Helical vs Ncaj Iav Racks: Lub Axial Force Tsis muaj leej twg them nyiaj rau

Helical iav khib, 19deg31'42 "helix lub kaum sab xis

Lub hom phiaj lo lus tseem ceeb:helical khib vs ncaj khib

Secondary:helical iav khib axial thrust, khib thiab pinion suab nrov, 19℃31'42 "helix lub kaum sab xis

Meta piav qhia:Thaum helical racks tuav ncaj racks, qhov ceev qhov pib uas ua kom pom tseeb rau lawv, thiab cov axial thrust quab yuam lawv tsim - roughly 0.355 × tangential quab yuam ntawm tus qauv helix lub kaum sab xis.

Ib tus neeg siv khoom ib zaug hu txog lub khib thiab pinion gantry uas ua kom puas pinion ncej bearings. Plaub lub hlis, peb cov kabmob. Lub khib tau zoo. Tus pinion tau zoo. Lub gearbox yog ib qho zoo.

Lawv tau teev helical gearing rau lub suab nrov thiab qhov loj ntawm cov bearings rau radial load nkaus xwb.

Ntawm tus qauv helix lub kaum sab xis, lub helical khib thawb rau sab ntawm lub pinion ncej nrog txog 35% ntawm lub zog tsav. Ntawm 10 kN tsav, uas yog 3.5 kN ntawm axial thrust cov bearings tsis tau ntsuas rau. Nws yog ib qho kev saib xyuas ntau tshaj plaws nrog helical racks, thiab nws yog qhov tseeb.

Ntawm no yog qhov sib piv tag nrho, suav nrog tus lej ntawd.

Lub kaum sab xis helix tsis yog arbitrary

Thoob plaws hauv kev lag luam, ib lub kaum sab xis helix dominates khib ntau lawm:19℃31' 42 ".

Hloov pauv: 19 + 31/60 + 42/3600 =19.52833 degree. Cov phau ntawv kawm dav dav rau helical gearing yog 15℃mus rau 25 degree, tab sis cov khoom khib nyiab tau sib sau ua ke ntawm tus nqi no, uas yog vim li cas racks thiab pinions los ntawm ntau qhov chaw yuav feem ntau mesh. Muaj ib qho laj thawj rau qhov txawv txawv ntawm daim duab: ntawm lub kaum sab xis helix lub module hloov mus rau tag nrho - tus lej ncig lub suab, yog li khib qhov ntev tuaj tawm hauv cov lej puag ncig.

Feem ntau - tsis tas li. Ntxiv rau qhov hauv qab no.

Dab tsi helical tiag tiag yuav koj

Plaub qhov txiaj ntsig ntawm cov racks ncaj nraim yog raug suav hais tias yog:

Daim duab 1. Axial thrust tsim los ntawm helical khib ntawm tus qauv 19deg31'42 "helix lub kaum sab xis.

Quieter khiav, tshwj xeeb tshaj yog nyob rau hauv high speeds

Kev sib cuag siab dua - cov hniav ntau dua tau koom nrog - uas ua rau kom muaj peev xwm nqa tau

Lengths nyob rau hauv round tooj: 500.0 mm thiab 1,000.0 mm, piv rau ncaj rack lengths uas ib txwm multis ntawm π, xws li . 502.65 mm thiab 1005.31 mm

"Feem ntau, lawv raug nqi ib yam li cov racks ncaj!"

Muab bluntly: helical racks muaj zog thiab ntsiag to dua cov racks ncaj nraim ntawm tib qhov loj, tab sis lawv tsim muaj zog quab yuam, thiab ntsuas yuav tsum tau coj los tiv thaiv lawv.

Lub ntsiab lus thib peb zoo li tsis tseem ceeb thiab tsis yog. Ib tug ncaj racks nrog module 4 muaj ib tug hniav pitch ntawm π × 4=12.566 hli, yog li ib tug integer tooj ntawm cov hniav muab rau koj 502.65 hli los yog 1005.31 hli - yeej tsis ib puag ncig daim duab. Helical racks raug txiav kom ntev li ntawm 500 lossis 1000 hli. Thaum koj tab tom tso racks xaus mus rau qhov kawg ntawm lub tshuab txaj dimensioned nyob rau hauv cov lej puag ncig, qhov sib txawv no yuav txuag tau tus qauv tsim thiab sib dhos ua ke.

Vim li cas lub peev xwm thauj khoom siab dua los ntawm kev sib cuag mus li cas. Nyob rau hauv ib tug ncaj racks, txhua tus hniav koom nyob rau hauv tag nrho nws lub ntsej muag dav ib zaug, ces disengages. Kev thauj mus los yog sai. Nyob rau hauv ib lub helical khib cov kab sib txuas cheb diagonally hla lub flank, yog li kev koom tes yog maj mam thiab ntau tshaj ib tug hniav yog ib txwm nqa load. Ob lub suab nrov txo thiab lub peev xwm nce los ntawm tib lub geometry.

Kev ncaj ncees caveat: tsis muaj ib qho ntawm cov chaw tsim khoom lag luam uas peb tau tshawb xyuas luam tawm tus lej sib cuag tus lej, feem pua ​​​​ntawm cov peev txheej nce, lossis dB suab nrov txo rau helical piv rau cov racks ncaj. Cov txiaj ntsig tau lees paub tas li thiab lub cev zoo, tab sis cov lej tshwj xeeb tsis tau tshaj tawm, thiab peb yuav tsis tsim lawv.

Lub zog axial

Lub kaum sab xis thawb lub pinion rau sab. Tus qauv kev sib raug zoo:

Fa=Ft · tan

Qhov twg Fa yog axial thrust, Ft yog tangential tsav quab yuam, thiab yog lub kaum sab xis.

Ntawm=19.52833 degree, tan =0.35468.

Luas ≈ 0.355 × Ft.

Lub zog tsav 20 kN tsim tawm kwv yees li 7.1 kN ntawm axial thrust ntawm lub pinion ncej, tsis tu ncua, nyob rau hauv ib qho kev taw qhia uas thim rov qab thaum lub axis thim rov qab.

Qhov sib piv nrog kev sib tw ncaj nraim yog qhov tseeb: lub kaum sab xis loj dua ua rau lub zog loj dua, thaum nyob ntawm cov hniav spur tsis muaj axial quab yuam txhua.

Qhov no yog ib tug tiag tiag drawback ntawm helical gearing: lub helix lub kaum sab xis tsim ib sab quab yuam uas teev ncaj qha nrog lub tangential tsav quab yuam.

Qhov laj thawj yog qhov tsis tuaj yeem zam: lub pinion ncej bearings yuav tsum tau xaiv thiab ntsuas los daws qhov kev sib tw no, uas ntxiv cov nqi thiab qhov nyuaj rau qhov kawg tsav.

Peb qhov kev cuam tshuam:

Cov kabmob xaiv.Sib sib zog nqus groove pob bearings muaj peev xwm axial tsawg. Angular contact bearings los yog tapered roller khub tuav cov khoom ua ke kom zoo. Qhov no yog qhov uas tus neeg siv khoom gantry mus yuam kev.

Gearbox tso zis ntsuas.Planetary gearboxes rau khib thiab pinion drives luam tawm lub siab tshaj plaws tso cai axial quab yuam ntawm cov zis ncej. Kos nws tawm tsam 0.355 × koj tus qauv tsim. Tshaj nws ua rau lub gearbox tso zis bearing, tsis yog khib, thiab qhov tsis ua hauj lwm yog kim.

Mounting nruj.Lub thrust reverses kev taw qhia txhua lub sij hawm lub axis thim rov qab. Lub mounting uas flexes nyob rau hauv reversing axial load yuav tshwm sim raws li txoj hauj lwm yuam kev thiab nws thiaj li fretting ntawm lub interfaces.

Ceev qhov pib

Cov kev taw qhia luam tawm pawg hauv ib pawg nqaim.

Ncaj- cov hniav iav racks hauv kev tsim khoom

Nyeem thoob plaws: qis dua 1 m / s, ncaj racks yog qhov ua tau zoo. Nruab nrab ntawm 1 thiab 2 m / s yog kev txiav txim hu rau - suab nrov - rhiab ib puag ncig thawb mus rau helical. Tshaj 2 m / s, helical.

Suab nrov tsis yog qhov teeb meem nkaus xwb. Kev sib koom ua ke sai ntawm cov hniav ncaj qha ua rau muaj qhov hnyav hnyav txhua lub sijhawm cov hniav sib ntsib, thiab cov nplais pob tw nrog ceev. Suab nrov thiab ceev cov hniav hnav yog ob yam tsos mob ntawm tib qho laj thawj.

Txoj cai mating uas catches neeg tawm

helical racks thiab helical pinions yuav tsum sib phim. Thaum meshing lub helical khib nrog lub helical iav, lub helix lub kaum sab xis yuav tsum sib npaug ntawm tus nqi thiab rov qab rau hauv kev coj.

Rov qab tes. Txoj cai - tes khib yuav siv sij hawm sab laug - tes pinion.

Tshaj tawm mating charts for stock rack ranges show only particular hand combinations as allowable, with everything else excluded. Qhov sib piv yog kev qhia: nrog rau kev zam ntawm helical racks, Tshuag racks feem ntau yuav ua phooj ywg nrog ib qho spur iav ntawm tib lub module.

Qhov kev zam ntawd yog lub ntsiab lus. Ncaj racks zam txim rau - ib qho spur pinion ntawm txoj cai module yuav mesh. Helical racks xav tau lub kaum sab xis thiab sab nraud, thiab yog tias koj koom nrog cov ntu, "sib koom kev ntsuas racks rau helical racks yuav tsum muaj qhov sib txawv ntawm cov racks."

Cov tswv yim tswv yim ua raws li nram no:

Rau qhov ntsiag to, qis - rov qab tsav tsheb nrog lub neej ua haujlwm ntev, muab lub pinion thiab khib los ntawm ib tus neeg muag khoom. Tolerances tseem ceeb heev nrog cov hniav helical.

Nrog rau cov ntsiab lus tseem ceeb uas yuav tsum nco ntsoov: backlash yog tsim los ntawm kev sib cuam tshuam ntawm txhua yam hauv cov saw hlau. Tsis muaj kev nkag siab ua ke ib qho zoo heev - qis- backlash gearbox nrog ib tus pinion loj los yog qis qis.

Qhov tiag tiag helical khib zoo li cas

Ib tug raug ntau lawm ntau yam ua rau grading qhob - 1045 steel, helix lub kaum sab xis 19℃31'42", 1000 mm ntev:

Matched pinion nkag nrog lub khib kom tswj mesh kam rau ua

Tib cov khoom, tib lub hardness, tib lub kaum sab xis helix. Qhov txawv ntawm Q6 thiab Q10 yog tag nrho seb cov hniav puas yog av tom qab hardening.

Installation sau ntawv uas siv ob txoj kev

Standard installation kev taw qhia:

"Ib tug me me ntawm backlash yuav tsum ib txwm muaj nyob rau ntawm lub khib & pinion iav mesh. Lub backlash theem yuav tsum tau teem nyob rau hauv lub high point ntawm lub khib lub pitchline, uas yuav teem lub tsawg kawg nkaus backlash tus nqi thiab tiv thaiv ib qho kev khi nyob rau hauv tag nrho cov rack mus ntev."

Txheeb xyuas tus qauv kev sib cuag los ntawm bluing cov hniav pinion thiab khiav qeeb ob txoj hauv kev. "Tus qauv kev sib cuag zoo tshaj plaws yuav yog nyob rau hauv lub pitchline thiab txuas mus thoob lub ntsej muag dav."

Hauv qhov chaw qias neeg, mount "cov hniav tig mus, los yog tiv thaiv kom tsis txhob muaj kab mob."

Khiav qhuav yog ua tau tab sis "lub gearing yuav tsum loj dua los them rau qhov hnyav ntxiv thiab tsim kua muag tab sis lub neej ua haujlwm tsis tuaj yeem lav."

Nyob rau mounting thiab datum nto:

Racks ruaj ntseg nrog dowel pins; laum khib thiab puag ib txhij.

"Pitch kab ntawm racks yog tswj los ntawm kev siv lub hauv qab nto raws li cov ntaub ntawv siv. Yog tias koj tshuab hauv qab qhov chaw, qhov tseeb ntawm cov racks yuav raug cuam tshuam."

"Yuav kom tsis txhob muaj teeb meem ntawm iav precision, tsis txhob txo lub ntsej muag dav."

Qhov kawg no los txog thaum ib tus neeg xav tau kom haum lub khib rau hauv ib lub hnab nqaim me ntsis thiab txiav txim siab rau sab. Tsis txhob - lub ntsej muag dav yog lub peev xwm thauj khoom, thiab qhov chaw datum yog qhov raug ntsuas los ntawm.

Cov ntsiab lus txiav txim

Ncaj racks thaum:ceev hauv qab 1 m / s, suab nrov tsis yog ib qho kev txhawj xeeb, koj xav tau yooj yim bearing kev npaj uas tsis muaj axial load, los yog koj yuav tsum tau ua phooj ywg nrog spur pinions uas twb muaj lawm.

Helical khib thaum:ceev tshaj 2 m / s, suab nrov tseem ceeb, koj xav tau lub peev xwm siab tshaj plaws los ntawm qhov muab rack loj, lossis koj xav tau puag ncig - tus lej ntev rau kev sib koom ua ke hauv txaj -thiabkoj cov bearings thiab gearbox tuaj yeem nqa 0.355 × Ft ntawm thrust.

FAQ

Kuv lub helical khib yuav ntau npaum li cas?

Txog 0.355 × tangential quab yuam ntawm tus qauv 19℃31'42 "helix lub kaum sab xis, los ntawm Fa=Ft · tan . Xyuas nws tiv thaiv lub gearbox tso zis ncej axial ntsuam xyuas thiab lub pinion bearing muaj peev xwm.

Kuv puas tuaj yeem siv tus pinion ncaj rau ntawm lub helical khib?

Tsis yog. Helix cov ces kaum yuav tsum sib npaug ntawm tus nqi thiab ua qhov sib txawv ntawm tes. Ncaj nraim - ntawm -helical muab ntug kev sib cuag thiab tsis ua hauj lwm sai.

Puas yog helical racks kim dua?

Feem ntau cov khib nws tus kheej raug nqi tib yam. Cov nqi ntxiv yog nyob rau hauv cov bearings thiab gearbox uas yuav tsum tau nqus cov thrust.

Yog vim li cas helical khib lengths round tooj tab sis ncaj rack lengths tsis?

Ncaj rack ntev yog tus naj npawb ntawm cov hniav zaus π × module, yog li nws tsaws ntawm qhov tseem ceeb xws li 1005.31 hli. Helical racks yog tsim kom muaj qhov ntev 500 lossis 1000 mm.

Puas yog helical gearing txo qhov rov qab?

Tsis yog nyob rau hauv, tab sis zoo backlash nyob rau hauv load yuav qis dua vim hais tias ntau cov hniav sib cuag. Qhov tseeb backlash tseem nyob ntawm qhov chaw nrug thiab kev sib dhos mounting.

Tianjin OuNaiDa Transmissions Technology muab cov khoom ncaj thiab helical iav racks nrog pinions sib tw, txiav los yog hauv av tom qab hardening. Kev yuav khib thiab pinion los ntawm ib qhov chaw zam qhov kev kam rau ua pawg - nce uas ua rau feem ntau cov teeb meem helical mesh - xa peb koj qhov ceev, thauj khoom thiab kev taw qhia thiab peb yuav hais cov txheej txheem sib tw.