HSS Twist Drill

A twist drill ke sesebelisoa se phunyang lesoba le chitja sebakeng sa mosebetsi ka ho itšeha ho potoloha ho amanang le axis e tsitsitseng. E rehiloe lebitso hobane lekolilo la eona la chip e na le sebopeho sa spiral 'me le shebahala joaloka sotho. Li-spiral grooves li ka ba le li-grooves tse 2, 3 kapa ho feta, empa li-grooves tse 2 ke tsona tse atileng haholo. Li-twist drill li ka hatelloa lithulusing tsa ho cheka ka letsoho kapa tsa motlakase kapa tsa sebelisoa mecheng ea ho phunya, mecheng ea ho sila, lathes esita le litsing tsa machining. Lisebelisoa tsa li-Drill bit hangata ke tšepe ea lebelo le holimo kapa carbide.