Qhov zoo tshaj plaws Technology yog ib qho zoo tshaj plaws pcb tuam ntxhab thiab cov khoom lag luam luam tawm hauv Suav teb
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Qhov zoo tshaj plaws Technology yog ib qho zoo tshaj plaws pcb tuam ntxhab thiab cov khoom lag luam luam tawm hauv Suav teb
Thaum nws los txog rau lub qhov hauv PCBs (Printed Circuit Boards), tej zaum ib tug neeg yuav xav paub txog ob qhov tshwj xeeb: Counterbore qhov thiab Countersunk qhov. Lawv yooj yim kom tsis meej pem thiab yooj yim rau kev nkag siab yog tias koj yog ib tug layman ntawm PCB. Niaj hnub no, peb yuav qhia txog qhov sib txawv ntawm counterbore thiab countersunk kom paub meej, cia peb nyeem!
Qhov Counterbore Hole yog dab tsi?
Lub qhov counterbore yog lub cylindrical recess ntawm PCB uas muaj ib txoj kab uas hla loj dua nyob rau saum npoo thiab ib txoj kab me me rau hauv qab. Lub hom phiaj ntawm lub qhov counterbore yog tsim qhov chaw rau lub taub hau ntsia hlau los yog lub bolt lub flange, tso cai rau nws los zaum nrog los yog me ntsis hauv qab ntawm PCB nto. Qhov loj txoj kab uas hla ntawm sab saum toj haum rau lub taub hau los yog flange, thaum lub me me txoj kab uas hla kom paub meej tias lub fastener lub ncej los yog lub cev haum snugly.
Dab tsi yog Countersunk Qhov?
Ntawm qhov tod tes, lub qhov countersunk yog ib qho chaw so ntawm lub PCB uas tso cai rau lub taub hau ntawm cov ntsia hlau los yog ntsia liaj qhov rooj zaum nrog lub PCB nto. Cov duab ntawm lub qhov countersunk sib phim cov profile ntawm lub fastener lub taub hau, tsim kom muaj seamless thiab qib nto thaum lub hau ntswj los yog ntsia liaj qhov rooj yog tag nrho tso. Countersunk qhov feem ntau muaj lub kaum sab xis, feem ntau 82 lossis 90 degrees, uas txiav txim siab cov duab thiab qhov loj ntawm lub taub hau fastener uas yuav haum rau hauv qhov chaw so.
Counterbore VS Countersunk: Geometry
Thaum ob qho tib si counterbore thiab countersunk qhov ua haujlwm rau lub hom phiaj ntawm kev tuav cov fasteners, lawv qhov sib txawv tseem ceeb nyob rau hauv lawv cov geometry thiab hom fasteners lawv haum.
Counterbore qhov muaj ib lub cylindrical recess nrog ob txoj kab uas hla sib txawv, thaum countersunk qhov muaj ib tug conical recess nrog ib txoj kab uas hla.
Counterbore qhov tsim ib cheeb tsam stepped los yog tsa rau ntawm PCB nto, whereas countersunk qhov ua rau ib tug flush los yog recessed nto.
Counterbore VS Countersunk: Fastener Hom
Counterbore qhov feem ntau yog siv rau fasteners nrog lub taub hau los yog flange, xws li bolts los yog screws uas yuav tsum tau ib tug khoom mounting nto.
Countersunk qhov yog tsim los rau fasteners nrog lub taub hau conical, xws li flathead screws lossis countersunk bolts, kom ua tiav qhov dej ntws.
Counterbore VS Countersunk: Laum cov ces kaum
Ntau qhov ntau thiab tsawg thiab cov kaum sab xis ntawm cov khoom siv tho yog muab rau kev tsim cov txee, nyob ntawm qhov xav tau siv. Cov ces kaum no muaj xws li 120 °, 110 °, 100 °, 90 °, 82 °, thiab 60 °. Txawm li cas los xij, feem ntau ua haujlwm drilling kaum rau countersinking yog 82 ° thiab 90 °. Txhawm rau kom tau txais txiaj ntsig zoo, nws yog qhov tseem ceeb uas yuav tsum ua kom lub kaum sab xis ntawm lub txee nrog lub kaum sab xis ntawm lub hauv qab ntawm lub taub hau fastener. Ntawm qhov tod tes, counterbore qhov feature parallel sab thiab tsis tas yuav tapering.
Counterbore VS Countersunk: Daim ntawv thov
Qhov kev xaiv ntawm counterbore thiab countersunk qhov nyob ntawm qhov kev xav tau ntawm PCB tsim thiab cov khoom siv.
Counterbore qhov pom cov ntawv thov nyob rau hauv cov xwm txheej uas yuav tsum muaj kev ruaj ntseg thiab yaug cov khoom siv los yog cov phaj mounting yog tsim nyog. Lawv feem ntau yog siv los fasten connectors, brackets, los yog PCBs rau ib tug enclosure los yog chassis.
Countersunk qhov feem ntau ua haujlwm thaum kev xav txog kev zoo nkauj yog qhov tseem ceeb, vim lawv muab qhov zoo nkauj thiab qib. Lawv nquag siv rau mounting PCBs rau qhov chaw uas xav tau ib tug flush tiav, xws li nyob rau hauv cov khoom siv hluav taws xob los yog cov ntaub ntawv kho kom zoo nkauj.
Counterbore thiab countersunk qhov yog cov yam ntxwv tseem ceeb hauv PCB tsim, ua kom muaj txiaj ntsig zoo thiab ruaj ntseg fastening. Kev nkag siab txog qhov sib txawv ntawm ob hom ntawm qhov no tso cai rau cov neeg tsim qauv xaiv cov kev xaiv tsim nyog raws li cov kev cai tshwj xeeb ntawm lawv daim ntawv thov PCB. Txawm hais tias nws tau ua kom muaj kev sib txuas ruaj ntseg lossis ua tiav qhov pom kev zoo siab, qhov kev xaiv ntawm counterbore thiab countersunk qhov ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm tag nrho thiab kev zoo nkauj ntawm PCB los ua ke.
