Rov qab lub tshuab khiav yog qhov tshwj xeeb ntawm kev tswj qhov tob. Hauv kev tsim cov ntau txheej, xws li kev tsim tawm ntawm 20 txheej pob tw, nws yog ib qho tsim nyog los txuas thawj txheej txheej rau lub kaum txheej. Feem ntau, peb tho los ntawm qhov (thaum drilling), thiab tom qab ntawd xaws tooj liab thiab electroplating. Nyob rau hauv txoj kev no, thawj txheej yog txuas ncaj qha rau cov txheej txheej 20th. Nyob rau hauv kev muaj tiag, peb tsuas yog xav tau txuas thawj txheej txheej rau 10 Txheej Txheej. Lub 11th txog 20 txheej 20 yog zoo li cov ncej uas tsis muaj cov xov hlau sib txuas. Cov ncej no cuam tshuam rau cov teeb liab txoj hauv kev thiab tuaj yeem ua rau cov teeb liab muaj teeb meem hauv cov paib kev sib txuas lus. Txhawm rau tshem tawm cov ncej no (lub npe hu ua txiv ntoo hauv kev lag luam) los ntawm sab nraum qab (sab nraud los drilling.
(Daim duab 1)
Txawm li cas los xij, vim yog etching ntawm qee tus tooj liab hauv cov txheej txheem tom ntej, thiab qhov tseeb tias lub laum muaj qhov tseeb ntawm lub riging rig, nws feem ntau tsis yog li qub. Yog li ntawd, ib tug me me margin yuav tawm hauv qab drilling, thiab qhov ntev ntawm cov seem uas tshuav yog hu ua cov qij, uas feem ntau nyob rau hauv ntau ntawm {{um. Yog tias nws luv luv heev, qhov nyuaj ntawm kev tswj ntau lawm yuav nce ntxiv, uas tuaj yeem ua rau qhov yooj yim ua rau qhov tob tsis zoo. Yog tias nws yog ntev dhau lawm, rau / tua yuav tsis muaj kev cuam tshuam, tab sis nws yuav cuam tshuam rau kev ncua sijhawm ntawm lub teeb liab. Raws li qhia hauv (daim duab 1)
Dab tsi yog qhov zoo thiab kev ua haujlwm ntawm rov qab drilling
Txoj haujlwm ntawm lub laum tom qab yog mus laum tawm los ntawm cov ntu kis uas tsis muaj kev sib txuas, kev ncua, thiab lwm yam tuaj yeem ua rau "distortion" ntawm lub teeb liab. Kev tshawb fawb tau pom tias cov ntsiab lus tseem ceeb cuam tshuam rau lub teeb liab kev ncaj ncees ntawm cov teeb liab, txuas ntxiv rau kev tsim qauv, ntxiv rau ntawm cov teeb liab kev ncaj ncees ntawm cov qhov.
1. Txo cov hluav taws xob muaj suab nrov thiab txhim kho Circuit Court
2. Txhim Kho Kev Cim Npe
3. Sib npaug rau cov kev tswj kev tswj hwm thiab kev siv tshuab muaj zog, ua rau txo qis hauv zos phaj tuab
4. Siv rov qab drilling kom ua tiav qhov muag tsis pom kev, txo cov kev nyuaj ntawm lub qhov muag ntau lawm, thiab txo cov sijhawm nias lub sijhawm, thiab lwm yam
Ua haujlwm ua haujlwm ntawm rov qab drilling ntau lawm
Los ntawm kev vam khom rau micro tam sim no tau tsim thaum lub laum taub tus neeg tooj liab lub sij hawm rastrate nto yog hnov, thiab tom qab ntawd drilling yog nqa tawm raws li kev teeb tsa qhov chaw teeb txiav. Thaum lub qhov tob tob tau mus txog, lub drilling nres. Raws li qhia hauv (Daim duab 2)
(Daim duab 2)
Cov txheej txheem yooj yim ntawm rov qab drilling ntau lawm
Txheej Txheem 1: Ib Txoj Kev Drilling → Tooj CNC Plating → Rov Qab Drilling → Tin Tshem Tawm → Resin Plug Lub Ziab
Txheej Txheem 2: Thawj Drilling → Circuit Coadplating → Txawv Electroplating → Rov Qab Drilling → etching → Post Program
Cov txheej txheem tshwj xeeb tshaj plaws ntawm rov qab tshuab txiav
| Muaj pes tsawg tus lej | tus yam ntxwv | Muaj pes tsawg tus lej | tus yam ntxwv |
| 1 | Feem ntau ntawm lawv yog cov camts nyuaj, thiab tam sim no tseem muaj cov khoom siv mos nyuaj siv cov txheej txheem no | 2 | Tus naj npawb ntawm cov khaubncaws sab nraud povtseg feem ntau muaj ntau dua los yog sib npaug rau 8 |
| 3 | Phaj tuab: ntau dua los yog sib npaug rau 2.5mm | 4 | Cov tuab tuab rau txoj kab uas hla hluav taws xob yog tus loj dua, feem ntau ntau dua lossis sib npaug rau 8: 1 |
| 5 | Cov thawj coj loj yog qhov loj | 6 | Feem ntau, qhov tsawg kawg nkaus aperture ntawm lub qhov tho yog tsawg dua lossis sib npaug rau 0. 3 hli |
| 7 | Rov qab drilling qhov yog feem ntau 0. 2mm loj dua li cov qhov uas yuav tsum tau ua kom tiav (raws li qhia hauv daim duab 3) | 8 | Rov Qab Drilling Qhov tob Ua: + -0. 05mm |
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Yog tias txoj kev ua haujlwm rov qab yuav tsum drilling mus rau m txheej, qhov tsawg kawg nkaus ntawm lub m {{{{0 (} (master) txheej) yog 0.15 hli |
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Kev Nyab Xeeb Kev Nyab Xeeb: Qhov kev ncua deb ntawm ntug ntawm lub qhov tom qab drilling thiab cov xaim hluav taws xob ib puag ncig lossis sib npaug}. 25mm (raws li qhia hauv daim duab 4) |
(Daim duab 3) (Daim Duab 4)
Uniwell circluits backdrilling muaj peev xwm thiab sib faib
| Muaj pes tsawg tus lej | Txheej Txheem Project | Muaj Peev Xwm Cov Ntaub Ntawv |
| 1 | Lub thinnest thickness ntawm sab nraum qab drilling txheej | Ib txwm muaj ntau dua lossis sib npaug rau {{{0}}}. 1 hli, ntau tshaj plaws ntawm tuab 0.065mm |
| 2 |
Kev mloog zoo ntawm ib lub qhov tho thiab rov qab tho qhov | +/- 0. 05mm |
| 3 | Rov qab DRRADING STUB | {{0 {0}}. {025-0. 15 hli |
| 4 | Yam tsawg kawg rov qab drilling qhov | 0. 2 hli |
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Kev tshem |
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Cov txheej txheem backdrilling hom | Rov qab laum + Raum ntsaws lub qhov, rov qab laum + npog tov |
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Txhim kho ntawm backdrilling technology |
Nqis rov qab laum, muaj peev xwm ntawm kev sib cais ntawm qhov sib txawv |
Peb lub tuam txhab cov zaub ntawm ib co laum cov khoom:
Kev txhim kho kev txhim kho loj thiab cov ntawv thov tseem ceeb ntawm kev siv tshuab drilling
Vim tias tus cawv ntawm cov kev sib tw nqus dej, cov khoom siv burrs, lub siab muaj qee cov npoo sab xis, thiab tsis tuaj yeem ua tiav qhov zoo tagnrho 0 stub. Qee cov khoom siv cov khoom lag luam hauv kev lag luam tau pib txhim kho cov hau kev xws li kev xaiv cov qhov ncauj qhov ntswg kom ua tiav 0 stub (raws li qhia hauv daim duab 5). Peb ntseeg tias yuav muaj kev sib cav ntau thev naus laus zis hauv lub neej yav tom ntej kom tiv thaiv kev txhim kho ntawm Circuit Court boards.
Lub ntsiab ntawv thov cov xwm txheej ntawm PCB rov qab sib txuas lus, cov ntaub ntawv kho mob, thiab tub rog ib qho kev ntsuas nruj thiab kev ua haujlwm nruj. Nws cov ntsiab lus tseem ceeb nyob rau hauv kev txhim kho cov cuab yeej kev ntseeg tau los ntawm kev ua kom pom kev ntsuas cov cim tsis zoo.
