Ungayikhetha njani i-drill?

Namhlanje, ndiza kwabelana ngendlela yokukhetha i-drill bit ngeemeko ezintathu ezisisiseko zeiqhekeza lokubhola, ezizezi: izinto eziphathekayo, ukugquma kunye neempawu zejiyometri.

1

Indlela yokukhetha izinto eziza kusetyenziswa xa kugrunjwa

Izinto ezisetyenzisiweyo zinokwahlulwa zibe ziintlobo ezintathu: intsimbi ekhawulezayo, intsimbi ekhawulezayo equlethe i-cobalt kunye ne-carbide eqinileyo.

Intsimbi Ekhawulezayo (i-HSS):

Intsimbi ekhawulezayo okwangoku sesona sixhobo sokusika sisetyenziswa kakhulu kwaye singabizi kakhulu. Inxalenye yokubhola yentsimbi ekhawulezayo ingasetyenziswa kungekuphela nje kwiidrili zombane ezisetyenziswa ngesandla, kodwa nakwiindawo ezinozinzo olungcono njengoomatshini bokubhola. Esinye isizathu sokuba intsimbi ekhawulezayo ihlale ixesha elide kukuba isixhobo esenziwe ngentsimbi ekhawulezayo sinokugaywa ngokuphindaphindiweyo. Ngenxa yexabiso layo eliphantsi, ayisetyenziselwa kuphela ukugaywa ibe ziibhithi zokubhola, kodwa ikwasetyenziswa kakhulu ekujikeni izixhobo.

Intsimbi yeCobalt ekhawulezayo (i-HSSCO):

Intsimbi ekhawulezayo eneCobalt inobunzima obungcono kunye nobunzima obubomvu kunentsimbi ekhawulezayo, kwaye ukwanda kobunzima kukwaphucula ukumelana kwayo nokuguguleka, kodwa kwangaxeshanye kuncama inxalenye yobunzima bayo. Ngokufanayo nentsimbi ekhawulezayo: zingasetyenziselwa ukuphucula inani lamaxesha ngokusila.

 

I-Carbide (i-CARBIDE):

I-carbide efakwe isamente yinto edityanisiweyo esekwe kwisinyithi. Phakathi kwazo, i-carbide ye-tungsten isetyenziswa njenge-matrix, kwaye ezinye izinto zezinye izinto zisetyenziswa njenge-binder ukuze itshiswe ngothotho lweenkqubo ezinzima ezifana nokucinezela okushushu kwe-isostatic. Xa kuthelekiswa nentsimbi ekhawulezayo ngokubhekiselele kubulukhuni, ubulukhuni obubomvu, ukumelana nokuguguleka, njl.njl., kukho uphuculo olukhulu, kodwa ixabiso lezixhobo ze-carbide ezifakwe isamente libiza kakhulu kunentsimbi ekhawulezayo. I-Carbide ineengenelo ezingaphezulu kunezixhobo zesixhobo zangaphambili ngokubhekiselele kubomi bezixhobo kunye nesantya sokucubungula. Ekugayweni kwezixhobo ngokuphindaphindiweyo, kufuneka izixhobo zobuchwephesha zokugaywa.

2

Indlela yokukhetha i-drill coating

Iingubo zingahlulwahlulwa zibe ziintlobo ezintlanu ezilandelayo ngokwemida yokusetyenziswa.

Ayigqunywanga:

Iimela ezingagqunywanga zezona zibiza kancinci kwaye zihlala zisetyenziselwa umatshini wokwenza izinto ezithambileyo ezifana nee-alloys ze-aluminium kunye nentsimbi ethambileyo.

Ukwaleka kwe-oxide emnyama:

Iingubo ezifakwe i-oxidized zinokubonelela ngokuthambisa okungcono kunezixhobo ezingagqunywanga, kwaye zingcono nakwimeko yokuthambisa kunye nokumelana nobushushu, kwaye zinokwandisa ubomi benkonzo ngaphezu kwe-50%.

Ukwambathisa i-titanium nitride:

I-titanium nitride yeyona nto isetyenziswa kakhulu xa kusenziwa izinto zokugquma kwaye ayifanelekanga xa kusetyenzwa izinto ezinobunzima obuphezulu kunye nobushushu obuphezulu xa kusetyenzwa.

Ugqubuthelo lwe-titanium carbonitride:

I-titanium carbonitride yenziwe nge-titanium nitride kwaye inobushushu obuphezulu kunye nokumelana nokuguguleka, idla ngokuba mfusa okanye luhlaza okwesibhakabhaka. Isetyenziselwa ukwenza izinto zokusebenza zentsimbi ngomatshini kwindawo yokusebenzela yaseHaas.

Ukwaleka kweTitanium yeAluminiyam Nitride:

I-aluminium titanium nitride iyakwazi ukumelana nobushushu obuphezulu kunazo zonke izinto ezikhankanyiweyo apha ngasentla, ngoko ke ingasetyenziswa kwiindawo ezisika kakhulu. Umzekelo, ukucubungula ii-superalloys. Ikwafanelekile ekucutshungulweni kwentsimbi kunye nentsimbi engatyiwayo, kodwa ngenxa yezinto eziqulathe i-aluminium, kuya kwenzeka iimpembelelo zeekhemikhali xa kucutshungulwa i-aluminium, ngoko ke kuphephe ukucubungula izinto eziqulathe i-aluminium.

3

Ijiyometri yebhithi yokubhola

Iimpawu zejometri zingahlulwahlulwa zibe ziinxalenye ezintathu ezilandelayo:

Ubude

Umlinganiselo wobude nobubanzi ubizwa ngokuba yi-double diameter, kwaye okukhona i-double diameter incinci, kokukhona ubulukhuni bungcono. Ukukhetha i-drill enobude bomphetho ukuze isuswe iitships kunye nobude obufutshane bokuxhoma kunokuphucula ubulukhuni ngexesha lokwenziwa kwe-machining, ngaloo ndlela kwandisa ubomi benkonzo yesixhobo. Ubude obungonelanga be-blade bunokonakalisa i-drill.

I-engile yencam yokubhola

I-engile ye-drill tip ye-118° mhlawumbi yeyona ixhaphakileyo kwi-machining kwaye idla ngokusetyenziselwa iintsimbi ezithambileyo ezifana nentsimbi ethambileyo kunye ne-aluminium. Uyilo lwale engile alusoloko luzibeka phakathi, nto leyo ethetha ukuba akunakuphepheka ukutshaya umngxuma ophakathi kuqala. I-engile ye-drill tip ye-135° idla ngokuba nomsebenzi wokuzibeka phakathi. Ekubeni kungekho mfuneko yokutshaya umngxuma ophakathi, oku kuya kwenza kungabi yimfuneko ukutshaya umngxuma ophakathi ngokwahlukeneyo, ngaloo ndlela konge ixesha elininzi.

I-engile yeHelix

I-engile ye-helix engama-30° lukhetho olufanelekileyo kwizinto ezininzi. Kodwa kwiindawo ezifuna ukukhutshwa okungcono kweetshiphusi kunye nomphetho onamandla wokusika, i-drill ene-engile encinci ye-helix ingakhethwa. Kwizinto ezilukhuni ukwenziwa ngomatshini ezifana nentsimbi engagqwaliyo, uyilo olune-engile enkulu ye-helix lunokukhethwa ukuhambisa i-torque.