Molemo ka ho fetisisa Theknoloji ke e mong oa molemo ka ho fetisisa bahlahisi ba pcb le bafepedi ba boto e hatisitsoeng ka China
Puo
Molemo ka ho fetisisa Theknoloji ke e mong oa molemo ka ho fetisisa bahlahisi ba pcb le bafepedi ba boto e hatisitsoeng ka China
Ha ho tluoa ho masoba a PCBs (Printed Circuit Boards), motho a ka lula a labalabela ho tseba ka likoti tse peli tse khethehileng: Counterbore Hole le Countersunk Hole. Ba bonolo ho ferekanngoa le ho le bonolo ho se utloisisane haeba u le layman ea PCB. Kajeno, re tla hlahisa phapang lipakeng tsa counterbore le countersunk bakeng sa lintlha, a re tsoeleng pele ho bala!
Counterbore Hole ke eng?
Lesoba la counterbore ke cylindrical recess ho PCB e nang le bophara bo boholo bo holimo le bophara bo nyane ka tlase. Morero oa lesoba la "counterbore" ke ho theha sebaka sa "screw head" kapa "flange" ea bolt, e e lumellang hore e lule e otlolohile kapa ka tlase ho sebaka sa PCB. Bophara bo boholo bo ka holimo bo amohela hlooho kapa flange, ha bophara bo bonyenyane bo tiisa hore shaft kapa 'mele oa fastening o lumellana hantle.
Countersunk Hole ke eng?
Ka lehlakoreng le leng, lesoba la countersunk ke sebaka sa "conical" ho PCB se lumellang hlooho ea screw kapa bolt ho lula ka holim'a PCB. Sebōpeho sa lesoba la countersunk se lumellana le boemo ba hlooho ea fastener, ho etsa sebaka se se nang moeli le se lekaneng ha screw kapa bolt e kenngoa ka ho feletseng. Likoti tsa li-countersunk hangata li na le lehlakore le nang le mahlakoreng, hangata likhato tse 82 kapa 90, tse khethollang sebopeho le boholo ba hlooho e tiileng e tla lekana le phomolo.
Counterbore VS Countersunk: Geometry
Le ha masoba a li-counterbore le li-countersunk a sebeletsa sepheo sa ho amohela li-fasteners, phapang ea bona e kholo e ho geometry ea bona le mefuta ea li-fasteners tseo ba li amohelang.
Likoti tsa Counterbore li na le sebaka sa cylindrical se nang le li-diameter tse peli tse fapaneng, ha likoti tse entsoeng ka countersunk li na le lekhalo le nang le bophara bo le bong.
Likoti tsa Counterbore li etsa sebaka se ka holimo kapa se phahamisitsoeng holim'a PCB, athe masoba a countersunk a etsa hore ho be le sebaka se kolobileng.
Counterbore VS Countersunk: Mefuta ea Fastener
Likoti tsa Counterbore li sebelisoa haholo-holo bakeng sa li-fasteners tse nang le hlooho kapa flange, joalo ka liboutu kapa li-screw tse hlokang sebaka se tiileng sa ho hola.
Likoti tsa li-countersunk li etselitsoe li-fasteners tse nang le hlooho e kholo, joalo ka li-screw tse bataletseng kapa liboutu tsa countersunk, ho fihlela bokaholimo ba metsi.
Counterbore VS Countersunk: Boha li-angles
Mefuta e fapaneng ea boholo le li-angles tsa ho cheka tsa li-drill bits li fanoa bakeng sa ho hlahisa li-countersinks, ho itšetlehile ka tšebeliso e reriloeng. Li-angles tsena li ka kenyelletsa 120°, 110°, 100°, 90°, 82°, le 60°. Leha ho le joalo, hangata li-angles tsa ho cheka bakeng sa countersinking ke 82° le 90°. Bakeng sa liphetho tse nepahetseng, ho bohlokoa ho lekanya sekhutlo sa countersink le sekhutlo se tapered ka tlase ho hlooho ea fastening. Ka lehlakoreng le leng, masoba a counterbore a na le mahlakore a bapileng 'me ha a hloke hore a tepe.
Counterbore VS Countersunk: Likopo
Khetho pakeng tsa mekoti ea counterbore le countersunk e itšetlehile ka litlhoko tse khethehileng tsa moralo oa PCB le likarolo tse sebelisoang.
Likoti tsa Counterbore li fumana lits'ebetso maemong ao ho ona ho tiisang ho ts'ireletsehileng le ho ts'oaroa ha likarolo kapa lipoleiti tse ntseng li hola ho hlokahala. Hangata li sebelisoa ho tiisa likhokahano, masakaneng, kapa li-PCB sebakeng se koaletsoeng kapa chassis.
Likoti tsa Countersunk hangata li sebelisoa ha ho nahanoa ka bokhabane ho le bohlokoa, kaha li fana ka sebaka se boreleli le se lekanang. Hangata li sebelisoa bakeng sa ho kenya li-PCB libakeng tseo ho hlokahalang hore ho qetelle ho tsona, joalo ka lisebelisoa tsa elektroniki tsa bareki kapa lisebelisoa tsa mekhabiso.
Likoti tsa Counterbore le countersunk ke likarolo tsa bohlokoa moralong oa PCB, tse nolofalletsang ho kenya likarolo hantle le ho tiisa ka mokhoa o sireletsehileng. Ho utloisisa phapang pakeng tsa mefuta ena e 'meli ea masoba lumella bayemi ho khetha khetho e loketseng e thehiloeng litlhoko tse itseng tsa dikopo bona PCB. Hore na ke ho etsa bonnete ba hore ho na le khokahanyo e sireletsehileng kapa ho finyella ponahalo e khahlisang, khetho pakeng tsa masoba a counterbore le countersunk e bapala karolo ea bohlokoa mosebetsing le botleng ba kopano ea PCB.
