Nantsi indlela yokukhetha isuntswana ngokusekwe kumasuntswana amathathu asisiseko: imathiriyeli, ukwambathisa kunye neempawu zejometri.
01, indlela yokukhetha izinto eziphathekayo ze-drill
Izixhobo zinokwahlulwa zibe ziindidi ezintathu: isantya esiphezulu sentsimbi, i-cobalt isantya esiphezulu sentsimbi kunye ne-carbide eqinileyo.
Intsimbi yesantya esiphezulu (HSS) :
Isinyithi esinesantya esiphezulu sisetyenziswe njengesixhobo sokusika iminyaka engaphezu kwekhulu ukususela ngo-1910. Sesona sixhobo sisetyenziswa kakhulu kunye nesona sixhobo sokusika esikhoyo namhlanje.Iibhithi zetsimbi ezinesantya esiphezulu zingasetyenziswa zombini kwi-drill yezandla nakwiindawo ezizinzileyo ezifana noomatshini bokomba.Esinye isizathu sokuqina kwentsimbi yesantya esiphezulu kukuba izixhobo zayo, ezinokulolwa ngokuphindaphindiweyo, azibizi mali ininzi ngokwaneleyo ukuba zingasetyenziswa kungekuphela nje njengezixhobo zokubhola kodwa nanjengezixhobo zokujika.
Intsimbi yeCobalt enesantya esiphezulu (HSSE):
I-Cobalt-equkethe i-high speed steel inobunzima obungcono kunye nobunzima obubomvu kunentsimbi yesantya esiphezulu.Ukunyuka kobunzima nako kwandisa ukuchasana nokunxiba, kodwa kwangaxeshanye, ubunzima obuthile bunikelwa.Njengentsimbi enesantya esiphezulu, zinokucolwa ukuphucula ukusetyenziswa kwazo.
ICARBIDE:
I-carbide ene-cemented yimpahla edibeneyo yesiseko sesinyithi.Phakathi kwazo, i-tungsten carbide isetyenziswa njenge-matrix, kwaye ezinye izinto zezinye izinto zisetyenziswa njengezinto zokuncamathelisa ngothotho lweenkqubo ezintsonkothileyo ezinje ngokucinezela kwe-isostatic eshushu yokuntywila.Kubunzima, ubunzima obubomvu, ukuxhathisa ukunxiba kunye neminye imiba xa kuthelekiswa nentsimbi yesantya esiphezulu, kukho uphuculo olukhulu, kodwa ixabiso lesixhobo se-carbide nalo libiza kakhulu kunentsimbi yesantya esiphezulu.I-carbide ene-cemented kubomi besixhobo kunye nesantya sokucubungula kunezixhobo ezidlulileyo zesixhobo zineenzuzo ezininzi, kwisixhobo sokugaya ngokuphindaphindiweyo, imfuneko yezixhobo zokugaya iingcali.
02, indlela yokukhetha i-bit yengubo
Ukwaleka kunokwahlulwa ngokwezi ntlobo zi-5 zilandelayo ngokoluhlu lokusetyenziswa.
I-Uncoated: Izixhobo zokusika ezingafakwanga zezona ziphantsi, zihlala zisetyenziselwa ukusetyenzwa kwe-aluminium alloy, intsimbi ephantsi yekhabhoni kunye nezinye izinto ezithambileyo.
I-black oxide coating: i-oxidation coating inokubonelela ngcono kune-lubricity yesixhobo esingafakwanga, inokumelana ne-oxidation engcono kunye nokumelana nobushushu, kwaye inokuphucula ubomi benkonzo ngaphezu kwe-50%.
I-Titanium nitride yokwambathisa: I-Titanium nitride yeyona nto ixhaphakileyo yokugquma, ayifanelekanga ukusetyenzwa ngobulukhuni obuphezulu kunye nezixhobo zobushushu obuphezulu.
I-Titanium carbon nitride coating: I-Titanium carbon nitride iphuhliswa kwi-titanium nitride, inokumelana nokushisa okuphezulu kunye nokumelana nokunxiba, ngokuqhelekileyo imfusa okanye eluhlaza okwesibhakabhaka.Isetyenziswa kwiworkshop kaHaas ukwenza iintsimbi zokusetyenzwa.
I-Aluminiyam nitride i-titanium yokwambathisa: Ukwaleka i-aluminiyam i-nitride titanium ngaphezu kwazo zonke ezi ngasentla zixhathisa ubushushu obuphezulu, ngoko unokusebenzisa kwiimeko zokusika eziphezulu.Ezifana nokulungisa ii-superalloys.Ikwafanelekile ukucutshungulwa kwentsimbi kunye nensimbi engenasici, kodwa ngenxa yokuba iqulethe izinto ze-aluminium, ukuphendulwa kweekhemikhali kuya kwenzeka ekuqhutyweni kwe-aluminium, ngoko ke kuyimfuneko ukuphepha ukuqhutyelwa kwezinto eziqukethe i-aluminium.
Ngokuqhelekileyo, i-cobalt ethwele i-drill kunye ne-titanium carbonitride okanye i-titanium nitride yokugqoka isisombululo soqoqosho ngakumbi.
03. Iimpawu zejometri ze-drill bit
Iimpawu zejometri zinokwahlulwa zibe ngamacandelo amathathu alandelayo:
Ubude
Umlinganiselo wobude ukuya kwidayamitha ubizwa ngokuba yi-diameter ephindwe kabini, kwaye i-diameter encinci, ingcono ukuqina.Ukukhetha isuntswana ngobude obuchanekileyo bomphetho wokususwa kwetshiphu kunye nobude obufutshane obugqithileyo kunokuphucula ubungqongqo bomatshini, ngaloo ndlela kwandisa ubomi besixhobo.Ubude bomphetho obungonelanga bunokonakalisa isuntswana le-drill.
Drill incam yeAngle
I-drill point Angle ye-118 ° mhlawumbi ixhaphake kakhulu kwi-machining kwaye isetyenziswa ngokuqhelekileyo kwiintsimbi ezithambileyo ezifana nentsimbi epholileyo kunye ne-aluminium.Olu luyilo lwe-Angle alusoloko luzingca, nto leyo ethetha ukuba umngxuma ophakathi kufuneka ucocwe kuqala.I-135 ° i-drill tip i-Angle idla ngokuzingca, egcina ixesha elininzi ngokususa imfuno yokucubungula umngxuma omnye wokugxila.
I-Angle eSpiral
I-Angle ye-30 ° spiral lukhetho olulungileyo kwizinto ezininzi.Nangona kunjalo, kwiindawo apho ukusika kususwe ngcono kwaye imiphetho yokusika yomelele, incinci ene-Angle ejikelezayo encinci inokukhethwa.Kwizinto ezisebenza nzima ezifana nensimbi engenasici, uyilo oluneAngle enkulu ejikelezayo ingasetyenziselwa ukuhambisa i-torque.
Ixesha lokuposa: Sep-01-2022