M'mawu otsiriza, kamangidwe njira lalikulu-kukula Mzere akupanga pulasitiki kuwotcherera slotted olowa anali akufuna ndi kutsimikiziridwa ndi zatsopano.Choyamba, nyanga yowotcherera Mzere imagawidwa m'magawo angapo kotero kuti mapangidwe a nyanga yowotcherera yokhala ndi mawonekedwe ovuta amasinthidwa kukhala kapangidwe ka nyanga yosavuta yowotcherera.Kenako gawo lolumikizana limafanizidwa ndi theka la oscillator lomwe lili ndi gawo lofanana poganizira kugwedezeka.Ma frequency equation a olowa amapezedwa pogwiritsa ntchito lingaliro lofanana ndi makina osakanikirana.
Pomaliza, chikoka cha nambala ya kagawo, m'lifupi kagawo ndi kutalika kwa kagawo pa mawonekedwe a kugwedezeka kwa zolumikizira zowotcherera zidawerengedwa pogwiritsa ntchito equation.Malinga ndi njirayi, magulu angapo a mizere yayikulu yayikulu adapangidwa ndikupangidwa ndi makina.Zotsatira zoyesera zikuwonetsa kuti miyeso yoyezera komanso yongoyerekeza ya ma frequency a resonance a ma welded amagwirizana bwino.
Monga momwe chithunzi chili pansipa.Kutalika, m'lifupi ndi makulidwe a nyanga yowotcherera ndi L, B ndi T motsatana.Tangoganizani z axis ngati njira yosangalatsa ya transducer.Pamaulendo ogwirira ntchito, cholumikizira chowotcherera cha makona anayi chimatulutsa kugwedezeka koyamba kwautali wolowera ku Z.Pa zolumikizira zowotcherera, L≥2T, B ndi L zitha kufananizidwa, kotero kugwedezeka kozungulira kwa mfundo zowotcherera munjira ya X kunganyalanyazidwe.
Chifukwa kugwedezeka kodutsa mu njira ya y kumakhudza kwambiri kugwedezeka kwautali, nthawi zambiri kumafaniziridwa ndi kulotera.Nyanga yowotcherera imagawidwa mu magawo (n+1) potsegula chimodzimodzi n mipata munjira ya Y.M'lifupi ndi kutalika kwa kagawo iliyonse ndi W ndi L2 motero, ndipo mipata amasiyanitsidwa ndi athandizira ndi linanena bungwe malekezero a nyanga kuwotcherera L1 ndi L3 motero.Kuonetsetsa kuti gawo lililonse liri lofanana, mizere ya W / 2 iyenera kutsegulidwa kumapeto kwa nyanga yopingasa yowotcherera.Choncho, aliyense kuwotcherera nkhungu unit ndi pawiri trapezoidal nyanga ndi gawo amakona anayi.Kungoganiza kuti m'lifupi kumapeto onse awiri ndi pakati pa gawo lililonse ndi D1 ndi D2, zitha kuwoneka kuchokera pamwambapa: L= L1 + L2 +L3
Chifukwa cha chitsanzo chomwecho pakati pa zinthu, linanena bungwe matalikidwe a weld adzakhalanso kunjenjemera chitsanzo, ndipo pamene pamodzi, akupanga nyanga adzakhalanso chitsanzo ichi, kuti kamangidwe ka akupanga nkhungu adzakhala chosavuta kuti kamangidwe kake. chinthu.Kuphatikiza apo, ndizofanana.Pofuna kupondereza bwino kugwedezeka kodutsa ndikuwonetsetsa kuti nyanga yowotcherayo ili ndi kuuma kokhazikika, m'lifupi mwa nyanga yowotcherera yomwe imagawidwa ndi poyambira nthawi zambiri imakhala mkati!/ 8 pa!/ 4 (! Ndi kutalika kwa mawonekedwe a kugwedezeka kotalika kotalika kwa nyanga yowotcherera), ndipo m'lifupi mwabwino wa kagawo ndi pafupi!/ 25 pa!/20[7], kuchuluka kwa zolumikizira zowotcherera zitha kuzindikirika molingana ndi zomwe zili pamwambapa.Chifukwa m'lifupi nyanga kuwotcherera nyanga zambiri si upambana!PI / 4, kotero imatha kufufuzidwa ndi chiphunzitso cha mbali imodzi.Chigawo chilichonse chowotcherera mu unit 1 chikhoza kuwonedwa ngati chopangidwa ndi mipiringidzo itatu yamakona anayi.
Aluminiyamu aloyi 7075 (Young's modulus E=7.17*1010N/M2 kachulukidwe ρ=2820kg/m3, chiŵerengero cha Poisson V =0,34) anasankhidwa nyanga kuwotcherera.Ma equations (1) ~ (3) ndi (6) anagwiritsidwa ntchito powerengera nambala n, utali L2 ndi m'lifupi W wa malo osiyanasiyana.Pamene resonant kutalika L wa Mzere kuwotcherera nyanga kusintha ndi m'lifupi B, resonant kutalika L wa Mzere kuwotcherera nyanga kusintha ndi m'lifupi B. The masamu resonant pafupipafupi f = 20kHz, L1 = L3 kuphweka.Pamene kagawo kutalika ndi m'lifupi mosalekeza, resonant kutalika kusintha ndi weld nyanga m'lifupi pamene nambala kagawo ndi osiyana.L2 = 60mm, W = 10mm.Monga momwe zikuwonekera kuchokera ku FIG.2, ya nyanga yowotcherera yomwe ikuwonetsedwa mu FIG.1, woyamba kuti resonance kutalika ndi ang'onoang'ono kuposa nyanga kuwotcherera unslotted kuwerengeredwa malinga ndi mbali imodzi chiphunzitso (126mm), ndi resonant kutalika kwa nyanga kuwotcherera ukuwonjezeka ndi kuwonjezeka m'lifupi nyanga kuwotcherera, koma kuwonjezeka kumachepetsa pang'onopang'ono.Komanso, pamene resonant pafupipafupi ndi kuwotcherera m'lifupi zonse, resonant kutalika kwa kuwotcherera amachepetsa ndi kuwonjezeka kagawo nambala.
Kuphatikiza apo, zolumikizira zitatu zowotcherera za makulidwe osiyanasiyana zidapangidwa ndi aluminium aloyi 7075 (zinthu zomwezi pamwambapa).Makulidwe a T a malo olumikizira atatuwa komanso ma frequency a harmonic vibration FM adaperekedwa.Pamene kuwotcherera nyanga makulidwe ndi zosakwana kotala la wavelength (apa ndi 63mm), kupatuka pakati pafupipafupi anayeza ndi kamangidwe pafupipafupi ndi zosakwana 2%, amene angakwaniritse zofunikira za ntchito zomangamanga.
The yaitali Mzere akupanga pulasitiki kuwotcherera olowa anali zomveka ogaŵikana angapo ofanana zinthu ndi pafupipafupi equation wa olowa amafotokozera anadziwika ndi kutengerapo masanjidwewo njira.Ngati m'lifupi ndi kuchuluka kwake ndi kukula kwa kagawoko zimadziwika, equation ingagwiritsidwe ntchito kupanga cholumikizira cholumikizira bwino, motero kumapereka maziko amalingaliro a kapangidwe ka cholumikizira.Pepalali limasanthulanso mphamvu ya nambala ya slot, m'lifupi mwake ndi kutalika kwa kagawo kagawo kakuwotcherera kolumikizana kudzera mu zitsanzo.Zitha kuwoneka kuti njirayi imakhalanso ndi chikoka pakukonzekera kukhathamiritsa kwa olowa awotcherera
Gawani poyambira pambuyo Mzere kuwotcherera nyanga kugwedera kusanthula, nyanga kuwotcherera akhoza kugawidwa mu mapeto a unit thupi ndi pakati unit selo, ntchito njira zikuoneka elasticity njira ndi zotsatira za kufala mzere, kutalika kwa mayunitsi anayi osiyana amapatsidwa motero ndi mayendedwe a kuchuluka kwa ma frequency equation, ma frequency equation angagwiritsidwe ntchito kupanga nyanga yayitali yowotcherera, koma mapangidwe ake ndi ovuta, Kusankhidwa kwa magawo ena kumadalira zomwe zachitika ndipo sikoyenera kugwiritsa ntchito uinjiniya.Mu pepalali, Mzere kuwotcherera olowa anawagawa angapo ofanana ndi slotting wololera, ndi pafupipafupi equation wa kuwotcherera olowa chinthu akamagwira kutengerapo masanjidwewo njira, amene amapereka maziko ongoyerekeza kamangidwe ka Mzere kuwotcherera olowa.Mapangidwewa ali ndi mawerengedwe osavuta amalingaliro komanso tanthauzo lodziwikiratu lakuthupi, lomwe limapereka njira yosavuta komanso yosavuta yopangira mapangidwe amizere.
kuwotcherera mgwirizano.
Nthawi yotumiza: Mar-17-2022