Qhov sib txawv ntawm cov xov hlau ntxig (keyed thread inserts): Thaum cov ntawv hais txog "keyed thread inserts," lawv txoj hauv kev ua haujlwm yog raws li radial elastic deformation thiab cov ntaub ntawv nco txog ntawm tus ntoo khaub lig rhomboid -section helical caij nplooj ntoos hlav los tsim kev cuam tshuam haum. Qhov "tus yuam sij" tsis yog tus yuam sij rau kev ywj pheej, tab sis yog hais txog cov nyhuv fulcrum tsim los ntawm cov qauv helical nws tus kheej thaum lub sij hawm installation. Tus "key" nyob rau hauv tus yuam sij -lock threaded insert (saib cov ntaub ntawv) yog ib tug ywj siab, lub cev uas twb muaj lawm protruding qauv. Nws lub xauv mechanism yog kev sib koom ua ke, tsis yog elastic preload.
Qhov sib txawv ntawm nylon insert locking screws: Nylon insert locking screws (saib cov ntaub ntawv) siv cov elastic deformation ntawm cov ntaub ntawv nylon los tsim cov kev sib txhuam tseem ceeb ntawm cov xov, ib hom kev sib txhuam locking. Qhov tseem ceeb -lock inserts, ntawm qhov tod tes, ua tiav kev sib tsoo los ntawm kev sib koom ua ke, ua rau muaj kev txhim khu kev qha ntau dua los tiv thaiv-loosing kev ua tau zoo thiab tsis cuam tshuam los ntawm qhov kub thiab txias (nylon softens ntawm qhov kub thiab txias).
Hauv cov ntsiab lus, tus qauv tsim ntawm tus yuam sij -lock threaded inserts siv ib qho kev ywj pheej txhua yam yuam sij rau lub cev koom nrog ib qho zawj ntawm cov khoom siv hauv paus, ua tiav kev tiv thaiv tsis zoo - kev sib hloov ntawm lub cev ntxig, yog li muab kev ntseeg siab heev thiab kev co- tiv thaiv threaded kev daws teeb meem.
