Kev txhim kho qhov tseeb yog qhov yuam kev loj me thiab kev ua yuam kev geometric ntawm cov khoom ua los ntawm kev tuag. Kev ua ncaj ncees yog tuav tag nrho lub neej ntawm kev tuag. Qhov tseeb tsis yog qhia txog kev raug tsim thiab kev sibtham ntawm cov tuag xwb, tabsis tseem hais txog kev siv cov tuag, cov khoom ntawm cov ntaub ntawv, cov txheej txheem tsim thiab lwm yam. Precision yog lub tswvyim uas yuav tsum tau tsim los ntawm cov neeg ua tuag thiab cov neeg siv, raws li hauv qab no.
Qhov tseeb ntawm qhov chaw yog qhov ncaj qha los ntawm kev tsim cov khoom ntawm lub pwm nws tus kheej. Cov pwm yuav tsum tau lees paub tias peb yuav tsum tau ua li cas ntawm peb qhov yuav tsum ua, qhov zoo, qhov loj thiab qhov chaw ntawm cov khoom yuav tsum muaj raws li qhov kev xav tau ntawm daim duab, kev sib hloov ntawm cov khoom ua hauv pawg los yog hauv pawg, thiab qhov tseeb thiab kev ntseeg ntawm pwm nyob rau hauv kev siv mus sij hawm ntev. Qhov no yuav tsum tau hais tias qhov kev txiav txim siab tuag tsim thiab kev tsim tawm yuav tsum yog siab tshaj qhov ntawm qhov chaw, feem ntau siab tshaj qhov ntawm 2 lossis ntau dua.
2. Tuag tshem tawm yog qhov tseem ceeb ntawm kev tsim kev tuag thiab kev tsim khoom. Yuav kom paub tseeb tias qhov chaw dim thiab cov duab geometric zoo li cov khoom seem, cov khoom yas thiab kev tuag, thiab qhov zoo ntawm cov khoom (xws li qhov sib tshooj ntawm qhov chaw seem ntawm qhov chaw thiab lub qhov yas ntawm qhov chaw yas thiab cov thickness castings tuag, thiab lwm yam .), qhov sib txawv nruab nrab ntawm cov rooj sib cav thiab cov khoom siv hauv tsev concave (los yog cov tub ntxhais thiab qhov kab noj) yuav tsum muaj kev ruaj ntseg. Yog hais tias qhov sib txawv nruab nrab ntawm convex thiab concave xyuas qhov kev poob haujlwm yog kev kaw ntiv nplhaib ntawm lub rooj sib txig dim dim, kom tau raws li qhov yuav tsum tau ua kom raug kaw lub nplhaib, nws yuav tsum tau kho thiab dhos raws li lub nplhaib them nyiaj ntawm lub sam thiaj. Rau qee qhov kev txiav nyiaj tsis ncaj ncees, xws li hammering, ntsaws, thiab lwm yam., Nws tsis haum rau cov neeg tuag nrog kev cai tshaj. Yog li, kev txhim kho cov kev ua tiav ntawm kev tuag thiab qhov chaw thiab txhim kho cov kev txhim kho qis thiab sab qis tuag (los yog movable thiab taag xyuas) yog tib txoj kev los ua kom tiav qhov kev nplhaib ntawm lub rooj sib koom kaw dim, uas yog ib qho tseem rau qhov siab yuav tsum tsim kev tuag thiab tsim kev lag luam.
3. Kev tsim thiab kev txhim kho ntawm tus tuag nws tus kheej yog ib qho tseem ceeb ntawm kev ntsuam xyuas qhov kev tuag ntawm kev tuag. Nws yog cov txheej txheem ntawm kev tuag, kev siv (nrog rau cov khoom thiab tus qauv) thiab lub rooj sib txoos, kev sim, kev txais, ntim thiab kev thauj tus tuag.
