I. Cov ntsiab lus ntawm tus kheej-tapping taub hau screws thiab tus kheej-tapping hau countersunk screws
Tus kheej-npuaj screws thiab countersunk tus tapping screws yog ob hom tus kheej-tapping fasteners. Tus kheej-tapping fasteners yog fasteners nrog shank uas tuaj yeem nkag mus rau sab hauv ntawm lwm qhov. Lawv tsim cov phab ntsa nruj heev nrog cov ntoo los ntawm nyem cov ntoo ntoo thaum lub screwing txheej txheem los ntawm lawv tus kheej xov qauv. Lub ntsiab sib txawv ntawm tus kheej-npuaj screws nrog round hau thiab cov uas muaj conterersunk taub hau nyob rau hauv cov duab ntawm lub taub hau thiab lawv siv.
Ii. Qhov sib txawv ntawm tus kheej-tapping taub hau screws thiab counterbore tus kheej-tapping taub hau screws
1.Dov ib lub taub hau duab
Lub taub hau ntawm tus neeg countersunk tus kheej tapping ntsia hlau yog tsa thiab zoo li tus zoo li ib phaj, qee zaum hu ua horseshoe-puab lub taub hau. Lub taub hau ntawm qhov muag tsis pom kev tus kheej yog emappedded rau saum npoo ntawm ntoo, thiab nws cov duab yog kwv yees li ncig.
2. Txawv lub hom phiaj
Kev siv tus kheej drilling lub taub hau hluav taws xob feem ntau yog siv rau kev kho cov ntaub nyias nyias. Vim tias lawv cov taub hau sawv, lawv tuaj yeem tiv thaiv daim ntawv nyias nyias los ntawm kev tsiv, thiab lub taub hau tuaj yeem hla daim ntawv kom meej. Nyob rau tib lub sijhawm, nws yog yooj yim los tsim cov nyhuv zoo txhawb nqa ntawm ib sab ntawm cov ntoo thaum tua cov ntsia hlau nrog lub taub hau kev tswj hwm. Tus kheej drilling countersunk screws yog qhov tsim nyog rau kho cov ntoo nrog cov chaw tiaj thiab nruj yuav tsum tau ua kom loog. Vim tias thaum tua cov ntsia hlau mus rau hauv cov ntoo, siv qhov nthuav tawm ntawm tus kheej drilling countersunk screats tuaj yeem ua kom lub tiaj tiaj ntawm ntoo.
