Qhov zoo ntawm precision qhov chaw ua yog qhia los ntawm qhov tseeb ntawm kev ua
Ua ntej, qhov sib hloov ntawm qhov chaw
Precision qhov chaw ua Hoobkas, lub tshuab los ntawm kev ua haujlwm ntev ntev, qee qhov chaw yuav inevitably hnav, deformation thiab seem, hloov nrog cov khoom tshiab. Cov khoom no yog hu ua accessories lossis cov khoom seem. Cov khoom siv lossis cov khoom seem yam tsis tau kho lossis xaiv, ntsia hauv lub tshuab tuaj yeem khiav tau, hu ua interchangeability.
Txhawm rau ua tiav kev sib hloov, thaum tsim khoom, qhov loj thiab geometry ntawm cov khoom yuav tsum ua kom zoo ib yam. Lub thiaj li hu ua zoo ib yam, tsis tas yuav tsum tau ua raws nraim tib yam (qhov no tsis yog nyiaj txiag los yog ua tau), ntev li ntev raws li qhov loj ntawm cov khoom, geometry, thiab lwm yam. tswj nyob rau hauv ib tug permissible ntau yam, thiaj li hais tias cov seem thiab lwm yam ua ke nrog. tib qhov sib xyaw ua ke ntawm kev ua haujlwm ntawm kab. Qhov no tau tso cai ntau qhov kev ua yuam kev, uas yog, qhov zoo ntawm qhov siab.
Thib ob, qhov zoo ntawm precision qhov chaw ua nrog kev ua kom raug rau kev nthuav qhia.
1. Geometric duab raug
Geometric duab raug yog hais txog qhov muaj pes tsawg leeg ntawm qhov chaw ntawm qhov chaw los yog axis thiab lwm cov duab geometric ntawm cov degree ntawm qhov tseeb, xws li seb txoj kab ncaj nraim, seb qhov chaw tiaj tus, cylindrical cross-section yog puag ncig, thiab lwm yam. tso cai ntau yam ntawm kev hloov mus rau "tolerance" los nthuav qhia, qhov me me ntawm cov duab kam rau ua tus lej, qhov siab dua qhov tseeb.
2. Dimensional raug
Precision qhov chaw ua lag luam tsom xam, qhov tseeb qhov tseeb hais txog qhov tseeb ntawm qhov loj ntawm cov khoom tom qab ua tiav, mus rau "qhov ntev ntev" los qhia. Thaum qhov luaj li cas ntawm qhov zoo ib yam, qhov siab dua qhov precision, qhov me me ntawm qhov kam rau ua daim duab.
3. Qhov tseeb ntawm qhov chaw
Precision qhov chaw ua lub Hoobkas, qhov tseeb qhov chaw yog hais txog qhov tseeb ntawm qhov kev sib nrig sib ntawm qhov chaw ntawm cov khoom, xws li seb ob lub dav hlau nyob rau hauv parallel, perpendicular, ob axes yog coaxial, thiab lwm yam, rau "qhov chaw kam rau ua" qhia.
Cov duab saum toj no thiab txoj hauj lwm ntawm kev kam rau siab, hu ua "form and position tolerance".