01 Chifukwa Chake Puzzle
Bungwe la dera likapangidwa, zigawo ziyenera kuikidwa pamzere wa msonkhano wa SMT chip. Fakitale iliyonse yopangira ma SMT idzafotokoza kukula koyenera kwambiri kwa bolodi loyang'anira dera malinga ndi zofunikira pakukonza mzere wa msonkhano. Mwachitsanzo, kukula kwake ndi kochepa kwambiri kapena kwakukulu, ndipo mzere wa msonkhano umakhazikika. Zida za bolodi la dera sizingakonzedwe.
Ndiye funso limadzuka, bwanji ngati kukula kwa bolodi la dera lathu palokha kuli kochepa kuposa kukula koperekedwa ndi fakitale? Ndiko kuti, tifunika kusonkhanitsa bolodi lozungulira ndikusonkhanitsa matabwa angapo ozungulira kukhala gawo lonse. Kuyika kumatha kupititsa patsogolo magwiridwe antchito pamakina oyika kwambiri komanso pakuwotchera mafunde.
02 Kufotokozera Kwapuzzle
○ Makulidwe
a. Kuti zitheke kukonza, mbali ya bolodi ya veneer kapena m'mphepete mwaluso iyenera kukhala yamtundu wa R-chamfer. Kawirikawiri, ngodya yozungulira ndi Φ5.
b. Pamene bolodi kukula zosakwana 100mm × 70mm, ndi PCB ayenera anasonkhana (onani Chithunzi 3.1).
Zofunikira pakukula kwa puzzles:
Utali L: 100mm ~ 400mm
M'lifupi W: 70mm ~ 400mm
○ PCB yosakhazikika
Ma PCB okhala ndi mawonekedwe osakhazikika komanso opanda jig ayenera kukhala ndi m'mphepete mwaluso. Ngati PCB ali ndi mabowo ndi kukula kuposa kapena wofanana 5mm × 5mm, mabowo ayenera anamaliza pa kapangidwe kupewa soldering ndi mapindikidwe bolodi pa soldering. Gawo lothandizira ndi gawo loyambirira la PCB liyenera kukhala mbali imodzi Lumikizani ndikuchotsa pambuyo pa kutenthetsa mafunde (onani Chithunzi 3.2)
Pamene kugwirizana pakati pa ndondomeko m'mphepete ndi PCB ndi poyambira V woboola pakati, mtunda pakati pa m'mphepete mwa chipangizo ndi V woboola pakati poyambira ndi ≥2mm; pamene kugwirizana pakati pa ndondomeko m'mphepete ndi PCB ndi dzenje sitampu, zipangizo ndi mizere saloledwa anakonza mkati 2mm kuzungulira dzenje sitampu.
○ Zodabwitsa
Mayendedwe a jigsaw ayenera kupangidwa molingana ndi momwe akulowera m'mphepete mwake. Pamene kukula sikungakwaniritse zofunikira zomwe zili pamwambazi pa kukula kwa kuyika, chosiyana ndi. Nthawi zambiri zimafunikira "V-CUT" kapena kuchuluka kwa mizere ya bowo la sitampu ≤ 3 (kupatula zowonda zowonda), onani Chithunzi 3.4
Kwa bolodi lopangidwa mwapadera, tcherani khutu ku kugwirizana pakati pa bolodi la mwana wamkazi ndi bolodi la mwana wamkazi, ndipo yesetsani kugwirizanitsa pa sitepe iliyonse yolekanitsidwa pamzere, monga momwe tawonetsera pa Chithunzi 3.5.
03 pcb puzzle pamwamba pazinthu khumi zomwe zimafunikira chisamaliro
Munthawi yanthawi zonse, kupanga kwa PCB kumatchedwa opareshoni ya Panelization (Panelization), cholinga chake ndikuwonjezera magwiridwe antchito a mzere wopanga wa SMT, kenako PCB PCB, ndi mfundo ziti zomwe tiyenera kulabadira? Tiyeni tione limodzi.
1. Chimango chakunja (clamping edge) cha chithunzi cha PCB chikuyenera kutengera mawonekedwe otsekeka kuti awonetsetse kuti chithunzithunzi cha PCB sichidzapunthwa chikakhazikitsidwa pa fixture.
2. Mawonekedwe a chithunzi cha PCB ali pafupi ndi lalikulu momwe ndingathere. Ndibwino kugwiritsa ntchito 2 × 2, 3 × 3,….
3. PCB gulu m'lifupi ≤260mm (SIEMENS mzere) kapena ≤300mm (FUJI mzere); ngati kugawa basi kumafunika, PCB gulu m'lifupi × kutalika≤125mm × 180mm.
4. Bolodi iliyonse yaing'ono mu chithunzi cha PCB iyenera kukhala ndi mabowo osachepera atatu, 3 ≤ kabowo ≤ 6 mm, mawaya kapena patching saloledwa mkati mwa 1 mm wa mabowo oyika m'mphepete.
5. Mtunda wapakati pakati pa mbale zazing'ono umayendetsedwa pakati pa 75mm ~ 145mm.
6. Mukayika malo owonetserako, nthawi zambiri musiye malo opanda solder 1.5mm okulirapo kuposa malo oikirapo.
7. Pasakhale zida zazikulu kapena zida zotulukira pafupi ndi malo olumikizirana pakati pa chimango chakunja chazithunzi ndi bolodi yaying'ono yamkati, komanso pakati pa bolodi yaying'ono ndi bolodi yaying'ono, ndipo payenera kukhala malo opitilira 0.5mm pakati pa m'mphepete mwa zigawo ndi PCB Kuonetsetsa kuti chida chodulira chimayenda bwino.
8. Mabowo anayi amatsegulidwa pamakona anayi a chimango chakunja cha gululo, ndipo m'mimba mwake ndi 4mm ± 0.01mm; mphamvu ya dzenje liyenera kukhala laling'ono kuti liwonetsetse kuti silidzasweka pa mbale zapamwamba ndi zapansi. .
9. Zizindikiro zomwe zimagwiritsidwa ntchito poyika PCB ndikuyika kachipangizo kabwino kwambiri. M'malo mwake, ma QFP okhala ndi phula lochepera 0.65mm ayenera kukhazikitsidwa pamalo awo ozungulira; zizindikiro zogwiritsiridwa ntchito poika matabwa a ana aakazi a PCB aziphatikizana Gwiritsani ntchito, ikani mwa diagonally pa malo oikapo.
10.Zigawo zazikuluzikulu ziyenera kukhala ndi malo oyika kapena mabowo, kuyang'ana pa mawonekedwe a I / O, maikolofoni, mawonekedwe a batri, yaying'ono.kusintha, headphone mawonekedwe, galimoto, etc.