Ultrasonic vuam fixture tsim tsis yog hais txog bolting hlau rau lub rooj ntev zaum. Nws yog hais txog lub sij hawm precision, tswj lub zog hloov mus, thiab txhua yam sympathy ntawm tooling thiab ib feem geometry. Ntawm Botou Haijun Hlau Khoom Co., Ltd., peb tau tsim ntau tshaj 1,200 kev cai ultrasonic vuam fixtures rau cov neeg siv khoom nyob rau hauv automotive trim, cov cuab yeej kho mob vaj tse, thiab cov neeg siv khoom siv hluav taws xob-txhua qhov siv tau raws li cov khoom siv tiag tiag, tsis yog CAD simulations xwb.
Vim li cas Fixture Design ua los yog rhuav koj lub zog Weld
Feem ntau ua tsis tiav ultrasonic welds taug qab rov qab mus rau qhov sib tw - tsis yog lub horn, tsis yog lub tshuab hluav taws xob. Peb pom nws ntau zaus: ib tus neeg siv khoom qhia txog qhov tsis sib xws ntawm lub zog vuam, flash to, lossis ib feem deformation. Lawv hloov lub transducer, recalibrate lub amplitude, txawm hloov resins-tsuas yog nrhiav tau lub hauv paus ua rau zaum hauv qab ib feem. Ib qho kev tsim kho tsis zoo qhia txog kev tswj tsis tau cov kev vibration, tsis sib npaug clamping siab, lossis thermal distortion thaum nyob. Ib tus neeg siv khoom lub ntsuas hluav taws xob tau tawg ntawm txoj kab vuam 37% ntawm lub sijhawm. Lawv fixture siv ca aluminium daim hlau uas tsis muaj qhov chaw nyem. Tom qab rov tsim kho lub hauv paus nrog lub hauv paus nruj tuning thiab 0.02 hli kam rau-match locator pins, tsis ua hauj lwm poob rau 0.8%.
Cov kev txwv tseem ceeb ntawm lub cev ua rau txhua qhov kev txiav txim siab:
Resonance zam: Fixtures yuav tsum nyob qis dua 5 kHz ntuj zaus los tiv thaiv kev sib txuas nrog 20-40 kHz weld voj voog Clamp quab yuam faib: Lub siab yuav tsum mloog zoo nyob rau hauv ± 0.3 hli ntawm qhov sib koom ua ke - tsis hla tag nrho cov hneev taw Thermal cais: Aluminium 6061-T6 ua haujlwm rau qis-kawg prototyping; hardened steel H13 yog yuav tsum tau rau> 50,000 cycles Tsib txoj cai tsim tsis sib tham (los ntawm cov khoom siv tiag tiag)
Peb tswj hwm cov cai no ntawm txhua qhov kev tshuaj xyuas kev teeb tsa-tsis muaj kev zam:
Nrhiav thawj zaug, clamp thib ob: Siv peb-point kinematic mounting (ob dowel pins + ib lub qhov) ua ntej siv cov clamping quab yuam. Peb tau ntsuas txog 0.15 hli lateral hloov nyob rau hauv fixtures uas clamp ua ntej nrhiav - txaus rau misalign ib tug 0.5 hli zog thawj coj. Muab cov khoom siv CTE rau ib feem: Yog tias vuam PC/ABS, tsis txhob siv cov hlau tsis muaj hlau tshwj tsis yog them nyiaj. Thermal expansion mismatch ua rau micro-hloov thaum rov ua dua. Peb tus qauv kho? Inlay 304 stainless locators rau hauv anodized 6061-T6 lub cev. Tsis muaj ntab ntaws ze ntawm thaj chaw weld: Txhua qhov chaw tsis muaj kev ruaj ntseg nyob rau hauv 8 hli ntawm kev sib koom ua ke ua ib txoj hauv kev tsis muaj kev vibration. Peb tshuab tag nrho cov chaw qhov chaw nyob rau hauv ib qho kev teeb tsa-tsis txhob ntxiv cov ntxig tom qab ua haujlwm. Dwell-time kam rau ua stacking teeb meem: Ib qho 0.05 hli sib txawv ntawm ib feem thiab fixture puag multiplies rau 0.12 hli deflection nyob rau hauv 2,500 N clamp load. Peb qhia meej qhov chaw tiaj tus ≤0.01 hli dhau ntawm thaj chaw ua haujlwm - thiab xyuas nws nrog CMM ua ntej xa khoom. Kev pab cuam > zoo nkauj: Peb xa tag nrho cov kab pneumatic sab hauv thiab siv hex-key-siv tau fasteners-txawm tias nws ntxiv 12 vib nas this rau kev sib dhos. Cov kws tshaj lij hauv teb tau hloov cov chaw nyob hauv qab 90 vib nas this. Cov neeg sib tw "huv" tsim yuav tsum muaj tag nrho disassembly thiab rov calibration. Thaum Tawm-hauv-Chaw Fixtures Fail-thiab Yuav Ua Li Cas Hloov
Qee pawg sim cov khoom siv txhuas txhuas nrog cov clamps kho tau. Nws ua haujlwm - rau 300 lub voj voog. Tom qab ntawd tus pins qhov chaw hnav, lub hauv paus flexes, thiab weld sib xws erodes. Peb taug qab qhov kev lwj no: qhov nruab nrab rov ua dua qhov poob yog 17% los ntawm lub voj voog 1,200 ntawm cov khoom siv tsis muaj zog. Cov lej yog qhov tseeb. Rau kev khiav ntau tshaj 5,000 units, kev cai ultrasonic vuam fixture tsim them rov qab nyob rau hauv 8 hloov los ntawm kev txo seem thiab downtime.
Tab sis customization tsis txhais hais tias complexity. Peb cov khoom siv tau zoo tshaj plaws ua raws li qhov yooj yim hierarchy:
Base phaj: 40 hli tuab H13 steel, tshav kub-kho rau 48-52 HRC, av tiaj tus mus rau 0.005 hli Locator qhov system: Interchangeable hardened steel inserts, nias-haum nrog 0.002 hli cuam tshuam Clamping mechanism: Pneumatic thooj voos kheej kheej nrog txoj hauj lwm sensors-tsis muaj phau ntawv levers Ib feem ejection: Caij nplooj ntoos hlav-loaded nqa pins actuated los ntawm tib lub voj voog cua raws li clamping Tsim validation Koj tuaj yeem ntseeg-tsis yog cia siab rau
Kev kos duab tsis yog qhov teeb meem. Peb validate txhua tus tsim nyob rau hauv peb theem:
Ua ntej, kev tshuaj ntsuam xyuas hauv SolidWorks Simulation - lees paub tias tsis muaj hom resonant muaj nyob nruab nrab ntawm 15-45 kHz. Qhov thib ob, kev sim qauv ntawm peb Branson 2000X nrog cov khoom siv tiag tiag thiab cov khoom siv ntau ntau. Thib peb, kev ntsuas lub neej nrawm: 10,000 weld voj voog ntawm 120% lub zog nominal, ntsuas qhov chaw hnav, lub hauv paus deflection, thiab weld shear zog poob.
Cov txheej txheem no ntes tau qhov teeb meem tseem ceeb hauv kev ua liaj ua teb sensor bracket tsis ntev los no. Modal tsom xam flagged ib torsional hom ntawm 32.7 kHz - nyob rau hauv 0.3 kHz ntawm 33 kHz horn zaus. Yog tsis muaj kev kho, resonance yuav muaj amplified horn taub hau los ntawm 4 ×. Peb ntxiv ob lub 8 hli stiffening tav-tsim nyob rau theem ob xeem. Qhov kawg fixture xa 99.94% thawj-pass tawm los ntawm 42,000 units.
Pib Txoj Cai—Ua ntej Txiav Thawj
Nqa koj cov ntawv luam tawm rau peb, sib koom ua ke kos duab, lub sijhawm lub sijhawm lub hom phiaj, thiab ntim txhua xyoo. Tsis pub dhau 72 teev, koj yuav tau txais daim ntawv tshaj tawm DFM uas qhia txog cov yam ntxwv tseem ceeb: kev tso tawm ntawm tus thawj coj lub zog, kev hloov pauv ntawm phab ntsa tuab, thiab qhov muaj peev xwm ua rau muaj kev ntxhov siab. Tsis muaj kev muag khoom. Tsis muaj template PDFs. Tsuas yog engineering tawm tswv yim hauv av nyob rau hauv 14 xyoo ntawm txias-tsim metallurgy thiab geometric kam rau ua kev tswj.
Kev ntseeg tau ntawm cov yas sib dhos pib qhov twg cov khoom ua tau raws li cov hlau. Tsis yog nrog cov kev xav ntawm software-tab sis nrog cov ntaub ntawv ntsuas CMM, lub ntiaj teb thermal caij tsheb kauj vab, thiab cov khoom siv tsim los tuav cov kev ua siab ntev nruj dua li koj cov txheej txheem molding. Qhov ntawd yog li cas ultrasonic vuam fixture tsim tsis yog ib qho chaw nqi-thiab dhau los ua koj cov txheej txheem tswj tau zoo tshaj plaws.
