Hauv kev sib txuas lus kev sib txuas lus, ntau tus neeg tau siv los siv qhov "surface finish" qhia. Qhov tseeb, "surface finish" yog npaj siab raws li tib neeg kev pom kev pom, thaum "surface roughness" yog npaj raws li qhov tseeb microscopic geometry ntawm qhov chaw. Vim tias qhov yuav tsum tau ua raws li tus txheej txheem thoob ntiaj teb (ISO), cov lus qhia lub sij hawm "surface finish" tau ntev lawm tsis tau siv nyob rau hauv lub teb chaws tus qauv, thiab lub sij hawm "surface roughness" yuav tsum tau siv rau formal thiab nruj kab lus.
Deg roughness yog hais txog qhov tsis sib xws ntawm cov pitches me me thiab cov ncov me me thiab cov kwj deg uas lub tshuab ua haujlwm muaj. Qhov kev ncua deb (yoj nrug) nruab nrab ntawm ob lub ncov lossis ob lub troughs yog me me (hauv qab 1 hli), uas belongs rau lub microscopic geometric duab yuam kev.
Tshwj xeeb, nws hais txog qhov siab thiab qhov deb S ntawm lub ncov me me thiab hav. Feem ntau faib los ntawm S:
S<1mm is="" the="" surface="">
1 Less tshaj los yog sib npaug S Less tshaj los yog sib npaug rau 10mm yog waviness
S>10mm yog f
Nto Roughness Forming Factors
Surface roughness feem ntau yog tsim los ntawm cov txheej txheem siv thiab lwm yam, xws li kev sib txhuam ntawm cov cuab yeej thiab qhov chaw ntawm lub sijhawm ua haujlwm, cov yas deformation ntawm cov txheej txheej hlau thaum lub nti yog sib cais, thiab lub siab zaus vibration hauv. cov txheej txheem txheej txheem, hluav taws xob machining tso tawm pits, thiab lwm yam Vim yog cov txheej txheem ua haujlwm sib txawv thiab cov khoom siv ua haujlwm, qhov tob, qhov ntom ntom, cov duab thiab kev ntxhib los mos ntawm cov kab laug sab laug ntawm cov txheej txheem ua haujlwm txawv.
