Nto roughness yog ib qho tseem ceeb ntawm kev ntsuas qhov ntsuas uas qhia txog qhov tsis zoo ntawm lub microscopic geometric duab ntawm qhov chaw, thiab yog lub hauv paus tseem ceeb rau kev ntsuam xyuas qhov zoo ntawm qhov chaw; seb nws puas tsim nyog lossis tsis yog ncaj qha ntsig txog qhov zoo, kev pabcuam lub neej thiab cov nqi tsim khoom ntawm cov khoom.
Muaj peb txoj hauv kev los xaiv qhov roughness ntawm cov khoom siv tshuab, uas yog txoj kev suav, txoj kev sim thiab cov qauv piv txwv. Hauv kev tsim cov khoom siv tshuab, feem ntau siv txoj hauv kev yog txoj kev sib piv, uas yooj yim, ceev thiab zoo. Daim ntawv thov ntawm txoj kev sib piv yuav tsum muaj cov ntaub ntawv siv txaus, thiab ntau yam kev siv tshuab tsim cov ntawv qhia muaj ntau cov ntaub ntawv thiab cov ntaub ntawv. Qhov feem ntau siv yog qhov nto roughness tsim nyog rau chav kawm kam rau ua.
Feem ntau, qhov me me ntawm qhov yuav tsum tau ua kom ntev ntev ntawm cov khoom siv kho tshuab, qhov me me ntawm qhov roughness tus nqi ntawm cov khoom siv tshuab, tab sis tsis muaj kev sib raug zoo ntawm lawv. Piv txwv li, cov tes tuav, tes tuav ntawm qee lub tshuab, cov cuab yeej, cov cuab yeej huv huv, thiab qhov hloov kho ntawm qee qhov chaw ntawm cov khoom noj khoom haus, lawv qhov chaw yuav tsum tau ua kom zoo heev, uas yog, qhov kev xav tau ntawm qhov roughness yog siab, tab sis lawv qhov loj me. kam rau ua yuav tsum siab heev. Tsawg. Feem ntau, rau cov khoom uas muaj qhov yuav tsum tau ua kom ntev ntev, tseem muaj qee qhov kev sib txuas lus ntawm qib kam rau siab thiab tus nqi ntawm qhov roughness.
Hauv qee qhov chaw tsim khoom siv phau ntawv thiab cov khoom siv tshuab tsim khoom, muaj ntau cov lus qhia txog kev paub dhau los thiab kev suav cov qauv ntawm kev sib raug zoo ntawm qhov chaw roughness ntawm cov khoom siv tshuab thiab qhov ntev ntev ntawm cov khoom siv tshuab, thiab lawv tau teev rau cov nyeem xaiv, tab sis raws li ntev npaum li koj ua tib zoo nyeem, koj yuav pom tias txawm hais tias qhov tseeb tib yam empirical xam mis yog saws, cov txiaj ntsig hauv daim ntawv tsis zoo ib yam, thiab qee qhov ntawm lawv muaj qhov sib txawv loj. Qhov no ua rau muaj kev ntxhov siab rau cov neeg uas tsis paub txog qhov xwm txheej. Nws kuj ua rau lawv nyuaj rau xaiv qhov roughness rau cov khoom siv ua haujlwm.
Hauv kev ua haujlwm tiag tiag, rau ntau hom tshuab, lawv qhov chaw muaj qhov sib txawv ntawm qhov roughness nyob rau hauv tib qhov ntev ntev. Qhov no yog qhov teeb meem stability ntawm kev koom tes. Hauv kev tsim thiab tsim cov txheej txheem ntawm cov khoom siv tshuab, rau ntau hom tshuab, cov kev xav tau rau kev ruaj ntseg thiab kev sib hloov ntawm cov khoom sib txawv. Nyob rau hauv phau ntawv uas twb muaj lawm mechanical qhov chaw tsim, peb hom hauv qab no feem ntau xav txog:
Thawj qeb yog tsuas yog siv nyob rau hauv precision machinery, uas yuav tsum tau muaj kev ruaj ntseg ntawm kev koom tes. Nws yuav tsum tau hais tias qhov hnav txwv ntawm cov khoom yuav tsum tsis txhob ntau tshaj 10 feem pua ntawm qhov ntev ntawm qhov ntev ntawm cov khoom thaum siv los yog tom qab rov ua dua. Qhov no yog lub ntsiab daim ntawv thov Nyob rau saum npoo ntawm precision instruments, meters, precision ntsuas cov cuab yeej, thiab kev sib txhuam nto ntawm qhov tseem ceeb heev, xws li lub puab nto ntawm lub tog raj kheej, cov ntaub ntawv tseem ceeb ntawm precision tshuab cuab yeej, thiab lub ntsiab phau ntawv jig tho txawv. tshuab.
Cov qeb thib ob feem ntau yog siv rau cov tshuab precision zoo tib yam, uas yuav tsum muaj kev ruaj ntseg ntawm kev koom tes, yuav tsum muaj kev txwv tsis pub tshaj 25 feem pua ntawm cov nqi kam rau ntawm qhov chaw, thiab yuav tsum muaj kev sib cuag zoo heev. Nws yog tsuas yog siv nyob rau hauv xws li tshuab cuab yeej, cuab yeej, nto mated nrog dov bearings, taper pin qhov, thiab kev sib cuag nto nrog kuj high speeds xws li mating nto ntawm zawv zawg bearings, ua hauj lwm nto ntawm iav hniav, thiab lwm yam.
Cov qeb thib peb feem ntau yog siv rau kev siv tshuab dav dav, yuav tsum tau siv cov khoom txwv tsis pub tshaj 50 feem pua ntawm qhov ntsuas qhov ntev, thiab tsis muaj qhov sib chwv ntawm cov txheeb ze txav mus, xws li lub thawv npog, lub tes tsho, qhov chaw uas xav tau. kaw kev sib cuag, yuam sij thiab keyways Ua hauj lwm nto; kev sib cuag nto nrog qis tus txheeb ze zog ceev, xws li bracket qhov, bushing, ua hauj lwm nto nrog log ncej qhov, reducer, thiab lwm yam.
Ntawm no peb ua ib qho kev txheeb xyuas ntawm ntau lub rooj qhov tseem ceeb hauv phau ntawv tsim kho tshuab, thiab hloov cov txheej txheem qub hauv tebchaws rau qhov roughness (GB{{0}}) rau hauv lub tebchaws tshiab (GB1031-83) tshaj tawm los ntawm tus txheej txheem thoob ntiaj teb ISO nyob rau hauv 1983. ), siv qhov kev ntsuam xyuas uas nyiam, uas yog, contour arithmetic mean deviation value Ra=(1)/(l)∫l0|y|dx. Thiab siv thawj cov lej ntawm cov lej uas nyiam los ntawm Ra, kev sib raug zoo ntawm qhov roughness Ra thiab qhov ntev ntev IT raug txiav tawm raws li
Chav Kawm 1: Ra Ntau dua lossis sib npaug rau 1.6 Ra Tsawg dua lossis sib npaug rau 0.008 × IT
Ra Less tshaj lossis sib npaug rau {{0}}.8Ra Tsawg dua lossis sib npaug rau 0.010 × IT
Hom 2: Ra Ntau dua lossis sib npaug rau 1.6 Ra Tsawg dua lossis sib npaug rau 0.021 × IT
Ra Less tshaj lossis sib npaug rau {{0}}.8Ra Tsawg dua lossis sib npaug rau 0.018 × IT
Chav Kawm 3: Ra Tsawg dua lossis sib npaug rau 0.042 × IT
Sau peb qhov kev sib raug zoo saum toj no, raws li qhia hauv Table 1, Table 2, thiab Table 3.
Hauv kev tsim cov khoom siv kho tshuab, thaum xaiv qhov chaw roughness tus nqi raws li qhov ntev ntev, tus nqi sib xws yuav tsum raug xaiv raws li ntau hom tshuab.
Nws yuav tsum tau muab sau tseg tias Ra nyob rau hauv lub rooj txais tus nqi ntawm cov thawj series, thaum lub sij hawm txwv tus nqi ntawm lub qub teb chaws tus qauv Ra yog tus nqi ntawm lub thib ob series. Thaum hloov dua siab tshiab, yuav muaj teeb meem ntawm tus lej saum toj thiab qis dua. Nyob rau hauv lub rooj, peb siv cov qib siab rau qhov tseem ceeb ntawm lub rooj, vim tias nws muaj txiaj ntsig zoo los txhim kho cov khoom zoo, thiab qib qis rau tus nqi ntawm tus kheej. Cov ntsiab lus thiab daim ntawv ntawm lub rooj sib haum rau qib kam rau ua thiab nto roughness ntawm lub teb chaws tus qauv qub yog qhov nyuaj. Rau tib qib kam rau ua, tib qhov loj me, tib qhov loj me me, qhov roughness qhov tseem ceeb ntawm lub qhov thiab cov ncej sib txawv, thiab qhov tseem ceeb ntawm cov khoom haum sib txawv kuj txawv. , qhov no yog vim tus nqi kam rau ntawm qhov qub kam rau ua thiab haum tus qauv (GB159-59) muaj feem xyuam rau cov xwm txheej saum toj no. Tam sim no lub teb chaws tshiab tus qauv kam rau ua thiab haum (GB1800-79) muaj tib tus qauv kam rau ua tus nqi rau txhua qhov loj me nyob rau hauv tib chav kawm kam rau ua thiab tib qhov me me, uas yooj yim heev rau cov lus sib tham ntawm cov chav kawm kam rau ua thiab qhov roughness, thiab kuj Nws yog ntau scientific thiab tsim nyog.
Hauv kev tsim ua haujlwm, nyob rau hauv qhov kev ntsuam xyuas zaum kawg, kev xaiv ntawm qhov roughness ntawm qhov chaw yuav tsum tau ua los ntawm qhov tseeb thiab ntsuas tag nrho cov kev ua haujlwm saum npoo thiab cov txheej txheem kev lag luam ntawm ib feem txhawm rau xaiv qhov tsim nyog. Cov qib tolerance thiab qhov roughness qhov tseem ceeb hauv lub rooj tuaj yeem siv los ua ib qho kev siv rau kev tsim.
