Nyob rau hauv lub ntiaj teb no ntawm manufacturing thiab mechanical engineering, ua tej yam haum ua ke yog qhov tseem ceeb.Qhov ntawd yog qhov uas xov txheem tuaj rau hauv kev ua si.Lawv zoo li cov kev cai rau yuav ua li cas cov spirals ntawm ib lub bolt phim cov spirals hauv cov txiv ntoo.Cov kev cai no tseem ceeb heev vim lawv paub tseeb tias cov khoom sib koom ua ke yog txoj cai, thiab lawv tuaj yeem ua txoj haujlwm uas lawv xav ua yam tsis muaj kev tawg.
To taub xov xwm txheej txheem
Thread Standards yog dab tsi?
Cia peb pib los ntawm kev nkag siab txog cov txheej txheem xov dab tsi .Yooj yim muab tso, lawv yog cov txheej txheem uas txhais cov duab, qhov loj me, thiab qhov siab ntev ntawm cov xov siv hauv bolts, screws, thiab txiv ntseej.Xav txog lawv zoo li phau ntawv qhia ua cov xov uas haum ua ke zoo kawg nkaus.Cov qauv no xyuas kom meej tias lub bolt los ntawm ib lub tuam txhab yuav haum rau hauv cov txiv ntoo los ntawm lwm tus, tswj kev sib xws thiab raug nyob thoob plaws ntau yam kev lag luam.
Lub luag haujlwm ntawm Xov Standards hauv Kev Lag Luam
Cov qauv qauv ua lub luag haujlwm tseem ceeb hauv lub ntiaj teb ntawm kev tsim khoom thiab kev tsim kho tshuab .Lawv yog cov neeg tsis paub zoo hauv kev sib sau ua ke ntawm txhua yam ntawm cov khoom siv hluav taws xob ntawm lub rooj tsav xwm hauv Circuit Court mus rau lub cev loj ntawm cov dav hlau.Hauv kev lag luam xws li tsheb tsim khoom , siv dav hlau , thiab txawm tias lub dav hlau dav hlau , cov qauv no xyuas kom meej tias txhua qhov fastener , ntsia liaj qhov rooj thiab ntsia hlau , thiab cov cuab yeej siv ua ke ua ke nrog siab precision thiab lub zog .Qhov no yog qhov tseem ceeb tsis yog tsuas yog tsim kom muaj kev sib txuas nruj, tab sis kuj yog kev tswj xyuas kev ruaj ntseg thiab kev nyab xeeb ntawm cov khoom.
Keeb kwm luv luv ntawm Unified Thread Standard (UTS)
Tam sim no, cia peb taug kev sai sai ntawm txoj kab keeb kwm.Unified Thread Standard (UTS) tau los ua ib txoj hauv kev los ua kom yooj yim thiab ua qauv cov xov hlau hauv Tebchaws Meskas thiab Canada.Ua ntej UTS, muaj ntau cov qauv xov, uas yog qhov tsis meej pem.UTS coj txhua tus ntawm tib nplooj ntawv nrog ob hom tseem ceeb: Unified National Coarse (UNC) thiab Unified National Fine (UNF).
l UNC Xov : Paub txog lawv cov lus ntxhib , cov xov no zoo rau kev siv dav dav.Lawv yooj yim dua los tsim thiab ua haujlwm, ua rau lawv muaj kev xaiv nrov hauv kev lag luam uas xav tau kev daws teeb meem ceev uas tuaj yeem tiv taus kev ntxhov siab thiab kev sib hloov ceev.
l UNF Xov : Cov no muaj lub suab zoo , muab lub zog siab thiab qhov tseeb .Lawv feem ntau siv rau hauv daim ntawv thov xws li aerospace thiab precision instruments , qhov twg txhua millimeter suav.
Ob lub UNC thiab UNF threads poob rau hauv Unified Screw Thread Series , uas zoo li ib tsev neeg loj ntawm cov xov hlau tsim los ua haujlwm sib haum xeeb.
Chart It Out
Txhawm rau pom, xav txog qhov Screw Thread Chart .Daim ntawv qhia no teev tag nrho qhov ntau thiab tsawg thiab hom xov hauv qab UTS, suav nrog Unified coarse pitch threads thiab Unified fine pitch threads .Nws yog ib tug mus-rau cov cuab yeej rau engineers thiab manufacturers ua txoj cai xov xaiv rau lawv cov kev siv tshwj xeeb.
Threading los ntawm kev siv
Hauv cov ntsiab lus siv tau, cov qauv xov yog tom qab qhov tshwm sim hauv yuav luag txhua yam khoom siv tshuab.Piv txwv li, hauv cov khoom siv hluav taws xob , qhov tseeb ntawm UNF threads ua kom muaj kev sib raug zoo ntawm cov khoom.Hauv cov ntawv loj dua, zoo li hauv tsheb lossis dav hlau , UNC threads pab txhawb kev tsim cov chassis thiab cov cav tov..
Vim Li Cas Qhov Tseem Ceeb
Kev nkag siab txog cov qauv xov, tshwj xeeb tshaj yog qhov txawv ntawm UNF thiab UNC , yog qhov tseem ceeb.Nws tsis yog tsuas yog ua kom ob daim sib haum ua ke;Nws yog hais txog kev ua kom muaj kev ruaj ntseg , , thiab kev ua haujlwm zoo .Txawm hais tias nws yog kev ua haujlwm siab tshaj plaws hauv aerospace lossis kev sib koom ua ke hauv kev tsim kho tshuab , txoj cai xov hom - nws yog UNF lossis UNC - tuaj yeem ua rau txhua qhov sib txawv ntawm kev ua haujlwm thiab kev ua haujlwm ntev ntawm cov khoom.Hauv cov ntsiab lus, cov qauv xov zoo li UNF thiab UNC nyob rau hauv Unified Thread Standard yog qhov tseem ceeb hauv kev tsim cov khoom lag luam uas ntseeg tau thiab nyab xeeb.Lawv xyuas kom meej tias txhua yam ntawm cov ntsia hlau me tshaj plaws nyob rau hauv lub rooj tsav xwm Circuit Court mus rau qhov loj tshaj plaws ntsia liaj qhov rooj nyob rau hauv ib lub dav hlau yog nyob rau hauv lub luag hauj lwm, muab qhov tsim nyog lub zog , precision , thiab kuj yuav tsum tau nyob rau hauv ntau yam kev siv.
Unified Thread Standard (UTS)
Unified Thread Standard (UTS) yog zoo li phau ntawv txoj cai rau cov xov siv hauv North America.Nws yog qhov ua kom paub tseeb tias lub hau ntswj los ntawm ib qho chaw haum rau hauv cov txiv ntoo los ntawm lwm qhov.Cov qauv no tseem ceeb heev hauv kev lag luam xws li aerospace , automotive manufacturing , thiab txawm nyob rau hauv cov khoom siv hluav taws xob.
Cheebtsam ntawm UTS
UTS muaj peb yam tseem ceeb:
1. Xov Form : Qhov no yog cov duab ntawm cov xov.Xav txog nws zoo li tus qauv ntawm lub ntsia liaj qhov rooj los yog lub hau ntswj.Nws yog ib qho tseem ceeb heev vim nws txiav txim siab seb ob qhov chaw yuav zoo li cas ua ke.
2. Series : Qhov no yog hais txog ntau hom xov.Hauv UTS, muaj ob lub ntsiab tseem ceeb - Unified National Coarse (UNC) thiab Unified National Fine (UNF).Cov coarse series (UNC) muaj tsawg dua threads ib nti, thaum cov nplua series (UNF) muaj ntau dua.Qhov sib txawv no cuam tshuam rau qhov kev sib txuas yuav muaj zog npaum li cas thiab nruj npaum li cas.
3. Cov chav kawm ntawm Fit : Qhov no zoo li qib ntawm snugness ntawm cov xov.Nws yog hais txog yuav nruj npaum li cas los yog xoob lawv.Muaj ntau chav kawm, txhua qhov tsim nyog rau kev siv sib txawv.
UTS hla North America
Hauv North America, UTS yog txhua qhov chaw.Nov yog qhov nws siv:
l Kev Tsim Khoom : Cov tuam txhab siv UTS los ua txhua yam.Los ntawm me me Circuit Court boards mus rau loj aircraft engine qhov chaw.
l Precision Instruments : Hauv gadgets thiab cov khoom siv uas xav tau super siab precision , zoo li hauv aerospace lossis aviation cov cuab yeej , UTS pab ua cov khoom uas haum ua ke zoo kawg nkaus.
l Automotive thiab Mechanical Engineering : Tsheb, tsheb thauj khoom, thiab txawm tias cov cav tov hauv cov chaw tsim khoom xav tau cov khoom uas haum raws li txoj cai.UTS ua rau qhov no tshwm sim, txawm hais tias nws yog rau lub cav qhov chaw , chassis Cheebtsam , lossis txawm lub cev qauv.
l Cov Khoom Siv Hluav Taws Xob : Hauv cov khoom siv me me, UTS ua lub luag haujlwm loj heev.Nws xyuas kom meej tias tag nrho cov me me bolts thiab screws hauv cov khoom siv hluav taws xob sib haum ua ke zoo.
UTS hauv Action
Xav tias koj tab tom tsim ib tug neeg hlau.Koj xav tau bolts thiab screws uas yuav tuav nws ua ke kom nruj.Koj yuav xaiv txoj cai UNC lossis UNF xov raws li tus neeg hlau yuav ua.Nws puas yuav tsum tau tiv thaiv ntau kev ntxhov siab ?Los yog nws yuav tsum ua kom meej tiag tiag?UTS coj koj los ua cov kev xaiv no.
UTS zoo li cov lus uas txhua tus neeg tsim khoom hauv North America hais.Nws yog hais txog kev ua kom paub tseeb tias txhua yam haum ua ke zoo, txawm tias nws yog lub hau me me hauv lub xov tooj smartphone lossis lub bolt loj hauv lub dav hlau.Cov qauv no ua kom cov khoom muaj kev nyab xeeb, muaj zog, thiab ua haujlwm zoo.
Cov yam ntxwv ntawm UNF Xov
Nkag siab txog UNF Xov Xwm: Kev Sib Koom Siab Fine Pitch
Cia peb dhia mus rau hauv UNF Xov Xwm , paub txog lawv qhov Kev Sib Koom Siab Fine Pitch .Cov xov no yog cov ncauj lus kom ntxaws ntawm cov xov ntiaj teb.Lawv muaj ntau threads ib nti dua UNC threads , uas txhais tau hais tias lawv yog finer thiab ntau ze spaced.Qhov kev tsim zoo no tsis yog rau kev ua yeeb yam xwb;nws yog txhua yam hais txog precision.
Daim ntawv thov thiab qhov zoo ntawm UNF Xov
UNF threads yog qhov kev xaiv mus rau hauv cov xwm txheej uas muaj qhov tseeb thiab lub zog yog qhov tseem ceeb.Ntawm no yog qhov lawv ci:
l Aerospace : Hauv dav hlau thiab dav hlau, txhua qhov me me tseem ceeb.UNF threads tau siv ntawm no rau lawv qhov tseeb.
l Precision Instruments : Xav txog cov khoom siv hauv chav kuaj lossis cov cuab yeej kho mob.UNF threads pab cov gadgets no kom raug thiab txhim khu kev qha.
l Automotive Manufacturing : Nyob rau hauv tsheb, tshwj xeeb tshaj yog nyob rau hauv engine qhov chaw thiab hluav taws xob Cheebtsam , UNF threads muab lub caij nyoog haum.
l Cov Khoom Siv Hluav Taws Xob : Txawm tias nyob rau hauv cov rooj sib tham me me , UNF threads tseem ceeb rau kev ua kom txhua yam txuas nrog nruj.
Nthuav dav dav thiab qhov ntev ntawm UNF Xov
Thaum peb tham txog qhov ntev ntawm UNF threads, peb tab tom saib ntawm Screw Thread Chart .Daim ntawv qhia no teev tag nrho qhov ntau thiab tsawg - txoj kab uas hla, suab, thiab ntev.Txoj kab uas hla ntawm UNF threads tuaj yeem nyob ntawm qhov me me mus rau qhov loj heev, tab sis qhov tseem ceeb yog lub suab zoo - ntau cov xov hauv txhua nti ntawm cov ntsia hlau.
Qhov Superiority ntawm UNF Threads hauv Precision Applications
Nyob rau hauv lub ntiaj teb no ntawm high-end manufacturing, UNF threads zoo li cov VIPs.Lawv muab:
l Lub zog muaj zog : Vim lawv lub suab zoo, lawv tuaj yeem ua haujlwm ntau dua thiab kev ntxhov siab.
l Tight Connection : Ntau threads txhais tau tias tuav nruj dua.Qhov no yog qhov tseem ceeb hauv qhov chaw uas yuav tsum tsis txhob xoob, tshwj xeeb tshaj yog nyob rau hauv vibration.
l Precision : Nrog ntau threads, muaj tsawg zaus ntawm kev txav los yog misalignment.Qhov no yog qhov tseem ceeb hauv cov cuab yeej precision thiab cov cuab yeej siv dav hlau.
Hauv Action
Xav txog tias koj tab tom sib sau ua ke lub drone high-tech.Txhua qhov yuav tsum tau ua kom haum zoo kawg nkaus.UNF threads pab koj ntsia hlau txhua qhov nrog qhov tseeb, kom ntseeg tau tias lub drone ruaj khov thiab txhim khu kev qha.
UNF threads ANSI B1.1
| Loj Diameter (hauv) | Xov ib nti (tpi) | Loj Diameter (hauv) | Loj Diameter (mm) | Kais Laum Loj (mm) | Pitch (mm) |
| #0 - 80 | 80 | 0.060 | 1.524 | 1.25 | 0.317 |
| #1 - 72 | 72 | 0.073 | 1.854 | 1.55 | 0.353 |
| #2 - 64 | 64 | 0.086 | 2.184 | 1.90 | 0.397 |
| #3 - 56 | 56 | 0.099 | 2.515 | 2.15 | 0.453 |
| #4-48 | 48 | 0.112 | 2.845 | 2.40 | 0.529 |
| #5 - 44 | 44 | 0.125 | 3.175 | 2.70 | 0.577 |
| #6 - 40 | 40 | 0.138 | 3.505 | 2.95 | 0.635 |
| #8-36 | 36 | 0.164 | 4.166 | 3.50 | 0.705 |
| #10-32 : kuv | 32 | 0.190 | 4.826 | 4.10 | 0.794 |
| #12-28 | 28 | 0.216 | 5.486 | 4.70 | 0.907 |
| 1/4' - 28 | 28 | 0.250 | 6.350 | 5.50 | 0.907 |
| 5/16' - 24 | 24 | 0.313 | 7.938 | 6.90 | 1.058 |
| 3/8' - 24 | 24 | 0.375 | 9.525 | 8.50 | 1.058 |
| 7/16' - 20 | 20 | 0.438 | 11.112 | 9.90 | 1.270 |
| 1/2' - 20 | 20 | 0.500 | 12.700 | 11.50 | 1.270 |
| 9/16' - 18 | 18 | 0.563 | 14.288 | 12.90 | 1.411 |
| 5/8' - 18 | 18 | 0.625 | 15.875 | 14.50 | 1.411 |
| 3/4' - 16 | 16 | 0.750 | 19.050 | 17.50 | 1.587 |
| 7/8' - 14 | 14 | 0.875 | 22.225 | 20.40 | 1.814 |
| 1'- 12 | 12 | 1.000 | 25.400 | 23.25 | 2.117 |
| 1 1/8' - 12 | 12 | 1.125 | 28.575 | 26.50 | 2.117 |
| 1 1/4' - 12 | 12 | 1.250 | 31.750 | 29.50 | 2.117 |
| 1 3/8' - 12 | 12 | 1.375 | 34.925 | 32.75 | 2.117 |
| 1 1/2' - 12 | 12 | 1.500 | 38.100 | 36.00 | 2.117 |
Txhawm rau ua kom tiav, UNF threads yog txhua yam hais txog kev nthuav dav thiab qhov tseeb.Lawv yog cov tsis paub txog tus phab ej hauv ntau qhov kev siv thev naus laus zis thiab kev siv zog siab, los ntawm qhov tob ntawm qhov chaw hauv lub dav hlau mus rau qhov tseem ceeb ntawm lub tshuab ua haujlwm siab.Lawv lub suab zoo thiab lub zog zoo dua ua rau lawv tsis tuaj yeem nyob hauv lub ntiaj teb ntawm kev sib dhos precision thiab high-end manufacturing.
Tshawb nrhiav UNC Xov Xwm
UNC Xov Xwm: Lub Koom Haum Coarse Pitch Piav Qhia
UNC threads sawv cev rau Unified National Coarse threads.Xav txog lawv li qhov ruaj khov, txhim khu kev qha hauv tsev neeg xov.Lawv muaj tsawg dua threads ib nti piv rau UNF threads , uas txhais tau hais tias lawv yog coarser.Qhov no coarseness tsis yog ib tug drawback;nws yog qhov ua tau zoo ntxiv hauv ntau qhov xwm txheej.
Kev siv ntau yam ntawm UNC Xov Xwm
UNC threads haum rau qhov twg?Nov yog saib ceev:
l Kev Tsim Kho : Hauv cov tsev thiab txuas hniav, UNC threads yog zoo meej rau tuav cov khoom hnyav ua ke.
l General Machinery : Hauv cov tshuab uas tsis xav tau super precision, zoo li qee qhov ntawm lub tsheb lossis cov khoom siv loj, UNC threads ua haujlwm zoo.
l Cov Khoom Siv Khoom Siv : Cov khoom peb siv txhua hnub, xws li rooj tog lossis khoom siv hauv tsev, feem ntau muaj UNC threads khaws cia ua ke.
Lub zog thiab kam rau ua hauv UNC Threading
UNC threads paub txog ob yam: lub zog thiab kam rau ua.
l Lub zog : Lawv muaj zog txaus los tuav ua ke cov qauv loj, uas yog vim li cas koj pom lawv hauv kev tsim kho thiab cov tshuab hnyav.
l Kev zam txim : Lawv zam txim ntau dua li cov xov zoo.Qhov no txhais tau hais tias lawv tuaj yeem daws cov av, kev puas tsuaj, thiab yooj yim dua rau cov ntsia hlau thiab tshem tawm, uas yog qhov zoo hauv qhov chaw ntxhib.
Kev txiav txim siab tsim khoom rau UNC Xov Xwm
Thaum nws los ua tej yam nrog UNC threads, muaj ob peb lub ntsiab lus kom nco ntsoov:
l Yooj yim ntawm Kev Tsim Khoom : Lawv yooj yim dua thiab ua kom sai dua li cov xov zoo.Qhov no yog qhov loj heev thaum koj ua ntau txhiab tus ntsia hlau lossis bolts.
l Nqi-zoo : Vim lawv ua tau yooj yim dua, lawv feem ntau raug nqi tsawg.Qhov no yog qhov tseem ceeb hauv cov khoom uas koj xav tau ntau cov fasteners tab sis tsis xav tau super zoo precision.
l Versatility : Lawv muaj ntau yam.Koj tuaj yeem siv UNC threads hauv ntau yam khoom, los ntawm cov tshuab hnyav rau cov khoom siv niaj hnub.
UNC threads raws li ANSI B1.1
| Loj Diameter (hauv) | Xov ib nti (tpi) | Loj Diameter (hauv) | Loj Diameter (mm) | Kais Laum Loj (mm) | Pitch (mm) |
| #1 - 64 | 64 | 0.073 | 1.854 | 1.50 | 0.397 |
| #2 - 56 | 56 | 0.086 | 2.184 | 1.80 | 0.453 |
| #3-48 | 48 | 0.099 | 2.515 | 2.10 | 0.529 |
| #4-40 | 40 | 0.112 | 2.845 | 2.35 | 0.635 |
| #5 - 40 | 40 | 0.125 | 3.175 | 2.65 | 0.635 |
| #6 - 32 | 32 | 0.138 | 3.505 | 2.85 | 0.794 |
| #8 - 32 | 32 | 0.164 | 4.166 | 3.50 | 0.794 |
| #10 – 24 | 24 | 0.190 | 4.826 | 4.00 | 1.058 |
| #12-24 : kuv | 24 | 0.216 | 5.486 | 4.65 | 1.058 |
| 1/4' - 20 | 20 | 0.250 | 6.350 | 5.35 | 1.270 |
| 5/16' - 18 | 18 | 0.313 | 7.938 | 6.80 | 1.411 |
| 3/8' - 16 | 16 | 0.375 | 9.525 | 8.25 | 1.587 |
| 7/16' - 14 | 14 | 0.438 | 11.112 | 9.65 | 1.814 |
| 1/2' - 13 | 13 | 0.500 | 12.700 | 11.15 | 1.954 |
| 9/16' - 12 | 12 | 0.563 | 14.288 | 12.60 | 2.117 |
| 5/8' - 11 | 11 | 0.625 | 15.875 | 14.05 | 2.309 |
| 3/4' - 10 | 10 | 0.750 | 19.050 | 17.00 | 2.540 |
| 7/8' - 9 | 9 | 0.875 | 22.225 | 20.00 | 2.822 |
| 1'- 8 | 8 | 1.000 | 25.400 | 22.85 | 3.175 |
| 1 1/8' - 7 | 7 | 1.125 | 28.575 | 25.65 | 3.628 |
| 1 1/4' - 7 | 7 | 1.250 | 31.750 | 28.85 | 3.628 |
| 1 3/8' - 6 | 6 | 1.375 | 34.925 | 31.55 | 4.233 |
UNC threads zoo li cov neeg ua haujlwm txhim khu kev qha ntawm lub ntiaj teb xov xov.Tej zaum lawv yuav tsis muaj cov ntsiab lus zoo ntawm UNF xov, tab sis lawv tsim rau nws nrog lawv lub zog, kam rau ua, thiab ntau yam.Los ntawm kev ua kom cov skyscrapers sawv kom ntseeg tau tias koj lub rooj noj mov yog qhov ruaj khov, UNC threads yog ib qho tseem ceeb ntawm cov khoom siv niaj hnub thiab kev tsim kho loj.
Sib piv UNF thiab UNC Xov Xwm
Qhov sib txawv tseem ceeb hauv Pitch thiab lub zog
Thaum peb saib UNF (Unified National Fine) thiab UNC (Unified National Coarse) xov, cov khoom tseem ceeb uas sawv tawm yog suab thiab lub zog..
l Pitch : UNF threads muaj lub suab zoo dua, lub ntsiab lus ntau threads ib nti.UNC threads yog coarser nrog tsawg threads ib nti.
l Lub zog : Lub suab zoo ntawm UNF threads muab lawv lub zog ntau dua hauv kev nro.Lawv tuaj yeem tuav ntau lub zog yam tsis muaj kev tawg piv rau UNC xov.
Haum rau kev siv sib txawv
Kev xaiv ntawm UNF thiab UNC threads nyob ntawm seb lawv yuav siv qhov twg.
l UNF Xov : Zoo tagnrho rau cov ntawv thov uas xav tau siab precision thiab lub zog, zoo li hauv aerospace lossis precision instruments.
l UNC Xov : Zoo dua haum rau kev tsim kho thiab cov khoom lag luam uas qhov tseeb tsis tshua muaj qhov tseem ceeb, tab sis kev ua haujlwm ntev thiab kev siv yooj yim yog qhov tseem ceeb.
Kev Ntsuas Tus Kheej: UNF vs. UNC
Self-locking yog ib qho tseem ceeb nyob rau hauv ib puag ncig uas kev co yuav loosen threads.
l UNF Threads : Lawv lub suab zoo muaj peev xwm ua rau nws tus kheej zoo dua, ua rau lawv haum rau qhov chaw muaj kev vibration siab xws li dav hlau lossis tshuab.
l UNC Xov : Thaum lawv tuaj yeem kaw tus kheej, lawv lub suab coarser ua rau lawv tsis tshua muaj txiaj ntsig hauv qhov no piv rau UNF threads.
Sealing thiab Tensile Strength sib piv
Sealing thiab tensile lub zog yog qhov tseem ceeb hauv kev txiav txim siab txoj xov zoo.
l UNF Xov : Muab lub zog tensile zoo dua vim lawv lub suab zoo, tso cai rau kev sib txuas kom nruj thiab muaj zog dua.
l UNC Xov : Lawv lub suab coarser ua rau lawv tsis haum rau cov kev xav tau muaj zog, tab sis lawv tseem ua tau zoo rau ntau daim ntawv thov.
Pitch thiab Thread Density Comparison
Qhov ntom ntawm threads ib nti yog qhov tseem ceeb hauv kev ua haujlwm.
l UNF Threads : Cov xov ntau dua txhais tau tias yog cov xov zoo dua, ua rau muaj zog dua thiab meej dua.
l UNC Threads : Cov xov qis qis nrog cov xov coarser, uas yooj yim rau kev tswj thiab tsim khoom, tshwj xeeb tshaj yog nyob rau hauv ntau qhov ntau.
Daim ntawv qhia rau siv
Xav txog qhov Screw Thread Chart .Daim ntawv qhia no yuav qhia tias UNF cov xov zoo li cas nrog cov xov tooj ntau dua ntawm ib nti, thaum UNC threads muaj qhov sib txawv ntawm cov xov.
kev xaiv ntawm UNF thiab UNC threads boils mus rau qhov tshwj xeeb xav tau ntawm daim ntawv thov.UNF threads, nrog lawv cov suab zoo, muaj zog dua thiab precision, zoo tagnrho rau high-tech thiab high-stress ib puag ncig.UNC threads, ntawm qhov tod tes, muab kev yooj yim ntawm kev siv thiab kev tsim khoom, ua rau lawv tsim nyog rau kev tsim kho thiab cov khoom uas siab precision tsis yog qhov tseem ceeb.Ob hom muaj lawv qhov tshwj xeeb zoo, ua rau lawv indispensable nyob rau hauv lawv cov kev siv.
Ntsuas thiab txheeb xyuas UNF thiab UNC Xov Xwm
Cov cuab yeej ntsuas cov xov
Thawj yam ua ntej, txhawm rau ntsuas cov xov kom raug, koj xav tau cov cuab yeej zoo.Feem ntau yog:
l Calipers : Cov cuab yeej no ntsuas lub cheeb sab nraud ntawm cov xov.Lawv zoo li cov thawj coj zoo nkauj uas tuaj yeem qhia koj raws nraim qhov loj npaum li cas.
l Xov Gauges : Cov no zoo li cov qauv rau cov xov.Koj phim cov xov tiv thaiv lub ntsuas kom pom nws qhov loj thiab suab.
Kauj ruam-by-Step Phau ntawv qhia txog kev txheeb xyuas UNF thiab UNC Xov
Kev txheeb xyuas seb cov xov puas yog UNF lossis UNC ncaj qha nrog cov kauj ruam no:
1. Ntsuas qhov Diameter : Siv cov calipers los ntsuas cov kab sab nraud ntawm cov xov.Qhov no qhia koj tias nws dav npaum li cas.
2. Suav cov xov : suav cov xov tooj ntawm ib nti ntev.Qhov no yog qhov koj pom qhov txawv - UNF threads yuav muaj ntau threads ib nti dua UNC.
3. Siv ib lub xov tooj ntsuas : Muab cov xov rau ib lub xov ntsuas.Qhov ntsuas yuav lees paub lub suab thiab seb nws puas yog UNF (zoo) lossis UNC ( ntxhib).
4. Kos Daim Ntawv Qhia : Koj tuaj yeem xa mus rau Screw Thread Chart rau kev sib piv ceev.Daim ntawv qhia no qhia txog UNF thiab UNC xov nrog lawv cov suab thiab txoj kab uas hla.
Lub tswv yim los xyuas kom meej qhov ntsuas qhov tseeb
Tau txais cov kev ntsuas kom raug yog qhov tseem ceeb.Nov yog qee cov lus qhia:
l Ntxuav Cov Xov : Ua ntej ntsuas, xyuas kom cov xov huv si.Cov av tuaj yeem cuam tshuam koj qhov ntsuas.
l Ntsuas Ob Lub Sijhawm : Txhawm rau zam qhov yuam kev, ntsuas ob peb zaug thiab ntsuas qhov nruab nrab.
l Siv cov cuab yeej zoo : nqis peev hauv cov khoom siv hluav taws xob zoo thiab cov ntsuas ntsuas kom raug ntau dua.
l Nyob ruaj khov : Thaum ntsuas, tuav koj cov cuab yeej kom tsis txhob plam thiab nyeem ntawv tsis raug.
Thaum koj ua haujlwm ntawm ib qhov project, paub seb puas yuav siv UNF lossis UNC threads tuaj yeem ua lossis tawg koj txoj haujlwm.Kev ntsuas thiab txheeb xyuas cov xov no kom raug ua kom ntseeg tau tias koj cov fasteners haum zoo kawg nkaus, txawm tias koj tab tom tsim cov rooj tog zaum, kho lub tsheb, lossis txawm tias sib sau cov khoom siv dav hlau.Kev ntsuas zoo ua rau muaj kev sib txuas ruaj khov, ruaj khov, thiab nyab xeeb hauv txhua yam koj tsim lossis kho.
Kev siv tswv yim thiab kev nkag siab txog kev lag luam
UNF Threads hauv Precision Adjustments thiab Fixations
UNF (Unified National Fine) xov zoo li cov kws tshaj lij hauv xov ntiaj teb.Ntawm no yog qhov lawv yeej sawv tawm:
l Aerospace thiab Aviation : Hauv dav hlau thiab dav hlau, txhua qhov me me yuav tsum ua kom zoo.UNF threads yog siv nyob rau hauv lub cav qhov chaw thiab lub cev qauv rau lawv cov high precision.
l Automotive Manufacturing : Nyob rau hauv tsheb, tshwj xeeb tshaj yog nyob rau hauv lub ilv qhov chaw zoo li hluav taws xob Cheebtsam , UNF threads muab lub meej haum xav tau.
l Cov Khoom Siv Hluav Taws Xob : Rau cov khoom siv thiab cov khoom siv, qhov twg txhua millimeter suav, UNF threads yog qhov tseem ceeb rau lawv qhov tseeb thiab kev sib txuas nruj.
UNC Threads nyob rau hauv Mass Production of Fasteners
Thaum nws los ua ntau cov fasteners sai thiab ua tau zoo, UNC (Unified National Coarse) threads yog qhov mus-rau:
l Kev tsim kho : Hauv cov tsev thiab cov vaj tse, UNC threads yog siv rau hauv bolts thiab screws rau lawv lub zog thiab yooj yim ntawm kev siv.
l General Machinery : Rau cov cav tov uas yuav tsum tau muaj zog thiab txhim khu kev qha fasteners, UNC threads muab lub zoo meej tshuav nyiaj li cas ntawm lub zog thiab yooj yim ntawm tuav.
Kev lag luam-Specific Siv Case rau UNF thiab UNC Xov
Txhua hom xov muaj nws tus kheej superpowers rau txawv industries:
l UNF Xov : Nyob rau hauv cov cuab yeej precision thiab aerospace , qhov twg txhua yam teeb meem, UNF threads yog qhov tseem ceeb rau lawv lub zog siab thiab precision.
l UNC Xov : Hauv kev lag luam xws li kev tsim kho thiab tshuab hnyav, qhov twg cov fasteners yuav tsum tawv thiab txhim khu kev qha, UNC threads yog cov nyiam.
Cov kev sib tw hauv Machining thiab Assembly
Ua hauj lwm nrog threads tsis yog ib txwm yooj yim.Nov yog qee qhov kev sib tw:
l Precision hauv Machining : Ua UNF threads yuav tsum muaj siab precision hauv CNC machining .Ib qho yuam kev me me tuaj yeem ua qhov sib txawv loj.
l Kev tuav thiab sib dhos : UNC threads, ua coarser, yooj yim rau kev lis tab sis yuav tsum tau ua tib zoo machined kom lawv haum zoo nyob rau hauv rougher daim ntaub ntawv.
l Kev xaiv cov khoom : Kev xaiv cov khoom siv rau ob qho tib si UNF thiab UNC threads yog qhov tseem ceeb.Nws cuam tshuam cov xov lub zog , ruaj khov , thiab tiv thaiv kev ntxhov siab.
Txawm hais tias nws yog qhov yuav tsum tau ua kom tiav cov ntawv thov ntawm UNF threads hauv aerospace thiab cov khoom siv hluav taws xob lossis lub zog ntawm UNC threads hauv kev tsim kho thiab tshuab, ob qho tib si ua lub luag haujlwm tseem ceeb hauv lawv cov haujlwm.Kev nkag siab txog lawv cov kev siv tshwj xeeb thiab cov kev sib tw yuav pab ua qhov kev xaiv txoj xov zoo rau txhua daim ntawv thov tshwj xeeb, kom ntseeg tau qhov ua tau zoo thiab kev nyab xeeb ntawm cov khoom kawg.
Xaiv Txoj Cai Xov Hom
Tej yam yuav tsum tau xav txog thaum xaiv ntawm UNC thiab UNF
Xaiv hom xov zoo - UNC lossis UNF - yog qhov tseem ceeb.Nov yog yam xav txog:
1. Daim Ntawv Thov Xav Tau : Koj puas ua haujlwm rau qee yam uas xav tau siab precision, zoo li ib feem ntawm lub dav hlau ?Mus rau UNF.Rau kev tsim kho dav dav, UNC yog koj thawj koom ruam zoo tshaj.
2. Kev Xav Tau Lub Zog : UNF threads muab lub zog ntau dua vim lawv lub suab zoo, ua rau lawv zoo tagnrho rau cov ntawv thov kev ntxhov siab.
3. Ib puag ncig los ua ke : Yog tias ib puag ncig ua rau av lossis puas tsuaj, UNC cov xov coarser yog kev zam txim ntau dua.
4. Kev Tsim Nyog Muaj Peev Xwm : Koj puas muaj cov cuab yeej siv rau kev ua tiav UNF threading?Yog tsis yog, UNC tej zaum yuav siv tau ntau dua.
Kev lag luam Standards thiab Conventions
Txhua lub lag luam muaj nws tus kheej nyiam:
l Aerospace : UNF feem ntau yog siv rau nws qhov siab precision thiab lub zog.
l Kev tsim kho : UNC yog qhov nyiam rau nws txoj kev ruaj khov thiab yooj yim ntawm kev siv.
l Automotive : Ib qho kev sib xyaw ntawm ob qho tib si, nyob ntawm qhov chaw tsim khoom.
Sib piv xov hom nrog bolts thiab ceev
Tau txais kev sib koom tes yog qhov tseem ceeb:
l Tshawb xyuas Compatibility : Nco ntsoov xyuas kom lub bolt lub xov hom sib phim cov txiv ntoo.UNF bolt xav tau UNF txiv ntoo.
l Xa mus rau Screw Thread Chart : Daim ntawv qhia no pab hauv kev sib txuam cov xov kom raug, qhia suab thiab xov ceev.
l Xav txog cov khoom siv : Cov khoom siv ntawm lub ntsia liaj qhov rooj thiab cov txiv ntoo yuav tsum sib haum rau kev sib txuas nruj.
Hauv Xyaum
Cia peb hais tias koj tab tom sib sau ua ib qho khoom siv hluav taws xob.Koj yuav xaiv tau UNF xov rau lawv cov suab zoo thiab qhov tseeb .Ntawm qhov tod tes, yog tias koj tab tom tsim lub txee, UNC threads yuav tsim nyog rau lawv lub zog thiab yooj yim ntawm kev tuav.
Kev xaiv ntawm UNC thiab UNF threads los ntawm kev nkag siab txog cov kev cai tshwj xeeb ntawm koj qhov project, cov qauv kev lag luam, thiab ua kom muaj kev sib raug zoo ntawm txhua qhov kev koom tes.Txawm hais tias nws yog rau cov cuab yeej zoo meej lossis cov khoom siv ruaj khov, cov xov zoo yog ua kom ruaj khov , lub zog , thiab kev ua tiav tag nrho ntawm koj lub rooj sib txoos.
Xaus
Raws li peb sau, cia peb nco ntsoov lub luag haujlwm tseem ceeb ntawm UNF thiab UNC xov hauv ntau qhov kev lag luam.Cov xov no, me me raws li lawv xav tau, yog qhov tseem ceeb hauv kev ua kom muaj kev nyab xeeb, kev ua tau zoo, thiab kev ua haujlwm ntawm suav tsis txheeb.
Recap ntawm qhov tseem ceeb ntawm UNF thiab UNC Xov Xwm hauv Kev Lag Luam
l UNF Xov : Lawv lub suab zoo ua rau lawv zoo tagnrho rau kev ua haujlwm siab thiab muaj zog-yuav tsum tau siv xws li hauv aerospace , precision instruments , thiab kev tsim tsheb..
l UNC Xov : Paub txog lawv cov lus ntxhib, cov xov no yog qhov tseem ceeb hauv kev tsim kho, cov tshuab hnyav, thiab cov khoom siv niaj hnub rau lawv qhov yooj yim ntawm kev siv thiab muaj zog.
Kev xav zaum kawg ntawm kev xaiv thiab siv txoj xov zoo rau cov ntawv thov tshwj xeeb
Xaiv txoj xov zoo - UNF lossis UNC - los rau:
l Nkag siab txog Daim Ntawv Thov : Cov kev xav tau tshwj xeeb ntawm koj qhov project, txawm tias nws yog qhov tseeb lossis qhov muaj zog, yuav coj koj xaiv.
l Cov Qauv Kev Lag Luam : Kev paub txog kev lag luam cov lus pom zoo pab ua kom paub kev xaiv.
l Compatibility : Xyuas kom meej tias cov xov, bolts, thiab txiv ntseej koj xaiv tau sib xws yog qhov tseem ceeb rau kev sib dhos ua tiav.
Cov xov yuav me me, tab sis lawv qhov cuam tshuam loj heev.Los ntawm lub dav hlau nce siab saum peb mus rau cov khoom siv hluav taws xob uas peb siv txhua hnub, UNF thiab UNC threads tuav peb lub ntiaj teb ua ke.Yog li lwm zaus koj tab tom ua haujlwm ntawm qhov project, muab kev xav rau cov phab ntsa me me no.Koj qhov kev xaiv ntawm UNF thiab UNC tuaj yeem ua rau txhua qhov sib txawv ntawm lub zog, qhov tseeb, thiab lub neej ntev ntawm koj qhov tsim.
FAQ
Q: Qhov txawv ntawm UNF thiab UNC threads yog dab tsi?
A: UNF threads yog finer;UNC threads yog coarser.UNF muaj ntau threads ib nti.UNC feem ntau siv rau kev siv.
Q: Thaum twg kuv yuav tsum siv UNF threads tshaj UNC threads?
A: Siv UNF kom zoo dua nro thiab kho kom zoo dua.UNF nyiam nyob rau hauv daim ntawv thov xav tau ntau dua precision.
Q: Kuv yuav ntsuas cov xov suab li cas rau UNF thiab UNC xov?
A: Siv lub ntsuas ntsuas los suav cov xov ib nti.Ntsuas qhov peak-rau-peak nrug ntawm cov xov.Sib piv nrog cov qauv paub.
Q: Puas yog UNF thiab UNC threads sib hloov tau?
A: Tsis yog, lawv muaj cov xov sib txawv.Kev hloov pauv tuaj yeem ua rau muaj kev puas tsuaj.Ib txwm phim txoj xov zoo.
Q: Cov cuab yeej twg kuv xav tau los ua haujlwm nrog UNF thiab UNC xov?
A: Koj yuav xav tau cov kais dej thiab tuag, xov ntsuas, thiab cov wrenches.Xyuas kom tseeb tias cov cuab yeej phim cov xov hom.Lubrication kuj tseem yuav tsim nyog.
