engu-0.6 mm. Lesi zibalo esiqinile siqinisekisa ukuthi ingxenye yomthofu ilingana kahle ngemva kokuphonswa kwethusi sekuqedwe ngokuphelele. Ukunikeza imvume eyanele yezingxenye zembobo kuvimbela ukuqaqamba kwekhanda lokuhlangana futhi kunciphisa ukusebenza kabusha okubizayo phansi kwefekthri. I-drill efanele ivimbela umthofu ukuthi ungabhibhi ngesikhathi sokufakwa.
Abaklami be-PCB bakhetha kanjani i-diameter yembobo efanele ye-vias?
Abaklami be-PCB basebenzisa izakhiwo ezincane ezibizwa nge-vias ukuze baxhumanise izendlalelo ezihlukene zebhodi elinezingqimba eziningi ndawonye. Njengoba ama-vias awabambi noma yimuphi umthofu wengxenye yomzimba, ububanzi bembobo yabo bungaba buncane kakhulu kunezimbobo ezifakwayo ezijwayelekile. Ama-vias ajwayelekile ngokuvamile asebenzisa i-0.3 mm, i-0.4 mm, noma i-drill engu-0.6 mm. Ukugcina ububanzi bembobo buhambisana kahle kuyo yonke idizayini yakho kwenza inqubo yokumba ibe lula kakhulu futhi kusiza ekwehliseni izindleko embonini yokukhiqiza.
Kodwa-ke, imiklamo enesivinini esikhulu idinga ukunakwa okukhethekile kakhulu. Idayamitha yembobo enkulu ingasebenza njenge-antenna encane, idale amandla e-parasitic okonakalisa ubuqotho besignali obuthambile. Ngakho-ke, abaklami be-pcb bahlale bezama ukusebenzisa i-drill encane kakhulu yalezi zindlela ezibucayi zomzila. Ukubhola okuncane ngokwemvelo kuthuthukisa ubuqotho besignali kusekethe enezendlalelo eziningi.
Kufanele uhlale ulinganisela lokhu buqotho besignali namandla okukhiqiza ajwayelekile esitolo sakho. Osayizi bokubhola abangaguquguquki bazo zonke izindlela zakho ezingabalulekile baqinisekisa ukuthi isifunda sakho sisebenza ngokungenasici kuyilapho sihlala sikhiqizeka kakhulu. Umklami ohlakaniphile wazi kahle ukuthi iyiphi i-drill okufanele ayibize ngendawo ngayinye yesignali ethile.
Kufanele usebenzise nini i-laser drilling esikhundleni sokubhola ngomshini?
Ubuchwepheshe bokubhola bemishini bugcina bushaye udonga oluphathekayo olunezimbobo ezincane kakhulu. Uma ubukhulu bembobo yakho behla ngaphansi kuka-0.1 mm kuya ku-0.2 mm, umshini awukwazi ukusebenzisa ibhithi lensimbi. Kulesi sikali se-microscopic, i-drill bit ibuthakathaka kakhulu ukuthi ingakhiqizwa ngesivinini esikhulu. Yilapho kanye ukumba nge-laser kuthatha umsebenzi. Ama-Lasers asebenzisa imishayo yokukhanya egxile kakhulu ukuze ashise imbobo yokubhoboza ngokuqondile ezintweni zebhodi lesifunda eliphrintiwe.
Ukubhola nge-laser kubaluleke kakhulu ekudaleni ama-micro-vias kumabhodi e-hdi ethuthukisiwe (High-Density Interconnect) amabhodi. Ngenkathi umshini wokugaya we-pcb ojwayelekile usika yonke indlela epuletini eliwugqinsi, i-laser ingeye-micro-vias enwebeka kuphela isendlalelo esisodwa noma ezimbili ezizacile. Ngenxa yokuthi izimpumputhe nezingcwatshiwe zisebenzisa amalaser, azingeni kulo lonke ibhodi.
Ama-Lasers angahwamulisa ingilazi futhi enze inhlaka ngokushesha ngaphandle kokulimaza i-copper pad engaphansi. Nokho, xwayiswa: ukubhola nge-laser kuzonyusa izindleko zokukhiqiza ngokuphawulekayo uma kuqhathaniswa nokuphusha umshini wokubhoboza ojwayelekile ebhodini. Ngakho-ke, kufanele usebenzise kuphela i-laser drilling kuma-micro-vias lapho indawo yomzila epuletini ivinjelwe ngokuphelele kuma-electronics akho ahlangene.
Yimuphi umehluko phakathi kwezinhlobo zezimbobo zokubhoboza ezipuletiwe nezingafakwanga?
Ekukhiqizeni i-pcb evamile, uzohlale uhlangabezana nezinhlobo ezimbili eziyinhloko zemigodi: ama-pths (Ahlanganiswe Ngezimbobo) kanye nama-npths (Angagxiliwe Ngezimbobo). I-pth imbobo yokubhoboza ethola ukufakwa kwethusi esindayo ezindongeni zayo zangaphakathi ukuze kuhanjiswe ugesi ukusuka phezulu ukuya phansi. Ama-vias amaningi kanye nezimbobo eziklanyelwe izingxenye ze- through-hole ziyi-pths.
Ngakolunye uhlangothi, imbobo engagqitshiwe, noma i-npth, imane nje iyimbobo engenalutho ebhobozwe iqonde epuletini eliqediwe elingenakho nhlobo ngaphakathi. Izimbobo ezifakwa ngomshini ngokuvamile ziyi-npths. Uma imboni ilungiselela ukubhoboza i-pth, kufanele isebenzise umshini wokubhoboza othe ukudlula usayizi wokugcina wembobo oceliwe, ngoba i-copper plating yengeza ukujiya futhi izonciphisa ububanzi bokugcina.
I-npth, nokho, ibhobolwa kusayizi wayo webhithi oqondile khona kanye ekupheleni kwenqubo. Kunoma iyiphi imbobo yokubhoboza engasindi, kufanele njalo ugcine indawo evulekile phakathi konqenqema lwembobo nanoma yimiphi imikhondo yesekethe ebukhoma eseduze. Lokhu kususwa okubalulekile kuvimbela izikulufu zensimbi ukuthi zingafinyeleli kumjikelezo osebenzayo lapho zidlula kuma-npths ukukhweza ibhodi ku-chassis.
Ukuqonda i-drill encane kungawuthuthukisa kanjani umklamo wakho futhi kwehlise nezindleko?
Ngokuqonda imikhawulo yosayizi omncane wokubhoboza womkhiqizi oyikhethile we-pcb, uvula ithuluzi lakho elingcono kakhulu lokonga izindleko. Uma uklama ibhodi elinezimbobo ezingu-0.15 mm, kodwa imboni yakho ikhokhisa imali enkulu ngokumba noma yini engaphansi kuka-0.2 mm, uvele umosha imali. Ngokukhulisa lezo zimbobo ezithile zibe ngu-0.2 mm noma ngisho no-0.3 mm, unciphisa izindleko ngokushesha. Kufanele ngaso sonke isikhathi usebenzise izimbobo ezinkulu uma kungenzeka ukuze wenze yonke inqubo yokumba ingabizi futhi isheshe.
Ngaphezu kwalokho, kufanele unamathele kumasayizi ajwayelekile okubhola kuyo yonke iphrojekthi yakho. Esikhundleni sokusebenzisa ingxube engahleliwe, engcolile engu-0.65 mm, 0.68 mm, nezimbobo ezingu-0.7 mm, vele uzihlanganise zonke ekubholeni okujwayelekile okungu-0.7 mm. Ukuhlanganisa osayizi be-drill ngokunengqondo kusho ukuthi umshini we-CNC uyama izikhathi ezimbalwa ukuze ushintshe umshini wokubhola.
Kwa-Drillstar, sinikeza ukunemba okuphezulu Izinduku ze-Tungsten Carbide eziqinile kubenzi bamathuluzi ikakhulukazi ngoba sazi kahle ukuthi i-drill ebukhali, ehlala isikhathi eside ibaluleke kangakanani ekugcineni inqubo yokumba isebenza kahle. Futhi, ukutshala imali endaweni efanele I-Drill Bit Grinding Machine isiza izitolo ezinevolumu ephezulu zigcine imiphetho ebukhali ekuziqeqesheni kwazo. Lungiselela idizayini yakho ngokucabanga ncamashi njengengcweti yemishini ezosebenzisa umshini wokuprakthiza.
Ukuqinisekisa ukuthi idizayini yakho ye-pcb iyaphumelela emugqeni womhlangano, sebenzisa indlela ehlelekile kakhulu yokukhetha yonke i-diameter yokubhola eyodwa. Ngaso sonke isikhathi shiya u-0.1 mm ukuze uthole imikhondo emincane futhi ushiye u-0.2 mm ukuze uthole imikhondo emikhulu lapho ulinganisa izimbobo zezingxenye zakho zembobo, noma ezinkulu nakakhulu uma kudingeka ukuze uqinisekise ukulingana okushelelayo. Le majini encane isiza isiqinisekiso sokuthi umthofu uzoshelela ungene kahle, noma ngabe i-copper plating ijiyile kunalokho obekulindelwe yifekthri. Ukulingana okuqinile kuhlala kungalungile ngesikhathi sokuhlanganiswa okuzenzakalelayo.
Njalo hlola imithetho yokuklama eshicilelwe imboni yakho. Qinisekisa usayizi wembobo oyikhethile ngokumelene nemikhawulo yesici sesilinganiso semboni, ikakhulukazi uma udizayina amabhodi awugqinsi. Qinisekisa ukuthi zonke izintambo zakho zinezindandatho zethusi ezanele ezizungeze imbobo yokubhoboza. Uma i-drill izulazula kancane phakathi nendawo, indandatho yethusi encane izophuka, yonakalise ngokuphelele isifunda.
Ukulinganisa okufanelekile kokubhoboza kuqinisekisa ukuqhubeka kukagesi okuthembekile kulo lonke ipuleti. Ngokwazi kahle lezi zidingo ezibalulekile zokubhola kanye nezidingo zokubhola, uqinisekisa ukuthi izinto zikagesi azizona nje ezisezingeni eliphezulu kodwa futhi zikhiqizwa kakhulu emhlabeni wangempela. Isu lokubhola elihlakaniphile lakha ipuleti elihle, elithembekile! Kusukela ku-micro-drill encane kuya kwesindayoI-Cemented Carbide Insert esetshenziselwa umshini we-chassis, ukunemba kwamathuluzi ukushaya kwenhliziyo kokukhiqizwa kwe-electronics yesimanje.
Isifinyezo: Okubalulekile Okumele Uzikhumbule
- I-Carbide iyinkosi: I-PCB drill ejwayelekile yenziwe nge-carbide eqinile ukuze imelane nepuleti le-fiberglass elibi kakhulu.
- Yazi Imikhawulo Yakho: Usayizi omncane wokubhoboza otholakalayo ubeka ukuminyana komzila wakho; ukuhamba kancane kuzonyusa izindleko zokukhiqiza futhi kuphule umshini wokubhoboza.
- Ukunemba Okubalulekile: Imbobo encane yokubhoboza idinga ukubekezelelana okuqinile ukuze uqiniseke ukuthi i-drill ayizuli futhi ihlukanisa isekethe.
- Qaphela I-Aspect Ratio: Imigodi ejulile emabhodini awugqinsi kunzima ukuyipuleta; gcina isilinganiso esingaphansi kwe-10: 1 ukuze uqinisekise ukumbozwa kwethusi okuthembekile ngaphakathi komgodi.
- Ukusulwa kwengxenye: Ngaso sonke isikhathi yenza imbobo yokubhoboza okungenani ibe ngu-0.3 mm ibe mkhulu kunomthofu wengxenye ukuze uvumele ukufakwa nokunamathela ngokushelelayo.
- Nge-Vias vs. Mounting: Sebenzisa i-drill encane ye-vias ukuze uvikele ubuqotho besignali, kodwa sebenzisa i-drill enkulu ye-npths ukuze uthwale izingxenyekazi zekhompuyutha ngokuphephile.
- Lungiselela Ukulondoloza: Namathela kumasayizi ajwayelekile ukuze unciphise izinguquko zamathuluzi futhi ugweme izingibe ezivamile ngesikhathi sokukhiqiza ukuze i-pcb yakho yenze njengoba kuhlosiwe.
