1) Txoj kev tig yog qhov tsim nyog rau kev siv ntau yam sab hauv thiab sab nraud tig. Lub machining precision ntau ntawm tig yog zhi13 ～ IT6, thiab lub saum npoo roughness Ra tus nqi yog 12.5 ～ 1.6.
(2) Tus qauv ntawm cov cuab yeej tig yog yooj yim thiab yooj yim rau kev tsim khoom, uas yooj yim rau cov kev xaiv tsim nyog ntawm cov khoom siv ntsuas thiab ntsuas lub kaum sab xis raws li kev ua tiav. Xa cov cuab tam ntse thiab rhuav tshem kuj yooj yim dua.
(3) Kev tig tau muaj qhov muaj peev xwm hloov tau rau tus qauv, khoom siv thiab ntim ntau lawm ntawm qhov haujlwm tawm, thiab tau siv dav. Ntxiv nrog rau tig txhua yam ntawm cov hlau, cam khwb cia hlau thiab hlau tsis zoo, nws kuj tuaj yeem tig tsis yog hlau xws li iav steel, daim ntaub bakelite thiab nylon. Rau qee cov hlau tsis zoo uas tsis haum rau kev sib tsoo, pob zeb diamond tig cuab yeej siv tau rau qhov zoo tig, uas tuaj yeem muab cov tshuab siab siab thiab qhov me me ntawm qhov saum npoo tsis muaj nuj nqis.
(4) Ntxiv nrog rau qhov tsis ncaj saum npoo pub nyiaj ntawm qhov seem, feem ntau ntawm tig yog tas mus txuas nrog kev txiav vaj huam sib luag. Yog li no, lub zog txiav hloov me me, cov txheej txheem txiav yog qhov ruaj khov, uas ua tau zoo rau kev kub ceev thiab muaj zog txiav, thiab kev ua haujlwm siab ntau lawm.