Na ua tseba ka liphetoho tsa paramente nakong ea welding ea ultrasonic?

Nakong ea ts'ebetso ea welding kaultrasonic welder, pontšo ea pontšo ea motlakase tsamaisong ea acoustic e fetoha ka potlako, 'me mefuta e fapaneng ea maqhubu e pharaletseng.E le ho ntlafatsa lebelo la tekanyo le ho nepahala, pele, ho nkoa mehato ea ho khetha chip ka lebelo la karabo e potlakileng, 'me nako e tsitsitseng ea karolo le sehokelo sa filthara sa potoloho ea chip e laoloa hore e be ka tlase ho 0.2 ms. , e le ho etsa bonnete ba hore nako eohle ea karabelo ea tsamaiso e ka tlase ho 2 ms, le ho finyella tlhokahalo ea ho lemoha letšoao la motlakase le fetohang ka potlako.E le ho etsa bonnete ba hore ho hlokahala hore ho be le tlhokahalo ea li-band frequency amplitude le litšoaneleho tsa maqhubu a tsamaiso, mochine oa mofuta oa RCK o nang le botsitso bo phahameng le botsitso bo phahameng o khethoa, o nang le inductance e fokolang ea parasitic le capacitance.Likarolo tsa Op-amp li tla khethoa ka mokhoa o bulehileng oa ho hōlisa li-loop tse fetang 10 le ho holisoa ha li-loop tse koetsoeng tse ka tlaase ho 10. Ka tsela ena, sekhahla se sephara sa amplitude-frequency curve se ka fumanoa ho tloha 0 ~ 20 kHz ± 3 kHz.Se latelang ke tlhaloso e khuts'oane ea mojule ka mong oa tšebetso.

1.1 Tekanyo ea li-Vrms tsa motlakase oa RMS

Thepa ea teko e hlahisitsoeng pampiring ena e ka lekanya lets'oao la motlakase oa sinusoidal ka ho sotha ka RMS ea 0 ~ 1 000 V le khafetsa ea 20 kHz ± 3 kHz.Motlakase oa ho kenya o ntšoa ka lets'oao, boleng ba RMS bo fetoleloa ho AC / DC, ebe bo fetoloa ka mokhoa o lekanang ho ba liteishene tse peli tsa tlhahiso.Channel e le 'ngoe e fanoa ho hlooho ea 3-bit semi-digital meter ho phanele e ka pele ea tester, e bonts'ang ka kotloloho boleng ba RMS ba 0-1 000 V voltage.E 'ngoe e hlahisa 0 ~ 10 V lets'oao la motlakase oa analoge ka phanele e ka morao ea mohlahlobi bakeng sa ho nkuoa ha data le ho hlahlojoa ke komporo.

Mochini oa welding oa Ultrasonic (1)

Letšoao la motlakase le ka ntšoa ka motlakase oa motlakase, sensor ea Hall element kapa sesebelisoa sa phetoho ea photoelectric.Mekhoa ena

Le hoja karohano e le ntle, e tla hlahisa likhato tse fapaneng tsa ho sotha ha waveform le phetoho e eketsehileng ea mohato bakeng sa lets'oao la motlakase la 20 kHz, e leng se etsang hore ho be thata ho netefatsa ho nepahala ha tekanyo ea matla le tekanyo ea Angle ea mohato.Sengoliloeng sena SE SEBELISA amplifier e lekanang le ts'ebetso ea mats'oao a motlakase, khanyetso ea ho kenya amplifier e sebelisa 5. 1 M Ψ, karolo ena e ka etsa hore lets'oao la ho kenya le fokotsehe, ts'ireletso e phahameng ea khatello bakeng sa lipotoloho tse latelang, 'me ka lebaka la ho kenella ha amplifier ho feta hole. pontšo ea mohloli oa ho hanyetsa ha jenereithara ea ultrasonic, boemo ba ho sebetsa ha jenereithara ea ultrasonic ha bo na tšusumetso.

 

AD637 e sebelisetsoa tekanyo ea voltage RMS.Ke AC-DC RMS converter e nang le ts'ebetso e phahameng ea upconversion le sehlopha se pharaletseng sa maqhubu, 'me phetoho e ikemetse ho sebopeho sa maqhubu.Ke 'nete RMS converter.Phoso e kholo ke hoo e ka bang 1%.Ha waveform factor e le 1 ~ 2, ha ho na phoso e eketsehileng e hlahisoang.

1.2 Tekanyo ea boleng ba hona joale bo sebetsang hantle

Potoloho ea hona joale ea RMS e hlahisitsoeng pampiring ena e ka lemoha letšoao la hona joale ka ho sotha sinusoidal ea 0 ~ 2 A, 20 kHz ± 3 kHz.Ka ho amohela khanyetso e tloaelehileng ea sampole e hokahantsoeng ka letoto ho loop ea mojaro oa jenereithara ea ultrasonic ho FIG.1, ea hona joale e qala ho fetoloa hore e be lets'oao la motlakase ho lekana le eona.Kaha khanyetso ea sampole ke sesebelisoa se hloekileng sa ho hanyetsa, e ke ke ea tlisa ho sotha ha waveform kapa phetoho e eketsehileng ea mohato, e le ho netefatsa ho nepahala ha tekanyo.Letšoao la motlakase le lekanang le la hona joale le fetoloa lets'oao la motlakase oa analog ke RMS AC-DC converter AD637, e hlahisoang ho hlooho ea mitha ea dijithale le komporo ka litsela tse peli.Molao-motheo oa ho fetola o tšoana le oa phetoho ea motlakase oa RMS.

Mochini oa welding oa Ultrasonic (2)

1.3 Tekanyo ea matla a sebetsang

Letšoao le sebetsang la tekanyo ea matla le tsoa ho motlakase o fokolitsoeng le I / V e fetotsoeng mojuleng oa tekanyo ea RMS ea voltage le ea hona joale.Motheo oa mojule oa tekanyo ea matla ke AD534 analog multiplier le filthara ea potoloho.Ka mor'a hore motlakase oa hang-hang o atolosoe ke phallo ea phallo ea hona joale, karolo e phahameng ea maqhubu e sefshoa ho fumana matla a sebele a sebetsang.

 

1. 4 Tekanyo ea phapang ea mohato pakeng tsa hona joale le motlakase

Phapang ea mohato pakeng tsa motlakase oa ho kenya letsoho le oa hona joale oa transducer ea ultrasonic e lekanngoa ka ho bopa motlakase o kenang le matšoao a hona joale hore e be maqhubu a lisekoere ka papiso ea zero-crossing, ebe o kopanya phapang ea mohato ka XOR logic processing.Hobane ha ho na phapang ea karolo feela lipakeng tsa voltage le hona joale, empa hape le phapang lipakeng tsa lead le lag, Ming Yang o boetse a thehile potoloho ea nako ho tsebahatsa kamano ea lead le lag.Haeba u na le tlhoko ka kopo ikopanye le rona.

1.5 Tekanyo ea maqhubu

Mojule oa ho lekanya khafetsa o amohela chip e le 'ngoe ea microcomputer 8051, e sebelisa maqhubu a tloaelehileng a kristale, palo ea lets'oao la kristale ka nako e itseng ea lets'oao, e ka bonoa ka har'a 1 ms, frequency ke 20 kHz, phoso ha e fete 2 Hz.Liphetho tsa litekanyo tsa maqhubu li hlahisoa ka linomoro tsa binary tsa 16-bit, tse kentsoeng kareteng ea I/O ea komporo, 'me li fetoleloa ho boleng ba frequency ba decimal ka software ea software.

Mochini oa welding oa Ultrasonic (3)

Ultrasonic polasetiki welding e phethoa tlas'a hang-hang le khatello, 'me mokhoa oa ho tjheseletsa o bontša litšobotsi tsa tšusumetso e potlakileng, e rarahaneng, e thata le e mengata.Nakong le ka mor'a ho tjheseletsa, khatello e kholo le deformation (welding residual deformation, welding shrinkage, welding warping) e tla hlahisoa, 'me khatello e matla le khatello e setseng ea welding e hlahisoang ts'ebetsong ea ho tjheseletsa, empa hape e ama ho senyeha ha workpiece le mefokolo ea welding.

E boetse e ama weldability ea sebopeho workpiece le brittle fracture matla, mokhathala matla, chai matla, litšobotsi vibration joalo-joalo.Haholo-holo ama tjheseletsa workpiece machining ho nepahala le botsitso dimensional.Bothata ba ho tjheseletsa khatello ea mocheso le deformation ke ntho e thata haholo, ntle le ponelo-pele, e ke ke ea bolela esale pele ka botlalo le ho sekaseka tšusumetso ea ho cheselletsa thepa ea mochini oa welder kaofela, 'me ka nepo lekola boleng ba welding.Ka nako e ts'oanang, lintlha tse ngata tsa bohlokoa, e leng tšusumetso, li ke ke tsa lekanyetsoa ka ho toba ka mekhoa e tloaelehileng.

 

Re litsebi tsa R & D, tlhahiso, le thekiso eamochini oa welding oa ultrasonic, mochini o tjheseletsang maqhubu a phahameng, mochini oa tšepe oa tšepe, Jenereithara ea Ultrasonicfektheri.Re thabela ho arolelana tšehetso ea rona ea tekheniki ea ultrasound le boiphihlelo ba nyeoe ea ultrasound.Haeba u na le morero oo u lokelang ho o sheba, ka kopo re bolelle thepa le boholo ba lihlahisoa tsa hau.Re tla u fa lenaneo la mahala la ultrasonic welding.


Nako ea poso: Oct-20-2022