A cikin labarai na ƙarshe, an gabatar da hanyar ƙira na babban tsiri ultrasonic filastik waldi slotted haɗin gwiwa da gwaje-gwajen da aka tabbatar.Da fari dai, ƙaho na walda mai tsiri ya kasu cikin raka'a da yawa ta yadda ƙirar ƙahon walda mai ratsi tare da hadadden tsari ya zama ƙirar ƙahon walda mai sauƙi.Sa'an nan kuma an kwatanta ɓangaren haɗin gwiwa tare da oscillator na rabin igiyar ruwa tare da daidai sashi tare da la'akari da haɗakarwar girgiza.Ana samun ma'auni na mitar haɗin gwiwa ta hanyar amfani da ma'anar daidaitattun ma'auni na inji.
A ƙarshe, an yi nazarin tasirin lambar ramin, faɗin ramin da tsayin ramin akan halayen girgizar haɗin gwiwar walda ta amfani da ma'auni.Dangane da wannan hanyar, an tsara ƙungiyoyi da yawa na manyan ɗigon tsiri da injina.Sakamakon gwaji ya nuna cewa ma'auni da ƙididdige ƙididdiga na mitar resonance na haɗin gwiwar welded suna cikin kyakkyawar yarjejeniya.
Kamar yadda aka nuna a hoton da ke ƙasa.Tsawon, faɗi da kauri na ƙahon walda sune L, B da T bi da bi.Yi la'akari da axis z a matsayin alkiblar tashin hankali na transducer.A mitar aiki, haɗin haɗin walda na rectangular zai samar da jijjiga madaidaiciyar tsari na farko a cikin hanyar Z.Domin tsiri walda gidajen abinci, L≥2T, B da L za a iya kwatanta, don haka transverse vibration na walda gidajen abinci a cikin X shugabanci za a iya watsi.
Saboda jujjuyawar jujjuyawar a cikin y direction yana da babban tasiri akan jijjiga mai tsayi, yawanci ana kwatanta shi ta hanyar slotting.An raba ƙaho na walda zuwa raka'a (n+1) ta hanyar buɗe n ramummuka iri ɗaya a cikin hanyar Y.Nisa da tsayin kowane ramin W da L2 bi da bi, kuma an raba ramummuka daga shigarwa da ƙarshen fitarwa na ƙahon walda l1 da L3 bi da bi.Don tabbatar da cewa kowace naúrar daidai take, ya kamata a buɗe ramukan faɗin W/2 a ƙarshen ƙahon walda mai jujjuyawa.Saboda haka, kowane walda mold naúrar ne fili trapezoidal ƙaho tare da rectangular sashe.Idan muka ɗauka cewa faɗin iyakar biyu da tsakiyar kowace raka'a shine D1 da D2, ana iya gani daga sama: L= L1 + L2 + L3
Saboda irin wannan tsari tsakanin abubuwan, girman fitarwa na walda shima zai girgiza ƙirar, kuma idan aka haɗa shi, ƙaho na ultrasonic shima zai sami wannan ƙirar, ta yadda za a sauƙaƙe ƙirar ƙirar ultrasonic zuwa ƙirar kowane ɗayan. kashi.Bugu da kari, shi ne in mun gwada da uniform.Domin yadda ya kamata murkushe jujjuyawar juzu'i da tabbatar da cewa ƙahon walda yana da tsayayyen tsauri, faɗin sashin ƙahon walda wanda tsagi ya raba gabaɗaya a ciki!/ 8 ku!/ 4 (! Shin tsayin daka na farkon-oda a tsaye yanayin girgizar ƙaho na walda), kuma madaidaicin nisa na Ramin yana kusa!/25 ku!/20[7], da grooving adadin waldi gidajen abinci za a iya ƙaddara bisa ga sama sharudda.Domin nisa na ƙahon walda gabaɗaya baya wuce!PI/4, don haka ana iya tantance shi ta hanyar ka'idar girma ɗaya.Duk wani sashin walda a cikin naúrar 1 ana iya ɗaukarsa a matsayin wanda ya ƙunshi sandunan ma'auni guda uku.
Aluminum alloy 7075 (Matsalar Matasa E = 7.17*1010N/M2 yawa ρ=2820kg/m3, Poisson's ratio V =0.34) an zaɓi don ƙahon walda.An yi amfani da ma'auni (1) ~ (3) da (6) don ƙididdige adadin n, tsawon L2 da faɗin W na ramummuka daban-daban.Lokacin da tsayin L na ƙaho na walda na tsiri ya canza tare da faɗin B, tsayin resonant L na ƙaho na walda yana canzawa tare da faɗin B. Mitar resonant mai ƙididdige f=20kHz, L1=L3 don sauƙi.Lokacin da tsayin ramin da faɗin ya kasance akai-akai, tsayin resonant yana canzawa tare da faɗin ƙahon weld lokacin da lambar ramin ta bambanta.L2 = 60mm, W = 10mm.Kamar yadda ake iya gani daga FIG.2, don ƙahon walda mai ramin da aka nuna a FIG.1, na farko-oda tsayin resonance karami fiye da na unslotted walda ƙahon da aka lissafta bisa ga daya-girma ka'idar (126mm), da kuma resonant tsawon na walda ƙaho yana ƙaruwa da karuwa na nisa na walda ƙaho, amma karuwa yana raguwa a hankali.Bugu da kari, a lokacin da resonant mita da weld nisa ne akai, da resonant tsawon weld rage tare da karuwa da Ramin lambar.
Bugu da kari, uku welded gidajen abinci na daban-daban kauri aka machined tare da aluminum gami 7075 (kayan abu kamar na sama).An ba da kauri T na waɗannan mahaɗaɗɗen haɗin gwiwa guda uku da ma'aunin jijjiga mai jituwa FM.Lokacin da kaurin ƙahon walda bai wuce kashi ɗaya cikin huɗu na tsawon zangon ba (a nan ne 63mm), ɓacin ran tsakanin mitar da aka auna da ƙirar ƙira bai wuce 2% ba, wanda zai iya biyan buƙatun aikace-aikacen injiniya.
Dogon tsiri ultrasonic roba walda haɗin gwiwa da hankali ya kasu kashi da dama daidai abubuwa da kuma mitar equation na haɗin gwiwa kashi aka deduced ta hanyar canja wurin matrix Hanyar.Idan an san nisa da yawa da girman ramin, ana iya amfani da ma'auni don zayyana haɗin gwiwar tsiri yadda ya kamata, don haka samar da tushen ka'ida don ƙirar haɗin tsiri.Wannan takarda kuma tana nazarin tasirin lambar ramin, faɗin ramin da tsayin ramin akan girman haɗin gwiwar walda ta hanyar misalai.Ana iya ganin cewa wannan hanya kuma tana da wani tasiri akan ingantaccen ƙirar haɗin gwiwar walda
Tsaga tsagi bayan tsiri walda ƙahon bincike bincike, da walda ƙahon za a iya raba zuwa karshen naúrar jiki da tsakiyar naúrar cell, ta amfani da hanyar bayyana elasticity hanya da kuma tasirin watsa layin, da tsawon da hudu daban-daban raka'a da aka bayar bi da bi da kuma shugabanci na babban matakin mitar mitar, ana iya amfani da ma'aunin mitar don tsara ƙaho mai tsayi mai tsayi, amma tsarin ƙirar yana da rikitarwa, Zaɓin wasu sigogi ya dogara da ƙwarewa kuma bai dace da aikace-aikacen injiniya ba.A cikin wannan takarda, an raba haɗin walda na tsiri zuwa abubuwa daidai-daidai ta hanyar madaidaicin slotting, kuma ana samun mitar mitar haɗin haɗin walda ta hanyar hanyar matrix canja wuri, wanda ke ba da tushen ka'idar ƙirar haɗin gwiwar tsiri.Zane yana da ƙididdige ƙididdiga mai sauƙi da ma'anar zahiri ta zahiri, wanda ke ba da hanya mai sauƙi da sauƙi don ƙirar injiniyan tsiri
hadin gwiwa walda.
Lokacin aikawa: Maris 17-2022