Pob screws yog cov khoom zoo tshaj plaws rau kev hloov cov lus tsa suab rau hauv cov lus tsa suab, lossis hloov cov kab lus tawm mus rau hauv cov lus teb.
Pob ntsia hlau yog feem ntau siv kis tau tus mob nyob rau hauv lub cuab tam machinery thiab precision machinery. Nws lub luag haujlwm tseem ceeb yog hloov cov lus tsa suab mus rau hauv cov lus tsa suab, lossis hloov lub zog rau hauv axial repetitive quab yuam, thiab nws muaj cov yam ntxwv ntawm siab precision, thim rov qab thiab ua haujlwm siab. Pob screws yog dav siv nyob rau hauv ntau yam khoom siv thiab precision instruments vim lawv tsis tshua muaj kev sib txhuam.
Nyob rau hauv luv luv, ib lub pob ntsia hlau yog ib tug mechanism uas yuav hloov los ntawm teb cov lus tsa suab mus rau linear tsab ntawv tsa suab los yog los ntawm linear tsab ntawv tsa suab mus rau rotary motion, tab sis nws cov kev siv dav dav yog los hloov cov lus teb rau cov lus tsa suab. Hais txog qhov no, peb paub tias nws ua haujlwm zoo.
Lub pob ntsia hlau yog tsim los ntawm cov ntsia hlau ncej thiab cov txiv ntoo. Cov txiv ntseej yog tsim los ntawm lub pob steel, preload, lub commutator, thiab cov khoom siv plua plav. . Yog xav paub ntxiv, saib daim duab hauv qab no:
Muaj ntau ntau hom pob screws. Ntawm no, peb yuav sau qee qhov ntau dua.
1. Tus kheej-lubricating pob ntsia hlau: tus kheej-lubricating pob ntsia hlau nrog detachable roj tshem tawm cov cuab yeej, tsis tas yuav lubricate pipeline system thiab khoom siv, txo cov roj hloov thiab cov nqi kho cov roj pov tseg;
2. Lub pob ntsia hlau ntsiag to: Lub hauv paus ntsiab lus yog los teeb tsa qhov tshwj xeeb zawj- zoo li lub pob qhov sib txuas ntawm cov pob, uas tuaj yeem cuam tshuam lub suab nrov uas tsim los ntawm kev sib tsoo ntawm cov khoom thiab ua rau lub pob ntsia hlau txav mus ntsiag to thiab du;
3. Siab- pob ntsia hlau ceev: Nws muaj cov yam ntxwv ntawm kev nrawm nrawm, siab nruj, siab- ceev pub, tsis tshua muaj kev vibration thiab suab nrov tsawg. Siv rau kev pub ceev ceev ntawm cov cuab yeej siv tshuab, abrasive siab - ceev txiav cov chaw thiab siab - ceev longitudinal load txiav chaw;
4. Heavy- lub luag haujlwm pob ntsia hlau: Nws tuaj yeem tiv taus qhov hnyav dua axial thiab haum rau txhua yam - hluav taws xob tsim tshuab, cua compressors, semiconductor manufacturing khoom thiab forging manufacturing khoom.
Kuj tseem muaj qhov sib txawv ntawm dov thiab hauv av qib screws. Lub precision ntawm lub pob ntsia hlau yog tsawg, uas yog haum rau lub sij hawm uas lub precision tsis siab. Thiab koj tuaj yeem pom cov ntsia hlau ntawm qib sib tsoo raws li nws lub npe. Siab, haum rau lub sijhawm xav tau siab precision.
Raws li lub pob ncig txoj hauv kev hauv cov txiv ntoo, nws tuaj yeem muab faib ua cov voj voog sab nrauv, sab hauv kev ncig thiab cov hau kawg. Cia kuv tham txog qhov kawg cap hom ua ntej. Qhov no yog ib qho tseem ceeb thaum ntxov, tab sis cov shortcomings yog pom tseeb dua. Nws tau pib raug tshem tawm thiab tsis tshua siv, yog li kuv yuav hais nws me ntsis ntawm no.
We will not talk about the specific structure of the internal and external circulation nuts. After all, we don't need to make screws, we just need to know the difference between the two and their respective advantages and disadvantages.
Qhov zoo thiab qhov tsis zoo ntawm sab hauv thiab sab nraud ncig pob ntsia hlau:
1. Lub pob ntsia hlau sab hauv yog me me, qhov rov qab tau ruaj khov, lub rigidity zoo, thiab nws tsis yooj yim rau hnav;
2. Qhov rov qab stroke ntawm lub pob ntsia hlau yog luv, cov pob me me, qhov ua tau zoo, kev sib txhuam tsis zoo me me, thiab kev sib kis tau zoo;
3. Lub taub sab nraud ntawm cov txiv ntseej sab hauv nrog tib lub nominal txoj kab uas hla yog me dua li ntawm cov kev ncig sab nraud, uas yog tsim rau lub sijhawm uas qhov chaw teeb tsa yog qhov sib txuam;
4. Ib qho kawg ntawm lub pob ntsia hlau ncej uas sib tw nrog cov txiv ntseej sab hauv yuav tsum yog me dua li lub kwj deg;
5. Piv nrog rau lub voj voog sab nraud, qhov cuam tshuam tsis zoo ntawm lub voj voog sab hauv tsis zoo li lub voj voog sab nraud, yog li feem ntau ntawm cov ntsia hlau loj thiab siab -load screws txais lub voj voog sab nraud.
6. Internal ncig hom multifunctional yas zaus converter muaj tej yam uas yuav tsum tau ntawm kev ua hauj lwm kub.
Thaum pib, txoj kev teeb tsa ntawm lub pob ntsia hlau yuav tsum muab tso rau sab nraub qaum, thiab tom qab ntawd kuv xav txog nws. Thaum txiav txim siab qhov kev xaiv ntawm cov ntsia hlau, koj yuav tsum txiav txim siab txoj kev teeb tsa ua ntej, thiab tom qab ntawd txav mus rau pem hauv ntej.
Kuv tau teev ntau ntau txoj kev teeb tsa uas tsis tau hais txog, thiab txais tos ntxiv rau lawv hauv thaj chaw saib.
Cov txheej txheem kev teeb tsa ib txwm yog cov saum toj no plaub. Koj tuaj yeem xaiv txoj kev ntsia hlau ntsia raws li koj tus kheej ua haujlwm. Cov txheej txheem sib txawv muaj cov ntsia hlau sib txawv. Thov nco ntsoov.
Hais txog kev xaiv pob ntsia hlau, koj yuav tsum tham txog nws cov kev tsis sib xws ua ntej, thiab tom qab ntawd koj tuaj yeem pib los ntawm cov kev txwv no los txiav txim nws cov qauv.
1. Nominal txoj kab uas hla ntawm cov ntsia hlau
Nws yog txoj kab uas hla ntawm cov ntsia hlau. Cov kev qhia tshwj xeeb yog (unit: mm): 12, 14, 16, 20, 25, 32, 40, 50, 63, 80, 100. Hais txog lub taub hau ntawm cov ntsia hlau thiab nws cov kabmob muaj peev xwm. Feem ntau, qhov loj ntawm txoj kab uas hla ntawm lub ncej, lub load ntau dua.
The load that a non-coaxial diameter screw can bear can be viewed in the manufacturer's catalog. The relevant parameters are the dynamic load rating and the static load rating. The static load rating refers to the rated load that the screw can withstand in a static state, but we cannot keep the screw still at all times, so here, we basically only care about the dynamic load rating.
Tom qab ntawd, qhov me dua qhov piv ntawm qhov tseeb load rau qhov ntsuas load, qhov ntev ntawm lub neej ntawm cov ntsia hlau. (Faj seeb: Lub load load tsis sawv cev rau qhov siab tshaj plaws load, tab sis feem ntau tsis pub tshaj qhov ntsuas load, txwv tsis pub lub neej kev pab cuam ntawm cov ntsia hlau yuav raug txo)
2. Coj
Leading hais txog qhov kev ncua deb ntawm cov txiv ntoo txav linearly tom qab ib lub kiv puag ncig. Cov txhuas txhuas feem ntau yog (unit: mm): 2, 4, 5, 6, 8, 10, 16, 20, 25, 32, 40. Qhov tsis muaj feem cuam tshuam rau cov hlau lead yog qhov txav ceev ntawm cov txiv ntoo, thiab lub pob ntsia hlau tuaj yeem muab linear thrust.
Qhov loj dua cov hlau lead, qhov nrawm dua qhov kev tawm suab ntawm tib qhov ceev. Qhov kev sib raug zoo ntawm kev suav yog:
v=ri
v: qhov txav ceev ntawm cov txiv ntoo (unit: mm/s)
r: ntsia hlau ceev (unit: r / s)
kuv: Lead (unit: mm)
Kev sib raug zoo ntawm cov hlau lead thiab ntsia hlau thrust:
F = (2 π T n)/ i
F: Thrust (unit: N)
T: Torque provided by the motor (in N•m)
n: kev sib kis tau zoo (kev sib kis tau zoo ntawm lub pob ntsia hlau feem ntau yog 85 feem pua -95 feem pua)
i: lead (lub tsev ntawm no yog m)
3. Qhov tseeb
Pob screws raug cais raws li lub teb chaws / cheeb tsam, thiab cov qib raug yog P1, P2, P3, P4, P5, P7, P10. Nyiv, Kaus Lim Qab Teb thiab Taiwan siv qib JIS, uas yog C0, C1, C2, C3, C5, C7, C10; Cov teb chaws Europe / cheeb tsam tau txais IT0, IT1, IT2, IT3, IT4, IT5, IT7, IT10.
Feem ntau, cov pob ntsia hlau yuav los ntawm peb lub tuam txhab tuaj ntawm Taiwan, uas yog tus nqi ntau dua - zoo, ua raws li Nyiv.
Txoj kev sawv cev qhov tseeb yog: txawm tias koj lub pob ntsia hlau ntev npaum li cas, ib ntu 300mm, qhov yuam kev yog nyob rau hauv qhov tseeb ntawm qib, qhov tseeb ntawm txhua qib yog raws li hauv qab no:
Feem ntau, C7 thiab C10 yog siv rau cov tshuab zoo tib yam, C5 thiab C3 feem ntau yog siv rau CNC cov cuab yeej (ntau C5, feem ntau CNC tshuab cuab yeej hauv Suav teb yog C5), aviation manufacturing khoom, precision projection thiab kev sib koom tes ntsuas cov cuab yeej feem ntau yog siv rau C3, C2 raug (Raws li kuv paub, tsis muaj pob ntsia hlau saum C3 hauv kev lag luam hauv tsev).
Tsis tas li ntawd, qib C7 thiab C10 feem ntau yog tsim los ntawm txoj kev dov, thaum C5 qib thiab siab dua yog tsim los ntawm txoj kev sib tsoo.
Hauv cov ntsiab lus, qib precision ntawm pob ntsia hlau feem ntau siv tsis yog - qauv tsim yog C7 (tsim los ntawm dov lossis qee tus neeg hu ua lawv remanufactured), thaum qib precision ntawm pob screws muaj ntau dua, C5 (tsim los ntawm kev sib tsoo. txoj kev) txaus. Tau kawg, peb tseem yuav tsum tau ua qhov kev soj ntsuam tshwj xeeb ntawm cov teeb meem tshwj xeeb.
4. Preload qib
Also called preload. Regarding the pre-tightening force, we do not need to know the specific pre-tightening force and the pre-tightening force method, but only need to select the pre-tightening force level according to the manufacturer's sample. The higher the preload level, the tighter the fit of the nut and the screw; otherwise, the lower the level, the looser it will be.
Cov hauv paus ntsiab lus ua raws li: txoj kab uas hla loj, ob lub txiv ntseej, siab precision thiab loj tsav torque. Yog tias qhov xwm txheej saum toj no tshwm sim thaum siv cov ntsia hlau, koj tuaj yeem xaiv qhov siab dua ua ntej-tightening force, thiab vice versa.
Tom qab nkag siab txog qhov tseem ceeb ntawm cov ntsia hlau saum toj no, peb tuaj yeem xaiv raws li peb xav tau.
The first step is to determine the screw type suitable for your working conditions according to the various screw application scenarios mentioned in the "Classification of Ball Screws"; at the same time, you can also determine the screw's accuracy grade (usually C7) and pre- Tight grade
Cov kauj ruam thib ob yog los txiav txim siab txog txoj kab uas hla ntawm lub pob ntsia hlau raws li kev thauj khoom;
Qhov thib peb kauj ruam yog los txiav txim cov xaim raws li qhov txav ceev uas yuav tsum tau muaj los ntawm kev thauj khoom. Tom qab txiav txim siab cov xaim, txiav txim siab lub torque yuav tsum tau muab los ntawm lub tshuab tsav tsheb raws li kev sib raug zoo ntawm lub zog thiab cov xaim.
Cov ntsiab lus yog raws li nram no:
Cov khoom txav vertically nce thiab nqis, qhov hnyav yog 60Kg, thiab qhov yuav tsum tau txav ceev yog 1m / s.
1) Yog hais tias lub servo lub cev muaj zog raug xaiv raws li tus tsav, qhov ntsuas ceev yog 3000r / min=50r / s, raws li cov qauv: v=ri, txiav txim siab cov hlau yuav yog 20;
2) Then calculate the size of the load: assuming that the acceleration and deceleration time of the servo motor is set to 0.3s, the acceleration is 3.3m/s², and the load F = 600 plus 60 3.3 = 798N (the friction force is ignored here);
3) Raws li tus qauv: F=(2πT n) / i, n siv 90 feem pua, thiab tus nqi suav yog T≈2.82N•m. Cov lus nug 1KW servo lub cev muaj zog torque ntawm 3.18N•m, uas ua tau raws li qhov yuav tsum tau ua.
Saum toj no, hom pob ntsia hlau yog qhov pib txiav txim siab. Thaum kawg, txiav txim siab qhov ntev ntawm cov ntsia hlau raws li qhov yuav tsum tau muaj stroke thiab txoj kev teeb tsa ntawm cov ntsia hlau saum toj no.
1. When installing, be careful not to damage the tooth surface of the screw; in addition, after purchasing an ordinary screw, the nut and the screw will come together, so pay special attention to the installation. Do not separate the nuts and screws, otherwise you will not be able to install them yourself. If you accidentally separate it, please don't use it forcefully, you can contact the supplier and let them install it.
2. Lubrication: muaj hlau txhuam ntawm lub pob thiab cov ntsia hlau, yog li lubricating roj los yog roj yuav tsum tau ntxiv ntawm ob, txwv tsis pub nws yuav txo tau lub neej kev pab cuam;
Txoj kev ntxiv ntxiv yog phau ntawv refueling thiab tsis siv neeg refueling. Cov neeg ua haujlwm tsis tu ncua refuel manually; tsis siv neeg refueling yuav tsum tau ib tug tsis siv neeg refueling system, uas yuav tsum tau piav nyob rau hauv kom meej tom qab.
