PCB Positioning gomba chakakosha kwazvo chinongedzo muPCB dhizaini maitiro kuona nzvimbo chaiyo yePBB kuburikidza negomba. The role of the positioning hole is printed circuit board manufacturing processing benchmark. Pcb yekumisikidza gomba yekumisikidza nzira dzakasiyana siyana, kunyanya zvinoenderana nekusiyana kwakaringana zvinodiwa. Nzvimbo dzekumisikidza pamabhodhi edunhu dzakadhindwa dzinomiririrwa nemasaiti akajeka emifananidzo. When the requirements are not high, the larger assembly hole in the printed circuit board can be used instead.

Kuti zvive nyore kudhinda redunhu bhodhi kuchera uye yekugaya chimiro yakamisikidzwa bhodhi, pamwe nekureruka online kuyedza, mazhinji maseketi bhodhi vagadziri vanotarisira vashandisi kugadzira maburi matatu asiri esimbi paPCB, maburi ekumisikidza anowanzo gadzirirwa mumaburi asiri esimbi, kuchera dhayamita mm kana mm. Smmo kana bhodhi rakamanikana, maburi maviri ekumisikidza anofanirwa kuiswa, uye oiswa diagonally. If you make a jigsaw board, you can also think of the jigsaw board as a PCB, the whole jigsaw board as long as there are three positioning holes. Kana mushandisi asingaise, wedunhu bhodhi mugadziri anozongowedzera pachayo nekuda kwekusakanganisa tambo, kana kushandisa makomba aripo asiri esimbi mubhodhi semaburi ekumisikidza.

Nzvimbo gomba nzvimbo nzira

Device hole Interface devices and connectors are mostly plug-in components. Iyo kuburikidza nepahomwe dhayamita yekuisa chishandiso yakakura kupfuura pini dhayamita ye8 ~ 20mil, uye tin inopinda yakanaka panguva yekutengesa. Izvo zvinofanirwa kucherechedzwa kuti pane kukanganisa mukuzara kwefekitori bhodhi fekitori, uye iko kukanganisa iko kuri ± 0.05mm. 0.05mm imhando yekuboora pane imwe nguva, uye 0.lmm imhando yekuboora pane imwe neimwe nguva kana dhayamita iri pamusoro pe3.20. Naizvozvo, kana uchigadzira aperture yechigadzirwa, iyo unit inofanirwa kushandurwa kuita mamilimita, uye iyo aperture inofanirwa kuve yakagadzirirwa sehuwandu hwakazara hwe0.05. Iyo fekitori yeplate inoisa iyo yekuchera chishandiso saizi maererano nedhata rekuchera rakapihwa nemushandisi. Iyo yekuchera chishandiso saizi inowanzo kuve 0.1 ~ 0.15 yakakura kupfuura iyo inogadzira gomba rinodiwa nemushandisi. Iyo dhayamita yeiyo mmo dhizaini inofanirwa kuve yakakura pane diki, uye izvo zvinodiwa zvekushivirira ngazvivewo zvakakura pane zvidiki. Kana chiri chigadzirwa chekupwanya, aperture haifanire kuwedzerwa, zvinoenderana nedata rakakurudzirwa dhizaini, uye mumirairo yekutsanangura chiri crimping mudziyo, kuitira kuti wedunhu bhodhi mugadziri aedze kudzora iko kukanganisa mukugadzira board, kunzvenga mamwe matambudziko asina basa.

Mhando dzekuchera dzakakamurwa kuita maburi esimbi uye maburi asina kuyerwa. Iko kune yakatsetseka mhangura pamadziro eiyo metallized hole, iyo inogona kutamba inoitisa basa uye inomiririrwa nePTH. Iko hakuna mhangura mumadziro egomba eiyo isina metalli gomba, saka haigone kuitisa magetsi. Inoratidzwa neNPTH. Musiyano uripakati pekunze dhayamita uye hwomukati dhayamita yeiyo metallized gomba dhayamita rinofanira kunge rakakura kudarika 20mil, zvikasadaro iwelding mhete yepadiki yakanyanya kushoma kuti igadziriswe uye haina kukodzera kutenderera. Kana mamiriro ezvinhu achibvumidza, iyo yekuzarura inogona kugadzirirwa kuve radius yepad. Iyo yakanyanya hombe dhayamita yegomba rakagadziriswa iri 6.35mm, uye iro rakakura gomba dhayamita reiyo isina kukwana gomba iri 6.5mm. Iyo metallized gomba haifanire kugadzirirwa pamutsetse wemakona. Buri mugomba rinofanira kuve rinopfuura 1mm kure nemutsara wemakona. Cobalt hole heavy hole easily damage the drill, so should be avoided as much as possible. Pasina Welding uye isina yemagetsi isiri yesimbi gomba, gomba rinogona kugadzirwa muchimiro cheasina metallic yekutengesa ndiro gomba haidi kugadzira, tambo kana yemhangura foil angangoita 1 mmo yekuboora gomba kumucheto chinhambwe zvichienderana nechimiro chinogona kukamurwa kuita denderedzwa gomba uye rectangular gomba, zvakajairika kuchera kwegomba rakakomberedza, rectangular gomba rakaruma zvinoenderana nemaitiro akatemwa nenguva zhinji dzekuchera, nokudaro rectangle gomba dhizaini kukura kwakanyanya kupetwa kaviri, Uye hupamhi hausi pasi pe0.8mm, zvishoma sezvinobvira kugadzira maburi emakona.

PCB positioning hole requirements:

Kubudirira kwePCB design indasitiri kwave kukura, saka izvo zvinodikanwa zvePCB yekumisikidza maburi zvakare akakwana kwazvo. Makomba ekumisikidza anofanirwa kuzadzisa zvinotevera zvinodiwa.

1. Isa maburi maviri ekumisikidza pane diagonal yebhodhi.

2. Mukana wakazara wegomba rekumisikidza ndi 3.2mm _ + 0.05mm.

3, kune akasiyana zvigadzirwa zvebhizinesi veneer inogona zvakare kushandisa inotevera inofarira kuvhura: 2.8mm ± 0.05mm, 3.0mm ± 0.5mm, 3.5mm ± 0.5mm uye 4.5mm ± 05mm. Kune akasiyana mabhodhi echigadzirwa chimwe chete (senge DT bhodhi uye PP bhodhi reZXJlO), kana iyo PCB iine zviyero zvakafanana, maburi ekumisikidza anofanira kunge akafanana.

4. Iyo nzvimbo yekumisikidza igomba rakareruka, kureva kuti, isiri yemasimbi kuburikidza negomba (kunze kweiyo rf bhodhi).

5. Kana maburi aripo ekumisikidza (kunze kwemaburi ekumisikidza mabheji) achizadzisa izvo zvataurwa pamusoro, hapana chikonzero chekumisazve rimwe gomba rekumisikidza.

Zvimwe zvakajairika kutaurwa uye kunyatso kudikanwa kwekumisikidza maburi:

1. Dhayamita kukanganisa huwandu hwenzvimbo yekumisikidza gomba kazhinji iri mukati me0.01mm. Kana iko kukanganisa kwakakura muPCB yekugadzira kamuri, kunokonzeresa kusangana kweiyo probe uye kusarongeka kwakaringana kweiyo interface yekubatanidza kune iyo yekuisa otomatiki mashini.

2.

3, kumisikidza gomba pcb network nhambwe: inopfuura 1MM, kuitira kuti iyo yekuisa mashandiro isiri nyore kupfupisa dunhu, zvakare haizokonzere kukuvadza munzira yechigadzirwa.

4.

5, kumisikidza dundira dhizaini: inoda kuve muPCBA makona mana kana diagonal, kuti ugadzire nzvimbo dzakasiyana-siyana, kumisa kurongeka, zviri nani.

6, iyo nhambwe iri pakati penzvimbo yekumisikidza uye poindi yekuyedza inofanira kunge iri 2mm, kudzivirira iyo isiriyo pfupi redhiyo mumuedzo.

7. Daro pakati pegomba rekumisikidza uye kumucheto kweplate ndiro 2mm, izvo zvisiri nyore kutsemuka uchiona simba rePCBA.