Hauv PCB teb, Ntau tus kws tsim khoom siv hluav taws xob tsis tshua paub tias yuav tsum muaj cov ntaub ntawv zoo li cas thiab tsim cov ntaub ntawv zoo li cas rau saum npoo mount.Peb yuav qhia koj txhua yam txog nws.Centroid cov ntaub ntawv.
Cov ntaub ntawv Centroid yog cov ntaub ntawv tshuab hauv ASCII cov ntawv nyeem uas suav nrog tus tsim siv, X, Y, kev sib hloov, sab saum toj lossis hauv qab ntawm lub rooj tsavxwm.Cov ntaub ntawv no ua rau peb cov engineers tuaj yeem txuas nrog qhov chaw mount los ua ke kom raug.
Txhawm rau tso qhov chaw mounted rau ntawm PCBs ntawm cov cuab yeej siv tshuab, nws yog ib qho tsim nyog los tsim cov ntaub ntawv Centroid los tsim cov khoom siv.Ib cov ntaub ntawv Centroid muaj tag nrho cov kev tsis sib haum xeeb xws li lub tshuab paub qhov chaw tso cov khoom thiab nyob rau hauv qhov kev taw qhia ntawm PCB.
Cov ntaub ntawv Centroid muaj cov ntaub ntawv hauv qab no:
1. Reference Designator (RefDes).
2. Txheej.
3. X qhov chaw.
4. Y qhov chaw.
5. Kev taw qhia ntawm kev sib hloov.
RefDes
RefDes sawv cev rau tus tsim siv siv.Nws yuav ua raws li koj daim nqi ntawm cov ntaub ntawv thiab PCB markup.
Txheej
Txheej yog hais txog sab saum toj lossis sab nraub qaum ntawm PCB lossis sab uas muab cov khoom tso rau.PCB fabricators thiab assemblers feem ntau hu rau sab saum toj thiab rov qab sab ntawm cov tivthaiv sab thiab solder sab, feem.
Qhov chaw
Qhov chaw: X thiab Y Qhov chaw xa mus rau qhov tseem ceeb uas txheeb xyuas qhov chaw kab rov tav thiab ntsug ntawm PCB tivthaiv nrog rau lub hauv paus chiv keeb.
Qhov chaw nyob yog ntsuas los ntawm lub hauv paus chiv keeb mus rau qhov chaw ntawm qhov chaw.
Lub hauv paus chiv keeb yog txhais raws li tus nqi (0, 0) thiab nyob rau ntawm lub kaum sab laug sab laug ntawm lub rooj tsavxwm los ntawm qhov pom ntawm sab saum toj.
Txawm tias sab nraub qaum ntawm lub rooj tsavxwm siv lub kaum sab laug qis dua li lub hauv paus ntsiab lus siv.
X thiab Y qhov chaw qhov tseem ceeb yog ntsuas rau kaum txhiab ntawm ib nti (0.000).
Kev sib hloov
Kev sib hloov yog cov kev taw qhia ntawm kev sib hloov ntawm PCB tivthaiv qhov kev tso kawm orientation hais los ntawm qhov pom ntawm qhov pom.
Kev sib hloov yog 0 txog 360 degree tus nqi ntawm lub hauv paus chiv keeb.Ob qho tib si sab saum toj thiab khaws cia sab hauv siv lub ntsiab lus saum toj kawg nkaus ntawm kev saib raws li lawv cov ntsiab lus siv.
Hauv qab no yog cov txheej txheem tseem ceeb los tsim nws los ntawm kev tsim software sib txawv
Eagle Software
1. Khiav mountsmd.ulp los tsim cov ntaub ntawv Centroid.
Koj tuaj yeem saib cov ntaub ntawv los ntawm kev mus rau cov ntawv qhia zaub mov.Xaiv cov ntaub ntawv thiab mam li khiav ULP los ntawm cov npe dropdown.Lub software yuav sai sai tsim lub .mnt (mount top) thiab .mnb (mount rov qab).
Cov ntaub ntawv no tswj xyuas qhov chaw ntawm cov khoom sib txuas nrog rau kev sib koom ua ke ntawm PCB lub hauv paus chiv keeb.Cov ntaub ntawv yog nyob rau hauv hom txt.
Altium Software
Cov software no yog siv los tsim cov khoom siv thiab tso tawm uas yuav siv rau hauv cov txheej txheem sib dhos.
Muaj ob txoj hauv kev los tsim cov zis:
1. Tsim cov ntaub ntawv tso tawm txoj hauj lwm Configuration (*.outjob).Qhov no yuav tsim ib tug zoo configured tso zis generator.
2. Los ntawm cov ntawv qhia zaub mov xaiv cov ntaub ntawv.Tom qab ntawd los ntawm cov npe dropdown, nyem rau ntawm Kev Sib Tham Cov Lus Qhia thiab tom qab ntawd Tsim Cov Xaiv thiab Muab Cov Ntaub Ntawv.
Tom qab txhaj, OK, koj yuav pom cov zis hauv Pick and Place Setup dialog box.
Nco tseg: Cov zis tsim los ntawm Cov Ntawv Pov Thawj Txoj Haujlwm Kev teeb tsa yog qhov sib txawv ntawm cov zis tsim los ntawm Pick and Place Setup dialog box.Cov kev teeb tsa tau muab khaws cia rau hauv cov ntaub ntawv config thaum siv Cov Ntawv Pov Thawj Txoj Haujlwm Kev teeb tsa cov ntaub ntawv xaiv.Txawm li cas los xij, thaum siv Pick and Place Setup dialog, cov chaw khaws cia hauv qhov project file.
ORCAD/ALLEGRO Software
Cov software no yog siv los tsim cov khoom siv thiab tso tawm uas yuav siv rau hauv cov txheej txheem sib dhos.
Muaj ob txoj hauv kev los tsim cov zis:
1. Tsim cov ntaub ntawv tso tawm txoj hauj lwm Configuration (*.outjob).Qhov no yuav tsim ib tug zoo configured tso zis generator.
2. Los ntawm cov ntawv qhia zaub mov xaiv cov ntaub ntawv.Tom qab ntawd los ntawm cov npe dropdown, nyem rau ntawm Kev Sib Tham Cov Lus Qhia thiab tom qab ntawd Tsim Cov Xaiv thiab Muab Cov Ntaub Ntawv.
Tom qab txhaj, OK, koj yuav pom cov zis hauv Pick and Place Setup dialog box.
Nco tseg: Cov zis tsim los ntawm Cov Ntawv Pov Thawj Txoj Haujlwm Kev teeb tsa yog qhov sib txawv ntawm cov zis tsim los ntawm Pick and Place Setup dialog box.Cov kev teeb tsa tau muab khaws cia rau hauv cov ntaub ntawv config thaum siv Cov Ntawv Pov Thawj Txoj Haujlwm Kev teeb tsa cov ntaub ntawv xaiv.Txawm li cas los xij, thaum siv Pick and Place Setup dialog, cov chaw khaws cia hauv qhov project file.
Post lub sij hawm: Jun-21-2021