Roj hmab shims nres kev co ua ntej nws pib. Lawv qib tshuab tsis sib tsoo hlau tiv thaiv hlau. Lawv nqus cov kev poob siab uas yuav ua rau qaug zog welds, tawg hauv paus, lossis misalign shafts. Peb tau pom lawv tig txoj haujlwm 30-feeb sib dhos rau hauv 90-thib ob kho-thiab tiv thaiv $ 12,000 hauv lub sijhawm tsis tau npaj tseg ntawm cov kab ntim khoom hauv Shandong.
Yog vim li cas roj hmab shims outperform hlau thiab yas nyob rau hauv lub ntiaj teb no setups
Feem ntau engineers ncav cuag steel shims ua ntej. Lawv paub. Lawv nruj. Lawv xav tias "muaj zog." Tab sis rigidity ua tsis tau qhov twg muaj zog. Steel xa high-frequency kev co ncaj nraim mus rau hauv lub hauv paus. Yas shims compress unevenly nyob rau hauv thermal cycling. Roj Hmab-tshwj xeeb yog EPDM, NBR, lossis cov khoom siv silicone nrog 40-70 Shore A hardness-xa tswj kev deflection. Peb cov kev sim kuaj pom pom 65 Shore A EPDM shims txo 1.2-8 kHz resonance peaks los ntawm 42-68% piv rau cov hlau zoo tib yam.
Peb ib zaug hloov 17 stacked stainless shims nyob rau hauv lub CNC coolant twj tso kua mis nrog peb 2-mm roj hmab shims. Kev vibration amplitude poob ntawm 7.3 mm / s RMS rau 2.1 mm / s RMS. Lub twj tso kua mis lub neej txuas ntxiv los ntawm 14 lub hlis mus rau ntau dua 33 lub hlis. Tsis xav tau recalibration. Tsis muaj re-torque tom qab thermal so. Cia li zoo ib yam damping thoob ambient kub ntawm -20 ° C mus rau +80 ° C.
Roj Hmab shims kuj daws precision leveling qhov twg tolerances tseem ceeb. 0.5-mm-thick shim nrog ± 0.03 hli thickness tswj tuav flatness nyob rau hauv 0.05 mm / m - nruj dua feem ntau machined steel daim hlau. Qhov ntawd tseem ceeb thaum kho laser-guided conveyors lossis optical sensor mounts. Koj tsis zom, koj tso. Koj tsis ntsuas ob zaug, koj txheeb xyuas ib zaug.
Peb qhov yuam kev uas ua rau cov roj hmab shims ua tsis tau - thiab yuav ua li cas kom zam tau lawv
Qee tus yuav hais tias roj hmab degrades sai heev nyob rau hauv cov roj los yog UV raug. Qhov ntawd yog qhov tseeb - rau qhov tsis ncaj ncees lawm. Peb tau taug qab qhov ua tsis tiav hauv kev teeb tsa ntawm ntug dej hiav txwv uas cov roj hmab dub shims swelled 300% hauv cov roj diesel. Tab sis NBR (nitrile) shims tiv taus kev immersion tas li nyob rau hauv hydraulic roj rau ntau tshaj 5 xyoo. EPDM tiv thaiv ozone thiab huab cua. Silicone tuav lub voj voog kom tsis muaj menyuam. Kev xaiv cov khoom siv tsis yog xaiv tau - nws yog thawj qhov kev txiav txim siab engineering.
Qhov yuam kev # 1: Tsis quav ntsej compression teeb. Tus nqi qis roj hmab shrinks mus tas li tom qab thauj khoom. Ib qho shim uas compresses 15% ntawm ib hnub thiab lwm 8% tom qab 6 lub hlis tso cov khoom tsis zoo. Peb qhia shims nrog <5% compression teem tom qab 70 teev ntawm 70 ° C ib ASTM D395 Txoj Kev B.
Qhov yuam kev # 2: Siv cov nplaum-rov qab shims nyob ze qhov chaw tshav kub. Cov kua nplaum softens. Lub shim swb. Hloov chaw, peb txiav shims kom paub meej hneev taw-tsis muaj overhang, tsis muaj kev pheej hmoo tev. Rau cov rooj sib txoos bolted, peb pom zoo 1.5 × bolt txoj kab uas hla raws li qhov tsawg kawg nkaus shim dav kom tiv thaiv ntug curling.
Qhov yuam kev # 3: Piv txwv tias tag nrho "rubber" yog sib npaug. Ib tus neeg siv khoom tau sim automotive weatherstripping daim kab xev raws li shim. Nws compressed 60% nyob rau hauv 2 MPa load thiab yeej tsis zoo. Tiag tiag muaj roj hmab shims nqa tensile zog ≥8 MPa thiab elongation ≥300%. Cov lej no tsis yog kev lag luam - lawv yog cov ntawv xeem uas koj tuaj yeem thov ua ntej xaj.
Yuav ua li cas xaiv cov roj hmab shim-ceev
Pib nrog koj lub nra. Tsis tag nrho qhov hnyav - tab sis quab yuam ib square centimeter nyob rau hauv kev ua haujlwm dynamic. Lub 500-kg lub cev muaj zog khiav ntawm 2950 rpm xa ~ 1.8 MPa ncov siab ntawm cov ntsiab lus mounting. Qhov ntawd xav tau 60-70 Shore A NBR, yam tsawg kawg nkaus 3 hli tuab.
Ces phim ib puag ncig:
- Roj raug? Xaiv NBR-kuaj rau ISO 1817 hauv ISO VG 46 hydraulic roj
- Sab nraum zoov tshav ntuj thiab nag? Xaiv EPDM-UV-stabilized, ozone-resistant, ntsuas rau -40 ° C
- Khoom noj khoom haus qib lossis chav huv? Qhia meej FDA-raws li silicone lossis dawb EPDM, Chav Kawm VI kuaj
- Kub kub? Silicone nkaus xwb - ruaj khov rau 200 ° C tas mus li
Thickness los kawg. Tsis txhob muab ntau tshaj ob shims. Txhua qhov sib txuas ntxiv micro-slip thiab txo cov kev ua haujlwm damping. Yog tias koj xav tau 4.5 hli nqa, siv ib qho 4.5-mm shim-tsis yog 3-mm + 1.5-mm khub. Peb npaj cov txheej txheem thicknesses ntawm 0.5 hli mus rau 10 hli nyob rau hauv 0.5-mm increments, tag nrho cov txiav txiav mus rau ± 0.02 hli kam rau ua.
Cov duab raws li muaj nuj nqi. Round shims center bolts. Rectangular shims choj dav hneev taw. Kev cai tuag-txiav profiles tuav tsis tu ncua mounts-zoo li cov nyob rau hauv legacy printing presses los yog textile looms. Peb lub nkoj tsim khoom khiav hauv 72 teev. Prototypes hauv 48.
Roj hmab shims tsis yog accessories - lawv yog engineered interfaces
Lawv zaum qhov twg lub zog raws li cov qauv. Qhov twg cov lus tsa suab ntsib nyob ntsiag to. Qhov twg precision ntsib qhov tseeb. Txhua lub sij hawm ib tug roj hmab shim absorbs 0.3 joules ntawm lub zog kinetic, nws tiv thaiv micro-fractures nyob rau hauv welds nyob ib sab. Txhua millimeter ntawm kev tswj deflection ncua kev coj tus kheej lub neej. Txhua qhov kev tso kawm rov ua dua tau txiav lub sijhawm ua haujlwm.
Hebei Dewell Hlau Khoom Co., LTD tsim cov roj hmab shims nrog stainless hlau fasteners, ntxhua khaub ncaws, thiab thauj tog rau nkoj tshuab -vim kev co pib ntawm kev sib koom tes, tsis yog tus ncej. Lawv qhov chaw nyob hauv Yongnian District tsim cov shims kuaj rau ISO 9001: 2015, nrog batch traceability mus rau raw cov ntaub ntawv ntau. Koj tau txais shim - tsis yog twv.
Lub sij hawm tom ntej vibration spikes, misalignment drifts, los yog leveling noj koj thaum sawv ntxov, nug: Puas yog qhov teeb meem ntawm kev siv tshuab-los yog ib qho teeb meem xaiv khoom? Roj hmab shims yuav tsis kho cov hauv paus tsis zoo lossis hnav cov kabmob. Tab sis lawv yuav kho qhov lawv tau tsim los rau: tig qhov tsis ruaj khov rau hauv qhov ntsiag to, thiab qhov tsis paub tseeb rau hauv qhov raug rov ua dua. Qhov ntawd tsis yooj yim. Qhov ntawd yog engineering leverage.
