Nrog rau txoj kev loj hlob ntawm kev lag luam cov ntaub ntawv hluav taws xob, cov khoom siv hluav taws xob hauv cov khoom siv hluav taws xob muaj ntau dua thiab ntau dua rau kev ua kom zoo dua qub PCB kev lag luam. Drilling yog ib kauj ruam tseem ceeb hauv kev tsim PCB, uas tau tsim kom muaj qhov tsawg kawg nkaus txoj kab uas hla ntawm 0.08mm, qhov siab tshaj plaws qhov sib nrug ntawm 0.1mm lossis ntau dua. Ntxiv rau qhov ua qhov, qhov qhov, qhov zawj, qhov tshwj xeeb zoo li lub qhov, phaj puab, thiab lwm yam, txhua yam yuav tsum tau kuaj xyuas. Yuav ua li cas txhawm rau txhawm rau qhov zoo ntawm PCB pawg thawj coj saib kom zoo thiab raug tau dhau los ua qhov txuas tseem ceeb los xyuas kom meej cov khoom zoo. PCB qhov tshuaj xyuas lub tshuab tsuas yog ib qho khoom siv kho qhov muag tsis siv neeg siv hauv kev tshuaj xyuas zoo ntawm drilling. Lub hom phiaj ntawm daim ntawv no yog txhawm rau txheeb xyuas qhov ua haujlwm ntawm lub tshuab kuaj lub qhov hauv cov txheej txheem drilling thiab muab kev paub siv rau PCB cov tuam txhab.

Hauv cov txheej txheem PCB drilling, nws yog ib qho tsim nyog los tswj cov teeb meem zoo hauv qab no: porosity, leakage, displacement, tsis ncaj ncees lawm drilling, tsis nkag mus, qhov poob, pov tseg, pem hauv ntej, plug qhov. Tam sim no, txoj kev tswj hwm ntawm ntau cov tuam txhab lag luam feem ntau yog tsim cov txheej txheem drilling ua ntej drilling thiab ntxiv dag zog rau kev tshuaj xyuas txhais tau tias tom qab drilling. In actual production, because the pre-drilling method can only reduce the probability of error, can not completely eliminate, we must rely on post-drilling inspection to ensure product quality.

In the post-drilling inspection, many domestic manufacturers are still using the plug gauge combined with artificial visual film (film) set inspection method: through the plug gauge focus on checking the hole, hole small, through the film focus on porous, leaky hole, shift, not through, not through, other hole damage, front, hole plug through artificial visual to complete. Hauv kev siv cov tshuaj ntsuam xyuas zaj duab xis, txhua yam khoom siv drilling xyaum ua cov yeeb yaj kiab liab, kev tshuaj xyuas los ntawm tus pin thiab cov khoom phaj tsau, phau ntawv qhia kev tshuaj xyuas hauv qab lub teeb lub thawv. In theory, this method can detect all kinds of defects, but in practice, the effect is greatly discounted.

Cov teeb meem tseem ceeb yog raws li nram no:

Ua ntej, cov kev soj ntsuam ntawm me me aperture tsis tuaj yeem lav tau: kev xyaum ntau lawm qhia tau hais tias rau PCB nrog qhov tsawg kawg nkaus aperture ≥0.5mm, phau ntawv tuaj yeem ua tiav cov txiaj ntsig tshuaj xyuas ntau dua nyob rau hauv qhov chaw ntawm kev ua kom muaj kev ua haujlwm zoo. This is determined by the minimum discernable visual Angle of the human eye, the working distance, and the attention span. Nrog rau qhov txo qis ntawm aperture loj, rau cov khoom phaj hauv qab 0.5 hli, lub peev xwm tshuaj xyuas ntawm tib neeg lub qhov muag yuav poob sai sai, rau cov khoom phaj ≤0.25mm, phau ntawv txawm tias cov qauv zoo yog qhov nyuaj los xyuas kom meej.

Qhov thib ob, qhov ua tau zoo ntawm kev tshuaj xyuas phau ntawv tsuas yog txwv: qhov ua tau zoo ntawm kev tshuaj xyuas phau ntawv yog ncaj qha ntsig txog tus naj npawb ntawm qhov thiab qhov tsawg kawg nkaus aperture. Qhov kev tsim khoom tiag tiag qhia tau tias qhov ua tau zoo yuav txo qis thaum lub qhov ntau dua 10000 thiab qhov tsawg tshaj plaws yog tsawg dua 0.5 hli. Kev tshuaj xyuas phau ntawv tsuas yog tsim nyog rau kev kuaj. Rau siab ceev phaj, nws yog tsis yooj yim sua kom lav qhov zoo ntawm drilling los ntawm phau ntawv.

Thib peb, kev ruaj ntseg ntawm kev ua tau zoo tsis tuaj yeem lav tau: cov neeg yuav raug cuam tshuam los ntawm kev paub dhau los, mus ob peb vas, qaug zog, lub luag haujlwm thiab lwm yam, nws yog ib qho nyuaj rau kev ruaj ntseg zoo. Some manufacturers can not use multiple artificial, repeated inspection method, but still can not ensure the stability of quality.

Txhawm rau daws cov teeb meem saum toj no, ntau lub tuam txhab LARGE PCB tau txais qhov kev tshuaj xyuas qhov AOI cov cuab yeej los hloov cov neeg ua haujlwm hauv ntau yam. Tshwj xeeb tshaj yog rau cov lag luam Nyij Pooj thiab Taiwan nyiaj txiag, ntau xyoo ntawm kev xyaum tau ua pov thawj qhov ua tau zoo ntawm txoj kev tshiab no, uas tsim nyog rau kev saib xyuas thiab siv los ntawm ntau lub tuam txhab PCB.

AOI qhov tshuaj xyuas cov cuab yeej belongs rau cov khoom siv kho qhov muag tsis siv neeg. Raws li daim duab daim ntawv ntawm ntau yam tsis xws luag ntawm drilling, nws tuaj yeem muab faib ua: ntxeem tau, qhov tsawg dua, qhov loj, qhov me, qhov seem, qhov sib txawv thiab lub qhov zoo. Nws tau muab faib ua ob hom: ib qho yog Lub Tshuab Tshuaj Ntsuam Xyuas, lwm qhov yog qhov ntsuas qhov thiab tshuaj xyuas tshuab (lub qhov-AOI). Nyob rau hauv kev xyaum, kuj muaj ib tug X-ray soj ntsuam tshuab, uas yog tsuas yog siv rau kev soj ntsuam ntawm faus qhov muag tsis pom qhov thiab multi-txheej boards, uas yog inconsistent nrog lub hom phiaj ntawm phau ntawv phau ntawv zaj duab xis tsho tshuaj xyuas thiab tsis koom nyob rau hauv kev tsom xam ntawm daim ntawv no.

Raws li PCB cov tuam txhab cov khoom siv sib txuam, nws raug nquahu kom siv ntau qhov kev kuaj xyuas lub tshuab rau kev tshuaj xyuas tag nrho ntawm thawj phaj thiab hauv qab phaj, tsom rau kev tshuaj xyuas cov qhov, ob peb qhov, qhov loj, qhov me me thiab cov khib nyiab; Lub qhov chaw ntsuas thiab ntsuas tshuab yog siv rau qhov chaw kuaj xyuas, tsom rau qhov sib txawv ntawm qhov. Cov yam ntxwv ntawm ob lub cuab yeej yog raws li hauv qab no:

Lub tshuab kuaj xyuas qhov zoo: qhov zoo yog tus nqi qis, kev soj ntsuam ceev ceev, xyuas 600mm × 600mm PCB nruab nrab ntawm 6 ~ 7 vib nas this, tuaj yeem paub qhov ntxeem tau, qhov tsawg, qhov, qhov me me, kev tshuaj xyuas seem. Qhov tsis zoo yog tias muaj peev xwm txheeb xyuas qhov chaw ntawm lub qhov tsis siab, thiab tsuas yog qhov tsis xws luag tuaj yeem kuaj pom. Raws li cov chaw tsim khoom qhov kev tsim khoom tiag tiag, feem ntau 15 RIGS tau nruab nrog 1 lub qhov ntsuas tshuab.

Qhov chaw ntsuas thiab kuaj tshuab: qhov zoo dua yog tias txhua yam tuaj yeem kuaj xyuas. Qhov tsis zoo yog tias tus nqi siab (kwv yees li 3 ~ 4 npaug ntawm lub tshuab tshuaj xyuas lub qhov), qhov kev tshuaj xyuas tsis zoo, nws yuav siv sijhawm ob peb feeb lossis ntev dua los kuaj 1 daim. It is generally recommended to configure one machine for product sampling inspection to supplement the deficiency of hole checking machine for hole position inspection.

Inspection principle of hole inspection AOI equipment: PCB drilling image is collected by optical system, and compared with the design document (drill tape file or Gerber file). If the two are consistent, it indicates that the drilling is correct; otherwise, it indicates that there is a problem in the drilling, and then analyze and classify the defect type according to the image morphology. Cov cuab yeej tshuaj xyuas lub qhov yog muab piv nrog cov qauv tsim cov ntaub ntawv ntawm qhov drilling, thiab phau ntawv kev tshuaj ntsuam xyuas yog muab piv nrog cov yeeb yaj kiab. Nyob rau hauv cov nqe lus ntawm lub hauv paus ntsiab lus ntawm kev soj ntsuam, cov teeb meem tshwm sim los ntawm cov zaj duab xis drilling yuam kev yuav zam tau, thiab kev ntseeg siab yog siab dua.

PCB qhov ntsuas tshuab tshuab tsom xam

Lub luag haujlwm ntawm lub tshuab kuaj lub qhov ntawm PCB drilling txheej txheem yog xav txog hauv qab no:

Ua ntej, ua haujlwm zoo thiab ruaj khov drilling zoo tshuaj xyuas:

Kev tshuaj xyuas niaj hnub: ntxeem tau, tsis tshua muaj qhov ntxeem tau, qhov loj, qhov me me thiab cov khib nyiab tsis xws luag tuaj yeem tshawb xyuas ib txhij ntawm qhov ceev ntawm qhov tsawg kawg nkaus aperture 0.15mm thiab 8m / min, thiab qhov chaw tsis xws luag yog cim thiab cov duab tsis xws luag raug tshuaj xyuas los muab kev txiav txim siab ntawm phau ntawv. .

Kev tshuaj xyuas cov khib nyiab: hauv thawj qhov kev tshuaj ntsuam xyuas, cov khib nyiab tsis yog qhov tseem ceeb tshaj plaws; Tab sis ua ntej electroplating, cov khib nyiab yuav tsum ua kom txaus txaus. Txhawm rau txo qhov cuam tshuam ntawm cov khib nyiab ntawm qhov zoo ntawm cov nag lossis daus, PCB cov tuam txhab feem ntau tshem cov khib nyiab los ntawm kev sib tsoo thiab ntxuav ua ntej electroplating, tab sis nyob rau hauv kev xyaum, nws tseem tsis tau 100% huv si, qhov ntau ceev phaj ntxuav cov nyhuv yog phem dua. Raws li txoj cai, muaj cov khoom seem hauv txhua PCB, yog li nws tsis tuaj yeem kuaj xyuas tag nrho cov qhov ntawm txhua yam khoom, cia siab rau kev tshuaj xyuas qhov muag, tab sis lub tshuab tshuaj xyuas lub qhov ua tau.

Quality improvement: stability is the biggest advantage of equipment, stable product quality can enhance the brand influence of PCB factory, directly improve the ability of manufacturers to receive orders.

Thib ob, pab tsim khoom thiab ua haujlwm zoo hauv kev txheeb xyuas cov ntaub ntawv:

Kev tsom xam cov cuab yeej: nws tuaj yeem txheeb xyuas qhov sib txawv nruab nrab ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov cuab yeej drilling hauv PCB, saib xyuas cov cuab yeej drilling tau nyob rau lub sijhawm, nrhiav qhov teeb meem tsis raug ntawm lub sijhawm, thiab zam batch khib nyiab daim hlau.

Kev tsom xam muaj peev xwm: nws tuaj yeem sau txhua hnub, txhua hli, peb lub hlis twg thiab txhua xyoo muaj peev xwm tsim tau thiab qhov nruab nrab ntawm kev tsim khoom, muab cov ntaub ntawv txheeb xyuas rau ntau txoj hauv kev tswj, thiab txhim kho lub Hoobkas kev ua haujlwm thiab kev tswj xyuas muaj peev xwm.

Kev txheeb xyuas tshuab: tuaj yeem suav cov zis, ntau yam thiab cov teeb meem zoo ntawm txhua lub rig, txhim kho lub peev xwm los tswj cov ntsiab lus ntawm lub tshuab.

Thib peb, tus nqi txuag, siab input-tso zis piv:

Kev soj ntsuam cov neeg ua haujlwm: ntawm qhov chaw ua kom ntseeg tau zoo thiab txhim kho kev ua haujlwm, 2 ~ 3 tus neeg soj ntsuam tuaj yeem txuag tau qhov nruab nrab los ntawm lub tshuab tshuaj xyuas lub qhov.

Cov khoom siv raw: nws tuaj yeem txuag cov khoom siv ntawm cov nqi ntawm cov yeeb yaj kiab, uas muaj txiaj ntsig zoo rau cov chaw tsim khoom nruab nrab thiab me me.

Customer complaint: it can save the cost of return order and fine caused by drilling defects. Although it is not as direct as the personnel and materials saved, the average annual cost saved is even higher than the purchasing cost of hole inspection machine.

Nrog rau cov tuam txhab PCB cov kev xav tau zoo dua rau cov txheej txheem drilling, nyob rau hauv lub siab ntawm kev nce nqi zog thiab maj mam tsis muaj peev xwm tshuaj xyuas phau ntawv, qhov tseem ceeb ntawm lub tshuab tshuaj xyuas lub qhov yog qhov pom tseeb.

Kev siv lub tshuab tshuaj xyuas lub qhov tau ntau tshaj kaum xyoo, kev ua haujlwm thiab kev ua haujlwm ntawm cov cuab yeej tau txhim kho tas li, thiab kev koom tes nrog kev tsim khoom yog ntau dua thiab ze dua. Tshwj xeeb tshaj yog nrog txoj kev loj hlob sai ntawm high-density board, lub tshuab tshuaj xyuas lub qhov tau maj mam hloov los ntawm cov cuab yeej pabcuam thawj zaug rau hauv cov cuab yeej txhawb nqa tseem ceeb. Nyob rau hauv cov cuab yeej hloov pauv ntawm ntau PCB cov nroj tsuag qub thiab kev npaj cov nroj tsuag tshiab, qhov nrov ntawm cov cuab yeej siv lub tshuab ntsuas qhov yuav muaj ntau dua thiab siab dua.