PCB pamalo dzenje ndi kulumikizana kofunikira kwambiri pakapangidwe ka PCB kuti mudziwe komwe kuli PCB kudzera pabowo. The role of the positioning hole is printed circuit board manufacturing processing benchmark. PCB pamalo dzenje pamalo njira zosiyanasiyana, makamaka malinga ndi zofuna pamalo osiyana olondola. Kuyika mabowo pamakina osindikizidwa kuyimilidwa ndi zizindikilo zapadera. When the requirements are not high, the larger assembly hole in the printed circuit board can be used instead.

Pofuna kuthandizira kusanja komiti yoyeseza ndi kugaya bolodi lokhazikika, komanso kuyesa koyenera pa intaneti, opanga makina ambiri azigawo akuyembekeza ogwiritsa ntchito kupanga mabowo atatu osasunthika pa PCB, mabowo oyika nthawi zambiri amapangidwa kukhala mabowo osakanikirana, kubowola mamilimita kapena mm. Smmo ngati bolodi ili lolimba, mabowo osachepera awiri ayenera kuikidwa, ndikuyika mozungulira. 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. Ngati wosagwiritsa ntchito sakuika, wopanga bolodi la dera azingowonjezera pamaziko osakhudza mzere, kapena kugwiritsa ntchito mabowo omwe alibe mabatani omwe ali mgululi ngati mabowo oyika.

Malo obowola malo

Device hole Interface devices and connectors are mostly plug-in components. Kudzera kwa bowo m’mimba mwake ndikulowetsa kwake ndikokulirapo kuposa pini ya 8 ~ 20mil, ndipo malata amalowera bwino panthawi yowotcherera. Tiyenera kudziwa kuti pali cholakwika pakabowo ka fakitale ya board, ndipo cholakwika chake ndi ± 0.05mm. 0.05mm ndi mtundu wa kubowola nthawi iliyonse, ndipo 0.lmm ndi mtundu wa kubowola nthawi iliyonse ngati m’mimba mwake muli pamwamba pa 3.20mm. Chifukwa chake, pokonza kabowo ka chipangizocho, chipangizocho chiyenera kusinthidwa kukhala mamilimita, ndipo kutsegula kwake kuyenera kupangidwa ngati nambala yochulukirapo ya 0.05. Fakitoleyo imakhazikitsa chida chobowolera malinga ndi kubowoleza koperekedwa ndi wogwiritsa ntchito. Kukula chida chida nthawi zambiri 0.1 ~ 0.15 zikuluzikulu kuposa dzenje kupanga chofunika wosuta. Kukula kwa mamangidwe a mmo kuyenera kukhala kwakukulu osati kocheperako, ndipo kufunikira kololerana kuyeneranso kukhala kwakukulu osati kocheperako. If it is a crimping device, the aperture should not be increased, according to the data recommended design, and in the instructions to explain what is crimping device, so that the circuit board manufacturer can try to control the error in the process of making the board, to avoid some unnecessary trouble.

Mitundu yobowola imagawika m’mabowo osanjidwa ndi mabowo osakanikirana. Pali khoma lamkuwa pakhoma la dzenje lazitsulo, lomwe limatha kugwira bwino ntchito ndikuyimiriridwa ndi PTH. Mulibe mkuwa pakhoma la dzenje la nonmetallic hole, chifukwa chake sungayendetse magetsi. Ikuwonetsedwa ndi NPTH. Kusiyana awiri awiri ndi awiri mkati mwa metallized una awiri ayenera kukhala wamkulu kuposa 20mil, apo ayi mphete kuwotcherera wa PAD ndi kochepa kwambiri kwa processing ndi abwino kuwotcherera. Ngati zololeza, kabowo kakhoza kupangidwira ngati malo ozungulira pad. Kutalika kwakukulu kwa dzenje lazitsulo ndi 6.35mm, ndipo dzenje lalikulu la dzenje losakanikirana ndi 6.5mm. Dzenje lazitsulo siliyenera kupangidwa pamzere woyenda. M’mphepete mwake muyenera kukhala kupitirira 1mm kutali ndi mzerewo. Cobalt hole heavy hole easily damage the drill, so should be avoided as much as possible. Popanda kuwotcherera ndipo palibe dzenje lamagetsi losagwiritsa ntchito zachitsulo, dzenje limatha kupangidwa kuti likhale ndi dzenje losakanikirana lazitsulo silifunikira kupanga, mzere kapena zojambulazo zamkuwa osachepera 1 mmo pobowola dzenje mtunda molingana ndi mawonekedwewo akhoza kugawidwa mu dzenje lozungulira dzenje amakona anayi, kuboola wamba dzenje wozungulira, amakona anayi dzenje pang’ono pokha malinga ndi njira zotchulidwa nthawi zambiri kuboola, motero amakona anayi dzenje kapangidwe kukula bwino ndi kawiri m’lifupi, Ndipo m’lifupi ndi osachepera 0.8mm, zochepa momwe zingathere kupanga mabowo amakona anayi.

PCB positioning hole requirements:

Kukula kwa makampani opanga ma PCB adakhwima, chifukwa chake zofunikira pazoyika mabowo a PCB zilinso zangwiro kwambiri. Maenje oyikapo ayenera kukwaniritsa izi.

1. Ikani mabowo osachepera awiri mosanjikiza pa bolodi.

2. Kufukula kwa dzenje lonyamula ndi 3.2mm _ + 0.05mm.

3, pazinthu zosiyanasiyana zamagetsi zingagwiritsenso ntchito mawonekedwe otsatirawa: 2.8mm ± 0.05mm, 3.0mm ± 0.5mm, 3.5mm ± 0.5mm ndi 4.5mm ± 05mm. Kwa matabwa osiyanasiyana azinthu zomwezi (monga DT board ndi PP board ya ZXJlO), ngati PCB ili ndi miyeso yofanana, mabowo oyika ayenera kukhala ofanana.

4. Dzenje lokhalapo ndi bowo lowala, ndiye kuti, lopanda mabowo kudzera kubowo (kupatula rf board).

5. Ngati mabowo omwe adalipo kale (kupatula mabowo okwera ma buckle) akwaniritsa zofunikira pamwambapa, palibe chifukwa chokhazikitsira dzenje lina lokhalamo.

Zina mwazomwe zimafotokozedwera komanso zofunikira pakukhazikitsa mabowo:

1. The zolakwa awiri osiyanasiyana dzenje pamalo nthawi zambiri mkati 0.01mm. Ngati cholakwikacho ndi chachikulu m’chipinda chopangira PCB, chimapangitsa kuti pakhale kulumikizana koyipa kwa kafukufukuyu ndi mayikidwe olakwika a cholumikizira cha mawonekedwe a makina oyikapo.

2, m’mimba mwake pamafunika dzenje: yesetsani kukhala pansi pa 3mm, kuti gawo loyika lisakhale lopunduka, lokulirapo komanso losavomerezeka.

3, pamalo dzenje PCB maukonde mtunda: oposa 1MM, kuti ntchito unsembe si kophweka dera lalifupi, komanso sadzakhala kuwononga njira mankhwala.

4, mtundu wokhazikitsa dzenje: kusanja dzenje nthawi zambiri kumafunikira kuwongolera mkuwa wosamira, kuti sungalumikizidwe ndi dera lomwe lili pa bolodi ndi kulondola kwakukulu.

5, kuyika chikhodzodzo masanjidwe: ayenera kukhala mu PCBA ngodya zinayi kapena opendekera, kuti apange malo okhala ndi ma point angapo, kusanja kolondola, ndizabwino kwambiri.

6, mtunda pakati pa dzenje loyikira ndi malo oyeserera ayenera kukhala osachepera 2mm, kuti mupewe gawo lalifupi poyesa.

7. Mtunda pakati pa dzenje loyikira ndi m’mphepete mwa mbaleyo ndi osachepera 2mm, zomwe sizophweka kuthyola poonetsetsa mphamvu ya PCBA.