Ezindabeni zokugcina, indlela yokuklama yobukhulu obukhulu be-ultrasonic welding ye-plastic welding slotted yahlongozwa futhi yaqinisekiswa ngokuhlolwa.Okokuqala, uphondo Welding strip ngokunengqondo ihlukaniswe yaba amayunithi amaningana ukuze umklamo slotted Welding uphondo ngesakhiwo esiyinkimbinkimbi siguqulelwa design elula Welding uphondo unit.Bese into ehlangene iqhathaniswa ne-half wave oscillator enesigaba esilinganayo kucatshangelwa ukudlidliza okuhlanganisayo.I-equation ye-frequency ye-joint itholakala ngokusebenzisa umqondo we-impedance mechanical okulingana.
Ekugcineni, ithonya lenombolo ye-slot, ububanzi be-slot nobude be-slot ezicini zokudlidliza zamajoyinti okushisela kwacwaningwa kusetshenziswa i-equation.Ngokwale ndlela, amaqembu amaningana ama-strip grooves amakhulu aklanywe futhi enziwe ngomshini.Imiphumela yokuhlola ibonisa ukuthi amanani alinganisiwe nawethiyori wemvamisa ye-resonance yamalunga ashiselwe avumelana kahle.
Njengoba kuboniswe emfanekisweni ongezansi.Ubude, ububanzi nokuqina kophondo lokushisela kungu-L, B no-T ngokulandelana.Thatha i-eksisi engu-z njengendawo ethokozisayo ye-transducer.Kumafrikhwensi okusebenza, ijoyinti yokushisela engunxande izokhiqiza ukudlidliza kwe-longitudinal oku-oda lokuqala ku-Z.Emajoyini wokushisela ama-strip, i-L≥2T, B kanye ne-L ingaqhathaniswa, ngakho-ke ukudlidliza okuphambene kwamajoyinti okushisela ngaku-X kungashaywa indiva.
Ngenxa yokuthi ukudlidliza okuphambene kusiqondisindlela esingu-y kunethonya elikhulu ekudlidlizeni kwe-longitudinal, ngokuvamile kulingisa ngokuslot.Uphondo lokushisela luhlukaniswe ngamayunithi (n+1) ngokuvula ngokulinganayo izikhala ze-n ku-Y direction.Ububanzi nobude be-slot ngayinye yi-W kanye ne-L2 ngokulandelanayo, futhi izikhala zihlukaniswa nokufakwa nokukhishwa kokuphela kophondo lokushisela i-l1 ne-L3 ngokulandelanayo.Ukuqinisekisa ukuthi iyunithi ngayinye ilingana ngokuphelele, ama-grooves of wide W /2 kufanele avulwe kuzo zombili iziphetho zophondo lwe-welding transverse.Ngakho-ke, iyunithi ngayinye yokubumba i-welding iwuphondo lwe-trapezoidal oluhlanganisiwe olunesigaba esingunxande.Uma sicabanga ukuthi ububanzi emikhawulweni yomibili naphakathi kweyunithi ngayinye kungu-D1 no-D2, kungabonakala kokungenhla: L= L1 + L2 +L3
Ngenxa yephethini efanayo phakathi kwezakhi, i-amplitude ephumayo ye-weld izophinde idlidlize iphethini, futhi uma ihlangene, uphondo lwe-ultrasonic luzoba naleli phethini, ukuze ukuklanywa kwesikhunta se-ultrasonic kube lula ukuklama kwanoma yikuphi. isici.Ngaphezu kwalokho, ifana ngokufanayo.Ukuze ucindezele ngempumelelo ukudlidliza okuphambene nokuqinisekisa ukuthi uphondo lokushisela linokuqina okungaguquki, ububanzi beyunithi yophondo lokushisela oluhlukaniswe umsele ngokuvamile bungena!;8;!4/ 25!/20[7], inombolo yokugoqa yamajoyinti okushisela inganqunywa ngokwemibandela engenhla.Ngoba ububanzi beyunithi yophondo lwe-welding ngokuvamile abudluli!PI/4, ngakho-ke ingacutshungulwa ngethiyori yohlangothi olulodwa.Noma iyiphi iyunithi yokushisela kuyunithi 1 ingabhekwa njengehlanganisa amabha amathathu alinganayo angama-rectangular.
Ingxubevange ye-Aluminium 7075 (i-Young's modulus E=7.17*1010N/M2 density ρ=2820kg/m3, isilinganiso sikaPoisson V =0.34) sikhethelwe uphondo lokushisela.Izibalo (1) ~ (3) kanye no-(6) zisetshenziselwe ukubala inombolo n, ubude u-L2 nobubanzi u-W bezikhala ezihlukene.Lapho ubude obuzwakalayo L bophondo lokushisela kushintsha nobubanzi B, ubude obuzwakalayo L bophondo lokushisela buyashintsha ngobubanzi B. Imvamisa ebaliwe ye-resonant f=20kHz, L1=L3 ukuze kube lula.Uma ubude nobubanzi be-slot bungashintshi, ubude be-resonant bushintsha nobubanzi be-weld horn lapho inombolo ye-slot ihlukile.L2 =60mm, W =10mm.Njengoba kungabonwa ku-FIG.2, ngophondo lwe-welding olufakwe ku-FIG.I-1, ubude be-resonance ye-resonance yokuqala buncane kunophondo lwe-welding olungavuliwe olubalwa ngokuvumelana ne-one-dimensional theory (126mm), futhi ubude obuzwakalayo bophondo lokushisela buyanda ngokukhula kobubanzi bophondo lokushisela, kodwa ukwanda kuncipha kancane kancane.Ngaphezu kwalokho, lapho imvamisa ye-resonant kanye nobubanzi be-weld buhlala njalo, ubude be-resonant be-weld buyancipha ngokunyuka kwenombolo ye-slot.
Ngaphezu kwalokho, amalunga amathathu ashiselwe anogqinsi oluhlukene enziwe ngomshini nge-aluminium alloy 7075 (into efanayo nangaphezulu).Ubukhulu T bala malungu amathathu ashiselwe kanye ne-harmonic vibration frequency FM kwanikezwa.Lapho ukujiya kwezimpondo zokushisela kungaphansi kwekota yobude begagasi (nansi i-63mm), ukuphambuka phakathi kwemvamisa elinganisiwe kanye nemvamisa yokuklama kungaphansi kuka-2%, okungahlangabezana nezidingo zezicelo zobunjiniyela.
Umugqa omude we-ultrasonic welding welding we-plastic welding wawuhlukaniswe ngokufanelekile waba izakhi eziningana ezilinganayo kanye ne-frequency equation ye-joint element yatholwa ngendlela yokudlulisa i-matrix.Uma ububanzi nenani kanye nosayizi we-slot baziwa, i-equation ingasetshenziswa ukuklama i-strip ehlangene kahle, ngaleyo ndlela inikeze isisekelo sethiyori somklamo wejoyinti lomugqa.Leli phepha libuye lihlaziye ithonya lenombolo ye-slot, ububanzi be-slot nobude be-slot kusayizi we-welding joint ngezibonelo.Kungabonakala ukuthi le ndlela nayo inethonya elithile ekwakhiweni kokwenza kahle kokuhlangana kwe-welding
Hlukanisa i-groove ngemuva kokuhlaziywa kokudlidliza kwe-strip welding, uphondo lokushisela lungahlukaniswa lube ngumzimba weyunithi yokugcina kanye neseli eliphakathi leyunithi, kusetshenziswa indlela yendlela yokunwebeka ebonakalayo kanye nomphumela womugqa wokudlulisela, ubude bamayunithi amane ahlukene anikezwa ngokulandelana futhi isiqondiso sezinga eliphezulu le-frequency equation, i-frequency equation ingasetshenziswa ukuklama uphondo lwe-welding yebha ende, kodwa inqubo yokuklama iyinkimbinkimbi, Ukukhethwa kwamanye amapharamitha kuncike ekuhlangenwe nakho futhi akulungele ukusetshenziswa kobunjiniyela.Kuleli phepha, i-strip welding joint ihlukaniswe yaba izakhi eziningana ezilinganayo nge-slotting enengqondo, futhi i-equation ye-frequency ye-welding joint element itholakala ngendlela yokudlulisa i-matrix, ehlinzeka ngesisekelo sethiyori sokuklanywa kwejoyinti le-strip welding.Idizayini inezibalo ezilula zethiyori kanye nencazelo ebonakalayo ebonakalayo, ehlinzeka ngendlela elula nelula yomklamo wobunjiniyela be-strip.
i-welding joint.
Isikhathi sokuthumela: Mar-17-2022