Tsim ib weld test fixture tsis yog hais txog bolting qhov chaw ua ke thiab vam tias yuav tau txais txiaj ntsig zoo ib yam. Nws yog hais txog kev tsim lub cev txuas ntxiv ntawm koj lub hom phiaj engineering - qhov twg txhua qhov chaw, tus pin, thiab clamping quab yuam txhais ncaj qha rau hauv qhov rov ua tau zoo, qhov ruaj khov, thiab kev soj ntsuam kev ntseeg siab. Ntawm Botou Haijun Hlau Khoom Co., Ltd., peb tau tsim ntau tshaj 270 kev cai weld test fixtures rau Tier-1 automotive lwm tus neeg, cov khoom siv ua liaj ua teb OEMs, thiab kev lag luam automation integrators. Nyob rau hauv txhua rooj plaub, tsis ua raws li qhov tseem ceeb ntawm cov qauv tsim tau ua rau ib lossis ntau qhov tshwm sim: misaligned weld seams, tsis raug lees paub / tsis nyeem ntawv thaum lub sijhawm siv tau, lossis raug nqi rov ua dua tom qab tsim khoom.
Anchor The Part — Tsis Yog Tuav Nws
Feem ntau pab pawg pib nrog clamping lub tswv yim - tab sis qhov ntawd yog rov qab. Ua ntej, txhais cov txheej txheem datum siv qhov chaw ua haujlwm: lub flange mounting, mating tus thawj coj, los yog qhov tseem ceeb qhov qauv uas txiav txim seb cov khoom haum li cas hauv kev sib dhos zaum kawg. Peb siv peb-point nrhiav ntawm cov thawj datums, yeej tsis yog plaub-vim plaub lub ntsiab lus induce distortion nyob rau hauv nyias-gauge sheet hlau. Rau ib tug raug bracket ua los ntawm 2.0 hli txias-kuav los tiag steel, peb qhia hardened dowel pins nrog ± 0.005 hli txoj kab uas hla kam rau ua, nias-haum rau hauv av bushings zaum nyob rau hauv kev ntxhov siab-relieved txhuas 6061-T6 puag daim hlau. Vim li cas aluminium? Nws tshuab huv si, dampens vibration thaum lub sij hawm neeg hlau vuam, thiab hnyav 60% tsawg dua hlau rau tus neeg teb xov tooj tuav. Peb tsis txhob cam khwb cia hlau hauv paus tshwj tsis yog tias thermal huab hwm coj yuav tsum tau rau high-duty-cycle test-nws brittleness txaus ntshai micro-fractures ze tapping qhov tom qab rov torque cycles.
Tswj Thermal Growth-Ua ntej Thawj Arc Strikes
Vuam generates localized cua sov mus txog 1500 ° C. Lub zog ntawd tsis ploj mus - nws tsiv mus. Unchecked, nws warps fixture locators, hloov tus pin txoj hauj lwm txog li 0.08 hli, thiab invalidates txhua tom qab ntsuas. Peb kho: cov tswv yim tooj liab alloy inserts ntawm weld ze thaj tsam. Copper lub thermal conductivity (401 W / m·K) rub tawm cua sov tsib zaug sai dua li txhuas. Peb embed OFHC tooj liab blocks ncaj qha rau hauv qab vuam cov pob qij txha, anchored nrog M4 cap screws thiab cais los ntawm lub ntsiab qauv siv 0.5 hli PTFE shims. Qhov no tsis yog theoretical-peb ntsuas 32% qis dua thermal drift hla 120-lub voj voog endurance tests piv rau tag nrho-aluminium fixtures. Cov nyiaj tshwj xeeb: tooj liab qhov tsis muaj hlau nplaum tiv thaiv arc tshuab cuam tshuam thaum TIG validation khiav.
Tsim kom muaj pov thawj-tsis yog siv xwb
A weld test fixture yuav tsum ua pov thawj nws tus kheej qhov tseeb. Txhua tus qauv tsim muaj xws li kev txheeb xyuas cov yam ntxwv: precision-ground reference flats (Ra ≤ 0.4 µm), CMM-sphere sphere lub hom phiaj ntawm qhov tseem ceeb GD&T callouts, thiab tshem tau calibration tuav traceable rau NIST qauv. Ib tus neeg siv tau hais tias "tsis muaj qhov ntxiv" - yog li peb tau ua Ø6.35 hli spherical recesses rau hauv qhov chaw ntawm qhov chaw. Cov no lees txais tus qauv CMM styli yam tsis muaj kev hloov pauv thiab muaj sia nyob 10,000+ kev tshuaj xyuas. Peb kuj tseem koom ua ke ceev-tso tawm cov vaj huam sib luag nyob rau sab hauv gage blocks, cia cov neeg ua haujlwm tshawb xyuas qhov chaw nyob qhov siab li ntawm 90 vib nas this - tsis yog 20 feeb dismantling tag nrho lub rooj sib txoos. Yog tias koj tsis tuaj yeem ntsuas qhov kev sib tw ntawm qhov kev ncaj ncees sai dua li koj tshawb xyuas qhov chaw, koj ntseeg txoj hmoo, tsis yog cov ntaub ntawv.
Match Fixture Rigidity rau Koj Cov Txheej Txheem - Tsis Yog Koj Cov Nyiaj Txiag
Rigidity tsis yog hais txog thickness - nws yog hais txog lub sij hawm ntawm inertia faib. Lub 30 hli tuab steel phaj zoo li nruj kom txog thaum koj ntxiv 120 mm cantilevered caj npab rau kev siv hluav taws xob neeg hlau. Tom qab ntawd deflection hits 0.12 mm nyob rau hauv 45 N ntawm vuam quab yuam. Peb cov kev daws teeb meem: hybrid tsim. Lub hauv paus loj = 25 hli tuab 7075-T6 txhuas (siab zog-rau-qhov hnyav). Qhov tseem ceeb locator rails = bonded stainless hlau 304 strips (yield zog 505 MPa). Cov kab ntawv cog lus siv aerospace-qib epoxy nrog 0.05 hli tswj qhov sib txawv - txheeb xyuas ntawm ultrasonic pulse-echo scanning. Qhov no muab 2.3 × siab zog torsional dua li monolithic txhuas ntawm 18% qhov hnyav. Peb siv tau txhua tus qauv tsim nrog FEA modal tsom xam lub hom phiaj thawj zaug ntawm lub cev> 120 Hz - saum toj no cov vuam neeg hlau ua haujlwm ntau yam. Tsis muaj resonance. Tsis muaj drift. Tsis muaj kev zam txim.
Txhua weld test fixture peb xa cov nkoj nrog tag nrho cov pob metrology: raws li-tsim CMM daim ntawv qhia, thermal drift nkhaus, thiab repeatability kawm nyob rau hauv peb tus neeg teb xov tooj thiab ob qho kev hloov. Vim tias qhov tseeb tsis yog daim ntawv thov tshwj xeeb - nws yog qhov muaj sia nyob siv lub ntiaj teb tiag. Botou Haijun Hlau Khoom Co., Ltd. tsim fixtures engineers ntseeg siab thaum seem nqi tshaj $1,200 ib tug phem weld pawg. Yog koj tam sim no weld test fixture yuav tsum tau rov ua dua txhua hnub lossis ua tsis tiav GD&T kev tshuaj xyuas tom qab 500 lub voj voog, qhov tsis zoo tsis nyob hauv koj cov txheej txheem - nws nyob hauv lub hauv paus. Pib muaj.
