1. Uhlobo lweConvex: Le bit iza ngeendlela ezimbini, umphathi omnye kunye nomphathi ophindwe kabini.Eyokugqibela isetyenziselwa ubukhulu becala amasuntswana eDDP.
Ii-Convex DDRs zinokugcina izinga eliphezulu lokugrumba xa kusomba amatye aqinileyo naqinileyo, kodwa umcaba wokugrumba akulunganga, ngoko ke ayifanelekanga kubunjineli bokomba obufuna ukucaba okuphezulu kwemingxuma eqhumayo.
I-2, ubuso bohlobo oluthe tye: le milo ye-drill yomelele kwaye yomelele, ifanelekile ukugrumba ilitye eliqinileyo kunye nelitye eliqinileyo, kodwa lilungele ukugrumba umngxuma othe tyaba ayizimfuno eziphezulu zelitye elinzima kunye nelitye elithambileyo.
3. Uhlobo lwe-Concave: isiphelo sobuso bentloko ye-bit kunye nale milo inoxinzelelo lwe-conical, eyenziwa yi-bit kwinkqubo yokugaya ukugcina ukusebenza kwe-centering ye-bit, kwaye umngxuma wokubhobhoza unobulungisa obuhle.Olu hlobo lwesuntswana lunesiphumo esihle sokukhupha umgubo kunye nesantya sokugrumba ngokukhawuleza, kwaye yeyona nto isetyenziswa ngokuqhelekileyo kwi-DWB bit kwimarike.
I-4, isiphelo sobuso obunzulu bombindi we-concave: le milo ye-bit yavela kuhlobo olufanayo lwe-ball tooth bit, indawo esembindini yesiphelo sobuso be-bit inendawo enzulu ye-concave.
Isetyenziselwa ukwenza i-nucleation kwinkqubo yokomba ilitye.Xa ugrumba umngxuma onzulu, unokuqinisekisa ukuthambeka komngxuma wompu.Ilungele kuphela ukugrumba iliwa elithambileyo kunye nelitye eliqinileyo eliphakathi.
Ixesha lokuposa: Jun-03-2019