N'ozi ikpeazụ, a tụrụ aro ma gosipụta usoro nhazi nke nnukwu warara ultrasonic plastic welding slotted nkwonkwo site na nnwale.Mbụ, a na-ekewa mpi ịgbado ọkụ ahụ n'ụzọ ziri ezi n'ọtụtụ nkeji nke mere na imewe nke mpi ịgbado ọkụ nwere mgbagwoju anya na-agbanwe ka ọ bụrụ nhazi nke otu mpi ịgbado ọkụ dị mfe.Mgbe ahụ, a na-atụnyere ihe njikọ ahụ na ọkara oscillator nke ebili mmiri nwere akụkụ nha anya na-atụle njiko ịma jijiji.A na-enweta ọnụọgụ ugboro ugboro nke nkwonkwo site n'iji echiche nke impedance arụ ọrụ kwekọrọ.
N'ikpeazụ, a mụrụ mmetụta nke nọmba oghere, obosara oghere na ogologo oghere na njirimara ịma jijiji nke nkwonkwo ịgbado ọkụ site na iji nhata.Dị ka usoro a si dị, a na-emepụta ọtụtụ ìgwè nke nnukwu oghere warara na igwe.Nsonaazụ nnwale na-egosi na ụkpụrụ a tụrụ atụ na ụkpụrụ ụkpụrụ nke resonance ugboro ugboro nke nkwonkwo welded dị n'ezigbo nkwekọrịta.
Dị ka e gosiri na foto dị n'okpuru.Ogologo, obosara na ọkpụrụkpụ nke mpi ịgbado ọkụ bụ L, B na T n'otu n'otu.Were axis z dị ka ntụzịaka mkpali nke transducer.N'ebe a na-arụ ọrụ ugboro ugboro, nkwonkwo ịgbado ọkụ akụkụ anọ ga-emepụta vibration ogologo nke mbụ na ntụziaka Z.N'ihi na warara ịgbado ọkụ nkwonkwo, L≥2T, B na L nwere ike tụnyere, otú transverse vibration nke ịgbado ọkụ nkwonkwo na X direction nwere ike ileghara anya.
N'ihi na ntụgharị ntụgharị na y direction nwere mmetụta dị ukwuu na ịma jijiji ogologo oge, a na-emekarị ya site na slotting.A na-ekewa mpi ịgbado ọkụ n'ime (n+1) nkeji site na imeghe n'otu n'otu n'ime oghere n na ntụzịaka Y.Ogologo na ogologo nke oghere ọ bụla bụ W na L2 n'otu n'otu, na oghere ndị ahụ na-ekewapụ na ntinye na njedebe nke mpi ịgbado ọkụ l1 na L3 n'otu n'otu.Iji hụ na nke ọ bụla unit bụ kpamkpam hà, grooves nke obosara W /2 kwesịrị imeghe na ma nsọtụ nke transverse ịgbado ọkụ mpi.N'ihi ya, onye ọ bụla ịgbado ọkụ ebu unit bụ a compound trapezoidal mpi nwere akụkụ anọ.Na-eche na obosara na nsọtụ abụọ na n'etiti nkeji nke ọ bụla bụ D1 na D2, a pụrụ ịhụ ya site n'elu: L= L1 + L2 +L3.
N'ihi otu ụkpụrụ dị n'etiti ihe ndị ahụ, njupụta mmepụta nke weld ga-amakwa ụkpụrụ ahụ, na mgbe ejikọtara ya, mpi ultrasonic ga-enwekwa ụkpụrụ a, nke mere na a ga-eme ka nhazi nke ultrasonic mold dị mfe na nhazi nke ọ bụla. mmewere.Ke adianade do, ọ bụ dịtụ edo.Iji mebie transverse vibration nke ọma ma hụ na mpi ịgbado ọkụ nwere isi ike, obosara nke mpi ịgbado ọkụ na-ekewa site na uzo bụ n'ozuzu ya!/8 na!/ 4 (! Bụ wavelength nke mbụ-iji longitudinal vibration mode nke ịgbado ọkụ mpi), na ezigbo obosara nke oghere bụ banyere!nke 25!/20[7], ọnụ ọgụgụ grooving nke ịgbado ọkụ nkwonkwo nwere ike kpebisie ike dị ka n'elu ibiere.N'ihi na obosara nke ịgbado ọkụ mpi unit n'ozuzu adịghị gafere!PI/4, yabụ enwere ike nyochaa ya site na tiori otu akụkụ.Enwere ike were nkeji ịgbado ọkụ ọ bụla dị na nkeji 1 dị ka ihe nwere ogwe akụkụ akụkụ anọ.
Aluminom alloy 7075 (Modules Young E=7.17*1010N/M2 density ρ=2820kg/m3, Poisson's ratio V =0.34) ka ahọpụtara maka mpi ịgbado ọkụ.A na-eji akara (1) ~ (3) na (6) gbakọọ ọnụọgụ n, ogologo L2 na obosara W nke oghere dị iche iche.Mgbe resonant ogologo L nke warara ịgbado ọkụ mpi mgbanwe na obosara B, na resonant ogologo L nke warara ịgbado ọkụ mpi mgbanwe na obosara B. The gbakọọ resonant ugboro f=20kHz, L1=L3 maka mfe.Mgbe oghere ogologo na obosara bụ mgbe nile, na resonant ogologo mgbanwe na weld mpi obosara mgbe oghere ọnụ ọgụgụ dị iche iche.L2 = 60mm, W = 10mm.Dị ka a pụrụ ịhụ na FIG.2, maka mpi ịgbado ọkụ nwere oghere egosiri na FIG.1, nke mbụ resonance resonance ogologo bụ obere karịa nke unslotted mpi ịgbado ọkụ gbakọọ dị ka otu akụkụ tiori (126mm), na resonant ogologo nke ịgbado ọkụ mpi na-abawanye na-abawanye nke obosara nke ịgbado ọkụ mpi, ma mmụba na-ebelata nke nta nke nta.Na mgbakwunye, mgbe resonant ugboro na weld obosara bụ mgbe nile, na resonant ogologo weld ibelata na-abawanye nke oghere ọnụ ọgụgụ.
Tụkwasị na nke ahụ, a na-eji aluminom alloy 7075 (otu ihe dị ka n'elu) jiri nkwonkwo atọ welded dị iche iche na-arụ ọrụ.Enyere ọkpụrụkpụ T nke nkwonkwo atọ ndị a gbadoro agbadoro yana ugboro fm a tụrụ atụ.Mgbe mpi ịgbado ọkụ bụ ihe na-erughị otu ụzọ n'ụzọ anọ nke wavelength (ebe a bụ 63mm), ndị deviation n'etiti tụrụ ugboro na imewe ugboro bụ ihe na-erughị 2%, nke nwere ike izute chọrọ nke injinia ngwa.
Ogologo eriri ultrasonic plastic ịgbado ọkụ na ezi uche na-ekewa n'ime ọtụtụ ihe hà nhata na ugboro ugboro nke nkwonkwo mmewere e deduced site mbufe matrix usoro.Ọ bụrụ na amaara obosara na ọnụ ọgụgụ na nha nke oghere ahụ, enwere ike iji nhata ahụ mee ka nkwonkwo warara dị mma, si otú a na-enye ihe ndabere usoro maka nhazi nke eriri ahụ.Akwụkwọ a na-enyochakwa mmetụta nke nọmba oghere, obosara oghere na ogologo oghere na nha ịgbado ọkụ site na ihe atụ.Enwere ike ịhụ na usoro a nwekwara mmetụta ụfọdụ na njikarịcha nhazi nke nkwonkwo ịgbado ọkụ
Kewaa uzo mgbe warara ịgbado ọkụ mpi vibration analysis, na ịgbado ọkụ mpi nwere ike kewaa n'ime ọgwụgwụ unit ahu na n'etiti unit cell, na-eji usoro pụtara elasticity usoro na mmetụta nke nnyefe akara, ogologo nke anọ dị iche iche nkeji na-nyere n'otu n'otu na ntụziaka nke elu ogo nke ugboro nhata, ugboro nhata nwere ike iji chepụta a ogologo mmanya ịgbado ọkụ mpi, ma imewe usoro bụ mgbagwoju anya, The nhọrọ nke ụfọdụ parameters dabere na ahụmahụ na-adịghị adaba maka engineering ngwa.N'akwụkwọ a, a na-ekewa nkwonkwo ịgbado ọkụ ahụ n'ọtụtụ nha site na slotting ezi uche dị na ya, a na-enwetakwa nhata ugboro ole nke nkwonkwo ịgbado ọkụ site na usoro matriks nyefe, nke na-enye ihe ndabere maka nhazi nke nkwonkwo ịgbado ọkụ.Nhazi ahụ nwere ngụkọ usoro ihe dị mfe na ihe pụtara anụ ahụ doro anya, nke na-enye usoro dị mfe ma dị mfe maka nhazi nhazi nke warara
nkwonkwo ịgbado ọkụ.
Oge nzipu: Mar-17-2022