Hauv daim teb ntawm CNC machining, nto roughness yog ib qho "tsis pom kev ntawm cov khoom siv kho mob, micron qib kev sib txawv feem ntau txiav txim siab ua tiav lossis tsis ua tiav ntawm cov khoom lag luam. Nrog kev txhim kho kev tsim kho ntawm precision kev tsim tawm, yuav ua li cas sib npaug machining kev ntsuas nrog qhov tseem ceeb-rau-Valley qhov siab) tau dhau los ua qhov kev sib tw tseem ceeb rau cov engineers kom kov yeej. Niaj hnub nawj cnc technology tau ntse tswj lub npoo ua tiav hauv qab {4 4}}}}. Kab lus no yuav tshawb xyuas qhov cuam tshuam ntawm kev ntxhib rau cov kev ntsuas ntawm qhov kev pom ntawm cov kev siv ntawm cov kev siv.
Nws txhais li cas hauv kev xyaum yog tias kev ntxhib yog qhov loj dua lossis me dua? Hauv lwm lo lus, muaj kev cuam tshuam ntawm lub cev li cas? Piv txwv li, rau cov kabmob mating nto, dab tsi xaiv ra3.2 lossis ra1.6 cuam tshuam? Yog tias koj tau siv los xaiv cov nqi roughness raws li kev pom zoo los yog kev paub, thiab tsis tau xav txog cov lus nug no. Tom qab ntawd kuv vam tias tsab xov xwm no tuaj yeem qhib koj lub siab.
Peb yuav tsis xaiv li cas. Kev xaiv ntawm ib qho kev ntxhib yuav tsum yog kom tau raws li qee yam haujlwm thiab txhim kho qee yam kev ua tau zoo.
Rau ib feem, ntxiv rau cuam tshuam cov tsos thiab kov ntawm ib feem, qhov loj me ntawm cov roughness feem ntau txhais tau tias qhov loj ntawm kev ntxhov siab. Los ntawm lub tswv yim ntawm me me (raws li qhia hauv daim duab yav dhau los), qhov loj dua qhov roughness, qhov qhov kev txawv ntawm qhov txawv ntawm lub pits thiab ntau gullies. Nyob rau hauv thaj chaw raug rau high tensile muaj kev ntxhov siab, muaj kev ntxhov siab concentration ntawm gullies, uas yog cov keeb kwm ntawm cov kab nrib pleb. Yog li yog tias koj xav txhim kho kev qaug zog nkees, koj yuav tsum xaiv ib qho me me.
Ntau zaus, roughness yog siv rau txuam ntawm ob ntu. Ntawm no, roughness tuaj yeem cuam tshuam ntau ntau yam, xws li sib txhuam coefficient, deformation, cua sov, xau, tshiaj, thiab lwm yam.
Qhov me me ntawm roughness, me dua kev sib txhuam coefficient thiab kev sib txhuam tsis kam. Yuav tsum muaj me me-roughness ntawm cov khoom nrawm, xws li nruab nrab ntawm cov khoom siv yob thiab remame ntawm bearings.
Nrog me ntsis roughness, microscopic "me me peaks" yuav tsis muaj siab heev lossis ntau. Thaum muaj kev co lossis kev kub siab ntawm ob ntu, yuav tsis muaj kev hloov pauv ntawm qhov ntev thiab kev hloov pauv ntawm qhov tshwm sim, uas tseem yuav txo qhov tshwm sim ntawm micro-suab coj hnav.(Bishen yog ib qho CNC Precision Xeem Kev Muab Kev Pab Cuam, tsom rau kev muab cov neeg siv khoom nrog cov kev daws teeb meem rau kev npau suav saum npoo.)
Qhov me me ntawm roughness, qhov zoo dua qhov sib xws ntawm ob ntu, zoo dua cov kev xav tau cua sov, thiab ntau dua qhov chaw sov uas yuav tsum tau txhim kho. Tsis tas li ntawd, kev ntxhib me me yuav txo tau qhov ua tau ntawm cov roj xau.
Rau adhesion, ntxhib sab chaw tuaj yeem muab ntau thaj chaw thaj tsam rau cov nplaum, tab sis yog tias qhov chaw sib ze heev yuav raug txo qis, thiab huab cua ua rau muaj zog ua kom muaj zog. Yog li xaiv polerate.
Hauv cov ntsiab lus, qhov kev xaiv ntawm roughness txawv ntawm daim ntawv thov los thov. Nws kuj yuav tsis muaj teeb meem hauv qee cov ntawv thov thiab thaj chaw, tab sis nws yog qhov tseem ceeb hauv qee lub sijhawm thiab cov ntawv thov tau hais los saum toj no. Ua ntej xaiv qhov roughness, nws tsim nyog xav txog yam kuv lub hom phiaj yog.(来源: Imchanics 机械)
