Rau lub qhov muag uas tsis tau kawm, ib lub ntsis ntswj yuav zoo li lwm lub. Txawm li cas los xij, hauv qab lub voj voog uas paub zoo yog lub ntiaj teb ntawm kev ua hlau thiab kev tshawb fawb txog cov khoom siv uas ua rau muaj kev ua tau zoo, kev ruaj khov, thiab kev siv. Kev hloov pauv ntawmncaj shank twist laum ntsislos ntawm ib lub cuab yeej hlau yooj yim mus rau ib qho txuj ci tseem ceeb ntawm thev naus laus zis siab yog ib zaj dab neeg ntawm kev tsim kho tshiab uas tsav los ntawm qhov kev thov tsis tu ncua ntawm kev lag luam niaj hnub no.
Lub hauv paus ntawm lub ntiaj teb ntawm cov khoom siv laum yog High-Speed Steel (HSS). Qhov no tsis yog hlau ib txwm muaj; nws yog ib qho hlau sib xyaw ua ke uas feem ntau muaj tungsten, molybdenum, chromium, thiab vanadium. Cov khoom ntxiv no muab HSS nws tus yam ntxwv tseem ceeb: qhov tawv liab. Qhov no txhais tau tias cov khoom siv tuaj yeem tswj tau nws cov qauv thiab txiav ntug txawm tias nws ci liab kub los ntawm kev sib txhuam, uas yog ib qho tshwm sim ntau hauv kev laum ceev ceev. Hauv HSS, muaj cov qib ntxiv, xws li M2 thiab M35 (uas muaj cobalt), txhua qib muab kev txhim kho me ntsis hauv kev tiv taus cua sov, kev tawv, thiab cov yam ntxwv hnav.
Yog xav kom muaj kev ua tau zoo dua, kev lag luam tig mus rau carbide. Cov laum carbide khov kho lossis cov laum carbide-tipped yog cov khoom siv siab tshaj plaws. Tungsten carbide yog qhov nyuaj heev - yuav luag sib npaug li pob zeb diamond. Qhov no ua rau nws zoo tagnrho rau kev tho rau hauv cov khoom siv abrasive xws li fiberglass, carbon fiber, hlau cam khwb cia, thiab cov hlau tawv. Lub taub hau carbide brazed rau ntawm HSS shank muab kev sib yuav zoo meej ntawm cov hniav txiav uas tawv heev nrog lub cev ruaj khov, nqus tau kev co. Kev sib xyaw ua ke no muab lub neej siv ntev dua thiab cov nqi pub siab dua li HSS ib leeg, txawm hais tias nws muaj tus nqi siab dua thiab xav tau cov tshuab khov kho dua kom tiv thaiv kev tawg yooj yim.
Cov khoom siv tsuas yog ib feem ntawm qhov sib npaug xwb. Kev kho qhov chaw thiab cov txheej txheej yog cov riam phom zais cia uas ua rau lub pob zeb muaj peev xwm ntau dua. Cov txheej txheej feem ntau yog Titanium Nitride (TiN) xim kub. Cov txheej txheej ceramic no ua rau qhov chaw tawv dua thiab txo qhov sib txhuam, ua rau lub pob zeb khiav txias dua thiab kav ntev dua peb zaug dua li cov uas tsis tau txheej. Cov txheej txheej siab dua xws li Titanium Aluminium Nitride (TiAlN) thiab Aluminium Titanium Nitride (AlTiN) muab kev tiv thaiv cua sov ntau dua, ua rau lawv tsim nyog rau kev ua haujlwm qhuav, ceev ceev ntawm cov hlau tawv.
Qhov geometry ntawm qhov groove spiral nws tus kheej kuj raug rau kev ua kom zoo dua. Txawm hais tias tus qauv tsim 2-flute yog jack-of-all-trades, muaj ntau yam kev hloov pauv. Lub spiral qeeb dua (lub kaum sab xis qis dua) zoo dua rau kev tho cov hlau xws li txhuas, qhov twg nws muab lub kaum ntse ntse dua thiab tswj tau cov chip zoo dua. Lub spiral sai dua (lub kaum sab xis siab helix) yog tsim rau cov khoom mos xws li ntoo thiab yas, ua rau cov chip tawm sai. Qee cov bits muaj peb lub flutes, uas tuaj yeem muab qhov chaw zoo dua thiab qhov tiav zoo dua hauv qee cov hlau.
Yog li ntawd, lub ntsis laum yog ib qho cuab yeej siv tau zoo heev uas nws tsim tau raug xam kom zoo. Kev xaiv cov khoom siv substrate, kev siv cov txheej txheem siab heev, thiab cov duab geometry ntawm nws cov flutes yog tsim los kom kov yeej cov khoom siv tshwj xeeb. Qhov kev txhim kho tas mus li no ua kom ntseeg tau tias cov cuab yeej tseem ceeb no tseem nyob ntawm qhov kawg ntawm cov thev naus laus zis tsim khoom.
Lub sijhawm tshaj tawm: Tsib Hlis-08-2026
