Litabeng tsa ho qetela, mokhoa oa moralo oa boholo bo boholo strip ultrasonic welding slotted joint o ile oa sisinngoa le ho netefatsoa ke liteko.Taba ea pele, lenaka la ho tjheseletsa lesela le arotsoe ka likarolo tse 'maloa e le hore moralo oa lenaka le nang le tjheseletsa le nang le sebopeho se rarahaneng le fetoloa ho ba moralo oa yuniti e bonolo ea lenaka.Ebe karolo e kopaneng e bapisoa le halofo ea oscillator ea wave e nang le karolo e lekanang ho nahanoa ka ho sisinyeha ha coupling.The frequency equation ea lenonyello e fumanoa ka ho sebelisa mohopolo oa ho ts'oaroa ha mochini o lekanang.
Qetellong, tšusumetso ea palo ea sekotjana, bophara ba sekotjana le bolelele ba sekotjana holim'a litšobotsi tsa ho sisinyeha tsa manonyeletso a tjheseletsa li ile tsa ithutoa ka ho sebelisa equation.Ho ea ka mokhoa ona, lihlopha tse 'maloa tsa li-grooves tse kholo tsa boholo li ile tsa etsoa le ho etsoa ka mechine.Liphetho tsa liteko li bontša hore litekanyetso tse lekantsoeng le tsa khopolo-taba tsa maqhubu a resonance ea manonyeletso a cheselitsoeng li lumellana hantle.
Joalokaha ho bontšitsoe setšoantšong se ka tlase.Bolelele, bophara le botenya ba lenaka la welding ke L, B le T ka ho latellana.Nka z axis e le tataiso ea thabo ea transducer.Maqhubung a ts'ebetso, lenonyeletso la tjheseletsa la khutlonnetsepa le tla hlahisa ho thothomela ha longitudinal pele ka tsela ea Z.Bakeng sa manonyeletso a tjheseletsa, L≥2T, B le L li ka bapisoa, kahoo ho thothomela ho fapaneng ha manonyeletso a tjheseletsa ka tataiso ea X ho ka hlokomolohuoa.
Hobane ho thothomela ho potang ka y ho na le tšusumetso e kholo ho sisinyeho ea longitudinal, hangata e etsisoa ka ho thula.Lenaka la tjheseletsa le arotsoe ka likarolo tsa (n+1) ka ho bula ka mokhoa o ts'oanang li-slots ho Y.Bophara le bolelele ba sekotjana se seng le se seng ke W le L2 ka ho latellana, 'me li-slots li arotsoe ho tsoa lipheletsong tsa ho kenya le ho tsoa ha lenaka la welding L1 le L3 ka ho latellana.Ho etsa bonnete ba hore yuniti e 'ngoe le e' ngoe e lekana ka ho feletseng, li-grooves tsa bophara ba W / 2 li lokela ho buloa lipheletsong tse peli tsa lenaka le tjheseletsang.Ka hona, yuniti e 'ngoe le e' ngoe ea tjheseletsa ea hlobo ke lenaka la trapezoidal le nang le karolo e nang le mahlakore a mabeli.Ho nka hore bophara ba lipheletsong ka bobeli le bohareng ba yuniti ka 'ngoe ke D1 le D2, e ka bonoa ho tsoa ka holimo: L= L1 + L2 +L3
Ka lebaka la mokhoa o ts'oanang pakeng tsa lisebelisoa, amplitude e hlahisoang ea weld e tla sisinyeha le mohlala, 'me ha e kopantsoe, lenaka la ultrasonic le lona le tla ba le mokhoa ona, e le hore moqapi oa hlobo oa ultrasonic o tla nolofalloa ho moralo oa leha e le efe. element.Ho phaella moo, e batla e tšoana.E le ho hatella ka katleho ho thothomela ho pota-potileng le ho etsa bonnete ba hore lenaka la ho cheselletsa le na le ho satalla ho tsitsitseng, bophara ba lenaka la ho tjheseletsa le arotsoeng ke groove hangata bo kene!/8 ~!/ 4 (! Na leqhubu la bolelele ba mokhoa oa pele oa ho thothomela oa lenaka la welding), 'me bophara bo loketseng ba sekotjana ke hoo e ka bang!/ 25 ~!/20[7], palo ea grooving ea li-welding joints e ka khethoa ho latela lintlha tse ka holimo.Hobane bophara ba yuniti ea lenaka la welding hangata ha bo fete!PI /4, kahoo e ka hlahlobisisoa ka khopolo ea lehlakore le le leng.Yuniti efe kapa efe ea tjheseletsa yuniti ea 1 e ka nkuoa e na le li-bars tse tharo tsa khutlonnetsepa tsa equisectional.
Aluminium motsoako 7075 (Modulus Young E = 7.17 * 1010N/M2 segokanyipalo ρ=2820kg/m3, Poisson's karo-karolelano V =0,34) ile a khethoa bakeng sa ho tjheseletsa lenaka.Litekanyo (1) ~ (3) le (6) li ile tsa sebelisoa ho bala palo ea n, bolelele ba L2 le bophara ba W ea libaka tse fapaneng.Ha resonant bolelele L ea strip tjheseletsa lenaka fetoha le bophara B, resonant bolelele L ea strip tjheseletsa lenaka fetoha le bophara B. The balwa resonant frequency f = 20kHz, L1 = L3 bakeng sa bonolo.Ha bolelele le bophara ba sekotjana li sa fetohe, bolelele ba resonant bo fetoha le bophara ba lenaka la weld ha palo ea slot e fapane.L2 =60mm, W =10mm.Joalokaha ho ka bonoa ho FIG.2, bakeng sa lenaka la welding le slotted le bontšitsoeng ho FIG.1, ea pele-taelo resonance bolelele ke tse nyenyane ho feta hore uslotted lenaka tjheseletsa balwa ho ya ka ntlha-dimensional khopolo-taba (126mm), le resonant bolelele ba lenaka tjheseletsa eketseha ka keketseho ea bophara ba lenaka tjheseletsa, empa keketseho e fokotseha butle-butle.Ho phaella moo, ha maqhubu a resonant le bophara ba weld a sa fetohe, bolelele ba resonant ba weld bo fokotseha ka ho eketseha ha palo ea slot.
Ho feta moo, manonyeletso a mararo a cheselitsoeng a botenya bo fapaneng a ne a entsoe ka motsoako oa aluminium 7075 (thepa e tšoanang le e kaholimo).Botenya ba T ba manonyeletso ana a mararo a cheselitsoeng le maqhubu a ho thothomela a harmonic a fanoeng.Ha tjheseletsa lenaka botenya ke ka tlaase ho kotara ea wavelength (mona ke 63mm), ho kheloha pakeng tsa maqhubu a lekantsoeng le maqhubu a moralo ke ka tlaase ho 2%, e leng ka kopana le ditlhoko tsa dikopo boenjiniere.
The long strip ultrasonic plastic welding joint e ne e arotsoe ka mokhoa o utloahalang hore e be likarolo tse 'maloa tse lekanang' me palo ea maqhubu a karolo e kopanetsoeng e ile ea fumanoa ka mokhoa oa ho fetisa matrix.Haeba bophara le bongata le boholo ba sekotjana li tsejoa, equation e ka sebelisoa ho rala lenonyeletso la hlobolisa hantle, ka hona ho fana ka motheo oa mohopolo oa moralo oa lenonyeletso.Pampiri ena e boetse e hlahlobisisa tšusumetso ea palo ea sekotjana, bophara ba sekotjana le bolelele ba sekotjana ho boholo ba kopanelo ea welding ka mehlala.Ho ka bonoa hore mokhoa ona o boetse o na le tšusumetso e itseng molemong oa ntlafatso ea motsoako oa welding
Arohane groove ka mor'a hore hlobolisa tjheseletsa lenaka thothomela, lenaka tjheseletsa lenaka ka aroloa ka ho qetela yuniti 'mele le bohareng yuniti sele, ho sebelisa mokhoa oa ho bonahala elasticity mokhoa le phello ea phetiso line, bolelele ba diyuniti tse' nè tse fapaneng ba fuoa ka ho latellana le tataiso ea tekanyo e phahameng ea frequency equation, frequency equation e ka sebelisoa ho rala lenaka le lelelele la welding, empa ts'ebetso ea moralo e rarahane, Khetho ea litekanyo tse ling e ipapisitse le boiphihlelo mme ha e bonolo bakeng sa ts'ebeliso ea boenjiniere.A pampiri ena, hlobolisa tjheseletsa kopanetsweng e arotsoe ka likarolo tse 'maloa tse lekanang ka slotting utloahalang,' me maqhubu a equation ea tjheseletsa kopanetsweng element e fumanoa ka phetiso matrix mokhoa, e leng e fana ka motheo oa khopolo-taba bakeng sa moralo oa hlobolisa tjheseletsa kopanetsweng.Moralo o na le lipalo tse bonolo tsa theory le moelelo o hlakileng oa 'mele, o fanang ka mokhoa o bonolo le o bonolo bakeng sa moralo oa boenjiniere oa strip.
motsoako oa ho cheselletsa.
Nako ea poso: Mar-17-2022