Cov Nyhuv Polygon ntawm Cov Chains Roller thiab Nws Cov Kev Qhia Tawm

Cov Nyhuv Polygon ntawm Cov Chains Roller thiab Nws Cov Kev Qhia Tawm

Hauv thaj chaw ntawm kev sib kis tshuab,cov saw hlausiv dav hauv cov kab tsim khoom lag luam, tshuab ua liaj ua teb, kev tsim tsheb, kev xa khoom, thiab lwm yam kev siv vim lawv cov qauv yooj yim, muaj peev xwm thauj khoom ntau, thiab siv nyiaj tsawg. Txawm li cas los xij, thaum lub sijhawm ua haujlwm ntawm cov saw hlau, ib qho xwm txheej hu ua "polygon effect" cuam tshuam ncaj qha rau kev sib kis du, qhov tseeb, thiab lub neej ua haujlwm, ua rau nws yog ib qho tseem ceeb uas cov engineers, cov neeg ua haujlwm yuav khoom, thiab cov neeg saib xyuas khoom siv yuav tsum nkag siab zoo.

Ua ntej, Qhia Txog Qhov Cuam Tshuam Polygon: Qhov Cuam Tshuam Polygon ntawm Cov Chains Roller yog dab tsi?

Yuav kom nkag siab txog qhov polygon effect, peb yuav tsum xub saib xyuas cov qauv kis ntawm cov saw hlau. Cov saw hlau feem ntau muaj cov sprocket tsav, sprocket tsav, thiab cov saw hlau. Thaum lub sprocket tsav tig, qhov sib txuas ntawm cov hniav sprocket nrog cov txuas saw hlau xa lub zog mus rau lub sprocket tsav, uas ua rau cov txheej txheem ua haujlwm tom ntej. Qhov hu ua "polygon effect," tseem hu ua "polygon effect error," hais txog qhov xwm txheej hauv kev kis cov saw hlau qhov twg cov kab winding ncig lub sprocket tsim cov duab zoo li polygon, ua rau lub saw hlau qhov ceev tam sim ntawd thiab lub sprocket tsav lub angular velocity kom pom kev hloov pauv tas li. Hais yooj yim, thaum lub sprocket tig, cov saw hlau tsis nce mus rau qhov ceev linear tas li, tab sis, zoo li txav mus rau ntug ntawm polygon, nws qhov ceev hloov pauv tas li. Raws li, lub sprocket tsav kuj tig ntawm qhov ceev angular tas li, tab sis hloov chaw muaj kev hloov pauv tas li hauv qhov ceev. Qhov kev hloov pauv no tsis yog qhov ua tsis zoo tab sis yog tus yam ntxwv ntawm cov qauv kis las ntawm cov menyuam, tab sis nws qhov cuam tshuam tsis tuaj yeem tsis quav ntsej.

Qhov Thib Ob, Tshawb Nrhiav Keeb Kwm: Lub Ntsiab Cai ntawm Cov Nyhuv Polygon

Cov nyhuv polygon pib los ntawm cov yam ntxwv ntawm cov saw hlau thiab sprockets. Peb tuaj yeem nkag siab meej txog nws cov txheej txheem tsim los ntawm cov kauj ruam tseem ceeb hauv qab no:

(I) Kev Teeb tsa Meshing ntawm Chain thiab Sprocket

Thaum ib txoj saw hlau dov ncig lub sprocket, vim tias lub sprocket yog ib qho khoom sib xyaw ua ke uas muaj ntau cov hniav, thaum txhua qhov txuas ntawm txoj saw hlau sib txuas nrog ib tug hniav sprocket, txoj kab nruab nrab ntawm txoj saw hlau tsim ib txoj kab kaw uas muaj ntau txoj kab tawg. Txoj kab no zoo li ib lub polygon ib txwm muaj (yog li ntawd lub npe "polygon effect"). Tus naj npawb ntawm sab ntawm "polygon" no sib npaug rau tus naj npawb ntawm cov hniav ntawm lub sprocket, thiab qhov ntev ntawm sab ntawm "polygon" sib npaug rau lub suab saw hlau (qhov deb ntawm qhov chaw nruab nrab ntawm ob lub rollers sib ze).

(II) Kev Sib Kis ntawm Lub Sprocket Tsav Tsheb

Thaum lub sprocket tsav tsheb tig ntawm qhov ceev ntawm lub kaum sab xis ω₁, qhov ceev ntawm txhua tus hniav ntawm lub sprocket yog qhov tas li (v₁ = ω₁ × r₁, qhov twg r₁ yog lub suab ntawm lub sprocket tsav tsheb). Txawm li cas los xij, vim tias qhov chaw sib txuas ntawm cov saw thiab sprocket hloov pauv tas li raws li cov hniav sprocket, qhov deb ntawm qhov chaw sib txuas mus rau qhov chaw nruab nrab ntawm sprocket (piv txwv li, lub vojvoog tig tam sim ntawd) hloov pauv tas li thaum lub sprocket tig. Tshwj xeeb, thaum cov saw hlau sib dhos zoo rau hauv qhov hauv qab ntawm cov hniav sprocket, qhov deb ntawm qhov chaw sib txuas mus rau qhov chaw nruab nrab ntawm sprocket yog qhov tsawg kawg nkaus (kwv yees li lub vojvoog ntawm cov hniav sprocket); thaum cov saw hlau sib txuas nrog cov hniav sprocket, qhov deb ntawm qhov chaw sib txuas mus rau qhov chaw nruab nrab ntawm sprocket yog qhov siab tshaj plaws (kwv yees li lub vojvoog ntawm cov hniav sprocket). Qhov kev hloov pauv tas li no hauv lub vojvoog tig tam sim ntawd ua rau muaj kev hloov pauv hauv qhov ceev ntawm cov saw hlau.

(III) Kev Hloov Pauv ntawm Lub Ncej Tsav Tsheb

Vim tias cov saw hlau yog ib qho khoom siv sib kis uas ruaj khov ( suav tias tsis tuaj yeem nthuav dav thaum lub sijhawm sib kis), qhov ceev ntawm cov saw hlau tam sim ntawd raug xa mus rau lub sprocket uas tau tsav. Qhov ceev ntawm lub kaum sab xis ω₂ ntawm lub sprocket uas tau tsav, qhov ceev ntawm lub kab ncaj qha v₂ ntawm cov saw hlau, thiab qhov kev sib hloov tam sim ntawd r₂' ntawm lub sprocket uas tau tsav ua tiav qhov kev sib raug zoo ω₂ = v₂ / r₂'.

Vim tias qhov ceev linear v₂ ntawm cov saw hlau hloov pauv, qhov kev sib hloov tam sim ntawd r₂' ntawm qhov chaw sib txuas ntawm lub sprocket tsav kuj hloov pauv tas li nrog kev sib hloov ntawm lub sprocket tsav (lub hauv paus ntsiab lus zoo ib yam li lub sprocket tsav). Ob yam no ua haujlwm ua ke los ua rau qhov ceev angular ω₂ ntawm lub sprocket tsav kom pom cov kev hloov pauv tas li nyuaj dua, uas ua rau cuam tshuam rau qhov ruaj khov ntawm tag nrho cov kab ke kis.

Qhov thib peb, Kev Nthuav Qhia Pom: Cov Kev Qhia Tshwj Xeeb ntawm Cov Nyhuv Polygon

Qhov cuam tshuam ntawm polygon qhia tau ntau txoj hauv kev hauv cov txheej txheem kis tau tus mob roller saw. Nws tsis tsuas yog cuam tshuam rau qhov tseeb ntawm kev kis tau tus mob xwb tab sis kuj ua rau muaj kev co, suab nrov, thiab lwm yam teeb meem. Kev ua haujlwm ntev kuj tseem tuaj yeem ua rau cov khoom siv hnav sai dua thiab txo lub neej ntawm cov khoom siv. Cov tsos mob tshwj xeeb suav nrog cov hauv qab no:

(1) Kev Hloov Pauv ntawm Kev Ceev Kis

Qhov no yog qhov qhia ncaj qha thiab tseem ceeb tshaj plaws ntawm cov nyhuv polygon. Ob qho tib si lub saw hlau qhov ceev tam sim ntawd thiab lub sprocket tsav qhov ceev tam sim ntawd qhia txog kev hloov pauv tas li thaum lub sprocket tig. Qhov zaus ntawm cov kev hloov pauv no muaj feem cuam tshuam nrog lub sprocket qhov ceev tig thiab tus lej ntawm cov hniav: qhov siab dua qhov ceev ntawm sprocket thiab tsawg dua cov hniav, qhov siab dua qhov zaus ntawm qhov kev hloov pauv ceev. Ntxiv mus, qhov loj ntawm qhov kev hloov pauv ceev kuj muaj feem cuam tshuam nrog lub suab saw thiab tus lej ntawm cov hniav sprocket: qhov loj dua qhov suab saw thiab tsawg dua cov hniav sprocket, qhov loj dua qhov loj ntawm qhov kev hloov pauv ceev.

Piv txwv li, hauv lub kaw lus tsav tsheb uas muaj cov hniav me me (piv txwv li, z = 10) thiab lub suab loj (piv txwv li, p = 25.4mm), thaum lub sprocket tsav tsheb tig ntawm qhov ceev ceev (piv txwv li, n = 1500 r / min), lub saw hlau qhov ceev tam sim ntawd tuaj yeem hloov pauv ntau yam, ua rau pom "dhia" hauv lub tshuab ua haujlwm tsav (piv txwv li, txoj siv sia conveyor, lub tshuab cuab yeej spindle, thiab lwm yam), cuam tshuam loj heev rau qhov tseeb ntawm kev sib kis thiab kev ua haujlwm zoo. (2) Kev cuam tshuam thiab kev co

Vim yog qhov hloov pauv sai sai ntawm qhov ceev ntawm cov saw hlau (los ntawm ib qho kev taw qhia zigzag mus rau lwm qhov), cov khoom siv cuam tshuam tsis tu ncua raug tsim thaum lub sijhawm sib txuas ntawm cov saw hlau thiab sprocket. Cov khoom siv cuam tshuam no raug xa mus los ntawm cov saw hlau mus rau cov khoom xws li sprocket, ncej, thiab bearings, ua rau muaj kev co thoob plaws hauv lub kaw lus kis.

Qhov zaus ntawm kev co kuj muaj feem cuam tshuam nrog lub sprocket qhov kev sib hloov ceev thiab tus lej ntawm cov hniav. Thaum lub zaus kev co los txog lossis sib xws nrog cov khoom siv lub zaus ntuj, resonance tuaj yeem tshwm sim, ntxiv amplitude kev co. Qhov no tsis tsuas yog cuam tshuam rau kev ua haujlwm ib txwm ntawm cov khoom siv tab sis kuj tuaj yeem ua rau loosening thiab puas tsuaj rau cov khoom, thiab txawm tias ua rau muaj kev phom sij kev nyab xeeb.

(3) Kev Ua Phem Rau Suab Nrov

Kev cuam tshuam thiab kev co yog cov ua rau muaj suab nrov. Thaum lub sijhawm kis tau cov saw hlau, qhov cuam tshuam ntawm kev sib txuas ntawm cov saw hlau thiab sprocket, kev sib tsoo ntawm cov suab nrov ntawm cov saw hlau, thiab lub suab nrov uas tsim los ntawm kev co xa mus rau lub thav duab khoom siv txhua yam ua rau muaj suab nrov ntawm cov kab ke kis tau cov saw hlau.

Qhov ntau dua qhov cuam tshuam ntawm cov duab ntauwd (piv txwv li, lub suab loj dua, cov hniav tsawg dua, qhov ceev ntawm kev sib hloov siab dua), qhov cuam tshuam thiab kev co hnyav dua, thiab qhov ntau dua qhov suab nrov tsim. Kev raug rau lub sijhawm ntev rau cov suab nrov siab tsis yog tsuas yog cuam tshuam rau cov neeg teb xov tooj lub pob ntseg xwb tab sis kuj cuam tshuam rau kev tswj hwm kev tsim khoom thiab kev sib txuas lus hauv qhov chaw, txo qis kev ua haujlwm zoo.

(IV) Kev puas tsuaj ntawm cov khoom siv ntau ntxiv

Cov khoom siv cuam tshuam thiab kev co ua rau cov khoom siv xws li cov saw hlau, cov sprockets, cov shafts, thiab cov bearings hnav sai dua. Tshwj xeeb:

Kev Hnav Cov Hlau: Kev cuam tshuam ua rau muaj kev ntxhov siab ntawm cov menyuam hlau, cov bushings, thiab cov pins, ua rau kev hnav sai dua thiab maj mam ua rau lub suab ntawm cov hlau ntev dua (feem ntau hu ua "kev ncab cov hlau"), ua rau qhov cuam tshuam polygon hnyav dua.

Kev Hnav Khaub Ncaws ntawm Sprocket: Kev cuam tshuam thiab kev sib txhuam ntau zaus ntawm cov hniav sprocket thiab cov saw hlau tuaj yeem ua rau cov hniav hnav, cov hniav ntse, thiab cov hauv paus hniav tawg, ua rau kev ua haujlwm ntawm sprocket meshing txo qis.

Kev Hnav Khaub Ncaws ntawm Ncej thiab Bearing: Kev co thiab kev cuam tshuam ua rau cov ncej thiab bearings raug rau cov khoom thauj radial thiab axial ntxiv, ua kom nrawm dua ntawm cov khoom dov ntawm cov bearing, cov sib tw sab hauv thiab sab nraud, thiab cov ntawv xov xwm, txo cov kev pabcuam lub neej ntawm cov bearing thiab txawm tias ua rau cov ncej khoov.

(V) Txo Kev Ua Haujlwm ntawm Kev Sib Kis

Qhov kev cuam tshuam, kev co, thiab kev poob ntxiv los ntawm cov nyhuv polygon txo qhov kev ua haujlwm ntawm kev sib kis ntawm cov saw hlau. Ntawm ib sab tes, qhov kev hloov pauv ceev tuaj yeem ua rau kev ua haujlwm tsis ruaj khov ntawm lub tshuab ua haujlwm, xav tau ntau lub zog los kov yeej cov khoom thauj ntxiv los ntawm qhov kev hloov pauv. Ntawm qhov tod tes, kev hnav ntau ntxiv ua rau kev sib txhuam ntawm cov khoom sib xyaw ua rau muaj kev poob zog ntxiv. Dhau sijhawm ua haujlwm ntev, qhov kev ua haujlwm txo qis no tuaj yeem ua rau cov khoom siv siv zog ntau ntxiv thiab nce cov nqi tsim khoom.

Plaub, Cov Lus Teb Txog Kev Tshawb Fawb: Cov Tswv Yim Zoo Los Txo Qhov Cuam Tshuam Polygon

Txawm hais tias qhov cuam tshuam ntawm polygon yog ib qho yam ntxwv ntawm cov saw hlau kis tau tus mob thiab tsis tuaj yeem tshem tawm tag nrho, nws tuaj yeem txo tau zoo los ntawm kev tsim qauv, kev xaiv, thiab kev ntsuas txij nkawm, yog li txhim kho qhov du, raug, thiab lub neej ua haujlwm ntawm lub kaw lus kis tau tus mob. Cov tswv yim tshwj xeeb yog raws li nram no:

(I) Kev Txhim Kho Kev Tsim thiab Kev Xaiv Sprocket

Nce Tus Naj Npawb ntawm Cov Hniav Sprocket: Thaum ua tau raws li qhov sib piv ntawm kev sib kis thiab qhov chaw teeb tsa, kev nce tus naj npawb ntawm cov hniav sprocket kom raug tuaj yeem txo qhov sib piv ntawm tus naj npawb ntawm sab rau qhov ntev ntawm "polygon," txo qhov kev hloov pauv ntawm lub vojvoog tig tam sim ntawd thiab yog li txo qhov loj ntawm kev hloov pauv ceev. Feem ntau hais lus, tus naj npawb ntawm cov hniav ntawm lub sprocket tsav tsheb yuav tsum tsis txhob me dhau (feem ntau, tsis pub tsawg dua 17 cov hniav yog qhov pom zoo). Rau kev sib kis ceev ceev lossis daim ntawv thov uas xav tau kev du siab, tus naj npawb ntau dua ntawm cov hniav sprocket (piv txwv li, 25 lossis ntau dua) yuav tsum tau xaiv. Txo qhov yuam kev ntawm lub suab sprocket: Txhim kho qhov tseeb ntawm kev ua haujlwm sprocket thiab txo qhov yuam kev tsim khoom thiab qhov yuam kev khiav tawm hauv lub suab sprocket ua kom muaj kev hloov pauv du hauv lub vojvoog tig tam sim ntawd ntawm qhov chaw sib dhos thaum lub sijhawm tig sprocket, txo qhov poob siab thiab kev co.

Siv cov sprockets nrog cov hniav tshwj xeeb: Rau cov ntawv thov uas xav tau kev sib kis du heev, cov sprockets nrog cov hniav tshwj xeeb (xws li cov sprockets zoo li arc). Cov hniav zoo li arc ua rau cov txheej txheem meshing ntawm cov saw thiab sprocket du dua, txo qhov kev poob siab meshing thiab yog li txo qhov cuam tshuam ntawm cov nyhuv polygon.

(II) Xaiv Cov Txheej Txheem Saw Kom Zoo

Txo qhov siab ntawm cov saw hlau: Qhov siab ntawm cov saw hlau yog ib qho ntawm cov yam tseem ceeb uas cuam tshuam rau qhov cuam tshuam ntawm cov duab polygon. Qhov me dua qhov siab, qhov ntev ntawm sab ntawm "polygon" me dua thiab qhov hloov pauv me dua ntawm qhov ceev ntawm cov saw hlau tam sim ntawd. Yog li ntawd, thaum ua tau raws li qhov yuav tsum tau muaj peev xwm thauj khoom, cov saw hlau nrog cov suab me dua yuav tsum tau xaiv. Rau kev siv ceev ceev, kev xa xov raug, cov saw hlau nrog cov suab me me (xws li ISO cov qauv 06B thiab 08A) raug pom zoo. Kev xaiv cov saw hlau siab: Kev txhim kho qhov tseeb ntawm kev tsim cov saw hlau, xws li txo qhov sib txawv ntawm cov saw hlau, kev khiav tawm ntawm cov menyuam, thiab qhov sib txawv ntawm bushing-pin, ua kom cov saw hlau txav tau zoo dua thaum lub sijhawm ua haujlwm thiab txo qhov cuam tshuam ntawm cov duab polygon uas ua rau muaj qhov tsis raug ntawm cov saw hlau.

Siv cov khoom siv tensioning: Kev teeb tsa cov khoom siv tensioning saw hlau kom raug (xws li lub caij nplooj ntoos hlav tensioners thiab lub zog tensioners) ua kom ntseeg tau tias cov saw hlau tswj tau qhov nruj kom raug, txo cov saw hlau slack thiab kev co thaum lub sijhawm ua haujlwm, yog li txo qhov cuam tshuam thiab kev hloov pauv ceev los ntawm cov nyhuv polygon.

(III) Tswj cov kev ua haujlwm ntawm lub kaw lus kis tau tus mob
Txwv qhov ceev ntawm kev sib kis: Qhov ceev ntawm lub sprocket siab dua, qhov ceev hloov pauv, kev cuam tshuam, thiab kev co ntau dua los ntawm cov nyhuv polygon. Yog li ntawd, thaum tsim lub kaw lus sib kis, qhov ceev ntawm kev sib kis yuav tsum raug txwv kom haum raws li cov lus qhia ntawm cov saw thiab sprocket. Rau cov saw hlau txheem, qhov ceev tshaj plaws uas tso cai feem ntau tau hais meej meej hauv phau ntawv qhia khoom thiab yuav tsum tau ua raws li nruj me ntsis.

Kev txhim kho qhov piv ntawm kev sib kis: Kev xaiv qhov piv ntawm kev sib kis tsim nyog thiab zam qhov piv loj dhau (tshwj xeeb tshaj yog hauv kev txo qhov ceev ntawm kev sib kis) tuaj yeem txo qhov kev hloov pauv ntawm lub kaum sab xis ntawm lub sprocket uas tau tsav. Hauv lub kaw lus sib kis ntau theem, qhov piv ntawm kev sib kis siab tshaj plaws yuav tsum tau muab rau theem qis dua kom txo qhov cuam tshuam ntawm cov nyhuv polygon rau theem siab dua.

(IV) Txhim Kho Kev Txhim Kho thiab Kev Txij Nkawm Khoom Siv

Xyuas kom meej qhov tseeb ntawm kev teeb tsa: Thaum teeb tsa lub kaw lus kis tau tus mob ntawm cov saw hlau, xyuas kom meej tias qhov yuam kev sib luag ntawm cov axes tsav thiab tsav sprocket, qhov yuam kev nruab nrab ntawm ob lub sprocket, thiab qhov yuam kev khiav tawm ntawm qhov kawg ntawm sprocket yog nyob rau hauv qhov ntau uas tso cai. Qhov tseeb ntawm kev teeb tsa tsis txaus tuaj yeem ua rau muaj kev tsis sib npaug ntawm qhov thauj khoom thiab kev sib txuas tsis zoo ntawm cov saw hlau thiab sprocket, ua rau muaj qhov cuam tshuam ntawm polygon ntxiv.

Kev Siv Lubrication thiab Kev Txij Nkawm Tsis Tu Ncua: Kev siv lubrication rau cov saw hlau thiab sprockets tsis tu ncua tuaj yeem txo qhov kev sib txhuam ntawm cov khoom, qeeb hnav, ntev lub neej kev pabcuam ntawm cov saw hlau thiab sprockets, thiab tseem txo qhov kev poob siab thiab kev co mus rau qee qhov. Xaiv cov roj nplua nyeem tsim nyog (xws li roj lossis roj) raws li qhov chaw ua haujlwm thiab cov xwm txheej ntawm cov khoom siv, thiab roj thiab tshuaj xyuas cov khoom siv ntawm lub sijhawm teem tseg. Hloov cov khoom siv hnav sai sai: Thaum cov saw hlau qhia txog qhov ntev ntawm qhov sib txawv (feem ntau tshaj 3% ntawm qhov sib txawv thawj), kev hnav ntawm cov menyuam hnyav heev, lossis cov hniav sprocket hnav ntau dua qhov txwv tsis pub dhau, cov saw hlau lossis sprocket yuav tsum tau hloov sai sai kom tiv thaiv kev hnav ntawm cov khoom siv ntau dhau los ntawm kev ua rau cov nyhuv polygon hnyav dua thiab ua rau cov khoom siv tsis ua haujlwm.

Tsib, Kev Txheeb Xyuas
Qhov cuam tshuam ntawm cov saw hlau yog ib qho yam ntxwv ntawm lawv cov qauv kis. Nws cuam tshuam rau kev ua haujlwm thiab lub neej ua haujlwm ntawm lub cev kis los ntawm kev cuam tshuam rau kev ruaj khov ntawm qhov ceev kis, tsim kev co thiab suab nrov, thiab ua kom cov khoom hnav sai dua. Txawm li cas los xij, los ntawm kev nkag siab zoo txog cov ntsiab cai thiab cov kev qhia tshwj xeeb ntawm cov nyhuv polygon thiab siv cov tswv yim kev txo qis thiab tsim nyog (xws li kev ua kom zoo dua sprocket thiab saw xaiv, tswj cov kev ua haujlwm, thiab txhawb kev teeb tsa thiab kev saib xyuas), peb tuaj yeem txo qhov cuam tshuam tsis zoo ntawm cov nyhuv polygon thiab siv tag nrho cov txiaj ntsig ntawm kev kis cov saw hlau.