Cov iav tuaj yeem raug cais los ntawm cov hniav zoo nkauj, iav duab, cov hniav kab zoo, qhov chaw ntawm cov hniav iav, thiab kev tsim khoom.
Cov hniav profile ntawm lub iav muaj xws li cov hniav profile nkhaus, lub kaum sab xis siab, cov hniav qhov siab thiab kev hloov pauv. Involute gears yog qhov yooj yim rau kev tsim khoom, yog li ntawm cov iav siv nyob rau niaj hnub no, cov iav suav nrog rau feem ntau, thaum lub zog cycloidal thiab arc iav siv tsawg dua.
Nyob rau hauv cov nqe lus ntawm lub kaum sab xis siab, lub peev xwm ntawm lub siab lub kaum sab xis me me yog me me; thaum lub peev xwm ntawm lub kaum sab xis loj ntawm lub iav yog siab dua, tab sis kev thauj khoom ntawm cov kabmob nce nyob rau hauv cov xwm txheej ntawm tib lub zog sib kis, yog li nws tsuas yog siv tshwj xeeb. Cov hniav qhov siab ntawm lub iav tau raug standardized, thiab tus qauv hniav qhov siab feem ntau yog siv. Cov iav tawg muaj ntau qhov zoo thiab tau siv rau txhua yam khoom siv tshuab.
Tsis tas li ntawd, cov iav kuj tseem tuaj yeem muab faib ua cylindrical gears, bevel gears, non-circular gears, racks, thiab worm gears raws li lawv cov duab; spur iav, helical iav, herringbone gears, thiab nkhaus iav raws li cov duab ntawm cov kab hniav; Qhov saum npoo tau muab faib ua cov iav sab nraud thiab cov iav sab hauv; Raws li txoj kev tsim khoom, nws tuaj yeem muab faib ua lub zog casting, txiav lub zog, dov zog, sintering zog, thiab lwm yam.
Cov iav tsim cov khoom siv thiab cov txheej txheem kho cua sov muaj kev cuam tshuam zoo rau lub iav lub peev xwm thauj khoom thiab qhov hnyav. Ua ntej xyoo 1950, carbon steel tau siv rau lub zog, alloy steel tau siv nyob rau xyoo 1960, thiab cov ntaub ntawv tawv tawv tau siv rau xyoo 1970. Raws li hardness, tus hniav nto tuaj yeem muab faib ua ob hom: cov hniav mos thiab cov hniav tawv.
Gears nrog cov hniav mos mos muaj peev xwm qis dua, tab sis yooj yim rau kev tsim khoom thiab muaj cov khoom zoo khiav. Lawv feem ntau yog siv rau hauv cov tshuab dav dav uas tsis muaj kev txwv nruj ntawm kev sib kis loj thiab qhov hnyav, nrog rau cov khoom me me. Hauv kev sib koom ua ke, lub log me me muaj lub nra hnyav, yog li txhawm rau ua kom lub neej ua haujlwm ntawm lub zog loj thiab me me sib npaug sib npaug, qhov nyuaj ntawm cov hniav ntawm cov iav me me feem ntau siab dua li ntawm cov iav loj.
Cov iav hardened muaj qhov muaj peev xwm loj. Nws yog quenched, nto quenched los yog carburized thiab quenched tom qab lub iav yog finely txiav kom lub hardness. Txawm li cas los xij, thaum kev kho cua sov, cov iav yuav inevitably deform, yog li kev sib tsoo, kev sib tsoo lossis kev txiav zoo yuav tsum tau ua tom qab kev kho cua sov kom tshem tawm cov teeb meem tshwm sim los ntawm deformation thiab txhim kho qhov tseeb ntawm cov iav.
