Lintlafatso tsa morao-rao ts’ebetsong ea miniaturization e bile lona lebaka le leholo la kholo e matla ea indasteri ea elektroniki. Ha miniaturization e ntse e tsoela pele ho tsamaisa indasteri, ho etsa elektroniki le PCB e ntse e thatafala le ho feta. Karolo e phephetsang ka ho fetesisa ea tlhahiso ea PCB ke motswako oa masoba a maholohali a masoba le masoba a phunyeletsoang a sebelisetsoang khokahano. Ka masoba ho sebelisoa ho kenya likarolo tsa elektroniki tse etsang potoloho.

Ha palo ea ho paka ea masoba a PCB e ntse e eketseha, tlhoko ea likoti tse nyane le eona ea eketseha. Mechini ea ho cheka le ho cheka laser ke mekhoa e ‘meli e meholo e sebelisetsoang ho hlahisa masoba a micron a nepahetseng hape a ka phetoang. U sebelisa mekhoa ena ea ho cheka PCB, mekoti e ka ba bophara ba li-microne tse 50 ho isa ho tse 300 ka botebo ba limilimithara tse 1-3.

Mehato ea ho itšireletsa bakeng sa ho cheka PCB

Mochine oa khatiso o na le sekontiri se lebelo se phahameng se potolohang ho 300K RPM. Mabelo ana a bohlokoa ho fihlela phihlello e hlokahalang ho cheka masoba a micron scale ho PCBS.

Ho boloka ho nepahala ka lebelo le phahameng, sekontiri se sebelisa libering tsa moea le kopano e tobileng e ts’oaretsoeng ke li-collet chucks tse nepahetseng. Ntle le moo, ho sisinyeha ha ntlha e nyane ho ne ho laoloa kahare ho li-microns tse 10. E le ho boloka boemo bo nepahetseng ba lesoba ho PCB, sengoathoana se kentsoeng holim’a setulo sa tšebetso sa servo se laolang motsamao oa sebenche haufi le lilepe tsa X le Y. Li-actuator tsa mocha li sebelisoa ho laola motsamao oa PCB haufi le axis ea Z.

Ha karohano ea masoba moleng oa kopano ea PCB e fokotseha mme tlhoko ea phallo e phahameng e eketseha, elektroniki e laolang servo e kanna ea oa morao ka nako e itseng ka nako. Ho sebelisa laser cheka ho etsa likoti tse phunyelletsang tse sebelisetsoang ho etsa PCBS ho thusa ho fokotsa kapa ho felisa lag ena, e leng tlhoko ea moloko o latelang.

Laser cheka

Lesela la laser le sebelisitsoeng ho hlahiseng PCB le na le sehlopha se rarahaneng sa lisebelisoa tsa Optical tse laolang ho nepahala ha lasers tse hlokahalang ho phunya masoba.

Boholo (bophara) ba masoba a tla chekoa ho PCB bo laoloa ke lesoba la ho hlongoa, ha botebo ba masoba bo laoloa ke nako ea ho pepeseha. Ho feta moo, sefate se arotsoe ka lihlopha tse ngata ho fana ka taolo le ts’ebetso e eketsehileng. Lense ea ho tsepamisa mohopolo mohala e sebelisetsoa ho tsepamisa mohopolo matla a sefate sa laser sebakeng se hantle sa seliba. Lisebelisoa tsa Galveno li sebelisetsoa ho tsamaisa le ho beha li-PCBS ka nepo e phahameng. Lisebelisoa tsa Galveno tse khonang ho fetoha ka 2400 KHz hajoale li sebelisoa indastering.

Ntle le moo, mokhoa o mocha o bitsoang ho pepeseha ka kotloloho o ka sebelisoa ho cheka masoba libotong tsa potoloho. Mahlale a morao-rao a ipapisitse le mohopolo oa ho sebetsana le litšoantšo, moo sistimi e ntlafatsang ho nepahala le lebelo ka ho theha setšoantšo sa PCB le ho fetola setšoantšo seo ‘mapa oa sebaka. ‘Mapa oa boemo o sebelisetsoa ho hokahanya PCB ka tlase ho laser nakong ea ho cheka.

Patlisiso e tsoetseng pele ho li-algorithms tsa ts’ebetso ea litšoantšo le li-optics tse nepahetseng li tla ntlafatsa ntlafatso le tlhahiso ea tlhahiso ea PCB le ho cheka ka lebelo le phahameng ho sebelisoang ts’ebetsong.