Uma kukhulunywa ngezimbobo kuma-PCB (Amabhodi Esifunda Aphrintiwe), kwangathi kukhona umuntu ohlale enelukuluku lokwazi ngezimbobo ezimbili ezikhethekile: Imbobo ye-Counterbore kanye ne-Countersunk hole. Kulula ukudideka futhi kulula ukungaqondi uma ungumuntu we-PCB. Namuhla, sizokwethula umehluko phakathi kwe-counterbore kanye ne-countersunk ukuze uthole imininingwane, masiqhubeke sifunda!
Yini i-Counterbore Hole?
Imbobo ye-counterbore iyi-recess eyi-cylindrical ku-PCB enobubanzi obukhulu endaweni engaphezulu kanye nobubanzi obuncane ngaphansi. Inhloso yembobo ye-counterbore ukudala isikhala sekhanda eliyisikulufa noma i-flange yebhawodi, ukuyivumela ukuthi ihlale phansi noma ngaphansi kancane kwendawo ye-PCB. I-diameter enkulu ngaphezulu yamukela ikhanda noma i-flange, kuyilapho i-diameter encane iqinisekisa ukuthi i-shaft ye-fastener noma umzimba ulingana kahle.
Iyini i-Countersunk Hole?
Ngakolunye uhlangothi, imbobo eshisiwe iyindawo yokuphuma ekhoneni ku-PCB evumela ukuthi ikhanda lesikulufu noma ibhawudi lihlale lishibilika endaweni ye-PCB. Umumo wembobo ecwile ufana nephrofayili yekhanda lesibophelelo, okwenza indawo engenamthungo neleveli lapho isikulufu noma ibhawudi ifakwa ngokugcwele. Izimbobo zokubala ngokuvamile ziba nohlangothi olune-engeli, ngokuvamile elingu-82 noma amadigri angu-90, olunquma umumo nosayizi wekhanda lokubopha elizongena endaweni yokuphuma.
I-Counterbore VS Countersunk: Ijometri
Ngenkathi zombili izimbobo ze-counterbore kanye ne-countersunk zisebenzisa inhloso yokufaka izinsimbi, umehluko wazo omkhulu usejiyomethri yazo kanye nezinhlobo zezinto zokubopha ezizisebenzisayo.
Izimbobo eziwu-counterbore zine-recess eyi-cylindrical enobubanzi obubili obuhlukene, kuyilapho izimbobo ezishisiwe zine-recess eyi-conical enobubanzi obubodwa.
Izimbobo eziphikisayo zakha indawo enezitebhisi noma eziphakanyisiwe endaweni ye-PCB, kuyilapho izimbobo ezishisiwe ziphumela endaweni eshaywayo noma ehlehlisiwe.
I-Counterbore VS Countersunk: Izinhlobo Zokubopha
Izimbobo eziphikisayo zisetshenziselwa ikakhulukazi izixhumi ezinekhanda noma i-flange, njengamabhawudi noma izikulufu ezidinga indawo eqinile yokukhweza.
Izimbobo ze-Countersunk zidizayinelwe izixhumi ezinekhanda elicijile, njengezikulufu ze-flathead noma amabhawodi aphikisayo, ukuze kuzuzwe indawo eshaywayo.
I-Counterbore VS Countersunk: Ama-engeli wokubhoboza
Amasayizi ahlukene kanye nama-engeli okumba ama-drill bits anikezwa ukukhiqiza osinki, kuye ngokusetshenziswa okuhlosiwe. Lawa ma-engeli angabandakanya u-120°, 110°, 100°, 90°, 82°, no-60°. Kodwa-ke, ama-engeli okubhoboza asetshenziswa kakhulu uma kubalwa ama-engeli angu-82° no-90°. Ukuze uthole imiphumela emihle, kubalulekile ukuqondisa i-engeli yozinki ne-engeli ecijile engxenyeni engezansi yekhanda lokubopha. Ngakolunye uhlangothi, izimbobo ze-counterbore zifaka izinhlangothi ezihambisanayo futhi azidingi ukuthi kuncishiswe.
I-Counterbore VS Countersunk: Izicelo
Ukukhetha phakathi kwezimbobo ze-counterbore kanye nezimbobo ezishisiwe kuncike kuzimfuneko ezithile zomklamo we-PCB nezinto ezisetshenziswayo.
Izimbobo zokubala zithola izinhlelo zokusebenza ezimeni lapho ukuqiniswa okuvikelekile nokushaywayo kwezingxenye noma amapuleti okufaka kuyadingeka. Ngokuvamile zisetshenziselwa ukubopha izixhumi, abakaki, noma ama-PCB endaweni ebiyelwe noma i-chassis.
Izimbobo ze-Countersunk zivame ukusetshenziswa lapho ukucatshangelwa kobuhle kubalulekile, njengoba kunikeza indawo ethambile neleveli. Avame ukusetshenziselwa ukukhweza ama-PCB endaweni lapho kufunwa khona ukuqedwa kokushaywa, njengakuma-electronics omthengi noma izinhlelo zokusebenza zokuhlobisa.
Izimbobo ezibambene nezibaliwe ziyizici ezibalulekile ekwakhiweni kwe-PCB, okuvumela ukukhweza okusebenzayo kwengxenye nokuqiniswa okuvikelekile. Ukuqonda umehluko phakathi kwalezi zinhlobo ezimbili zezimbobo kuvumela abaklami ukuthi bakhethe inketho efanelekile ngokusekelwe ezidingweni ezithile zezinhlelo zabo zokusebenza ze-PCB. Noma ngabe kuqinisekisa ukuxhumana okuvikelekile noma ukuthola isiphetho esibukeka kahle, ukukhetha phakathi kwezimbobo eziphikisayo nezigobile kudlala indima ebalulekile ekusebenzeni kukonke kanye nobuhle benhlangano ye-PCB.