Ukuthenga iseti yemidlalo yokuzilolonga kukongela imali kwaye—kuba zihlala zifika ngohlobo oluthile lwebhokisi—kukunika indawo yokugcina kunye nokuchongwa okulula. Nangona kunjalo, umahluko obonakala uncinci kwimilo kunye nezinto ezisetyenziswayo unokuba nefuthe elikhulu kwixabiso kunye nokusebenza.
Silungiselele isikhokelo esilula sokukhetha iseti ye-drill bit kunye neengcebiso ezithile. Ukhetho lwethu oluphezulu, i-IRWIN's 29-Piece Cobalt Steel Drill Bit Set, inokujongana nayo nayiphi na imisebenzi yokugrumba - ingakumbi iintsimbi eziqinileyo, apho ii-drill bits eziqhelekileyo zingaphumeleli khona.
Umsebenzi wokubhola ulula, kwaye nangona uyilo olusisiseko lomngxuma lungazange lutshintshe kangangeminyaka engamakhulu, imilo yencam inokwahluka ukuze isebenze kakuhle kwizinto ezahlukeneyo.
Iintlobo eziqhelekileyo zii-twist drills okanye ii-rough drills, eziyindlela elungileyo yokukhetha yonke indawo. Umahluko omncinci yi-brad tip drill, eyenzelwe ukusetyenziswa ngomthi kwaye inencam emxinwa, ebukhali ethintela i-drill ukuba ingashukumi (ekwaziwa nangokuhamba). Iibhithi zomatshisi zilandela iphethini efanayo nee-twist drills, kodwa zinencam ebanzi, ethe tyaba yokusingatha amandla aphezulu okubetha abandakanyekayo.
Xa sele ingaphezulu kwe-intshi ububanzi, ii-twist drills azisebenzi. I-drill ngokwayo iba nzima kakhulu kwaye inkulu. Inyathelo elilandelayo yi-spade drill, ethe tyaba enezipikili kumacala omabini kunye ne-brad point embindini. Ii-Forstner kunye nee-serrated bits nazo ziyasetyenziswa (zivelisa imingxunya ecocekileyo kunee-spade bits, kodwa zibiza kakhulu), eyona inkulu ibizwa ngokuba zii-hole saws. Endaweni yokugrumba umngxuma ngendlela eqhelekileyo, ezi zisika isangqa sezinto. Eyona inkulu inganqumla imingxunya kwii-intshi ezininzi ububanzi kwi-concrete okanye kwiibhloko ze-cinder.
Uninzi lwee-drill bits zenziwe ngentsimbi ekhawulezayo (HSS). Ayibizi kakhulu, kulula kakhulu ukuvelisa imiphetho ebukhali yokusika, kwaye ihlala ixesha elide. Ingaphuculwa ngeendlela ezimbini: ngokutshintsha ulwakhiwo lwentsimbi okanye ukuyigquma ngezinye izinto. Iintsimbi zeCobalt kunye nechrome vanadium ziyimizekelo yazo. Zinokuba nzima kakhulu kwaye zingagugi, kodwa zibiza kakhulu.
Iingubo zifikeleleka lula kuba ziingqimba ezincinci emzimbeni we-HSS. I-tungsten carbide kunye ne-black oxide zithandwa kakhulu, njengoko kunjalo ne-titanium kunye ne-titanium nitride. Ii-drill bits ezifakwe idayimani zeglasi, i-ceramic kunye nee-masonry bits ezinkulu.
Iseti esisiseko yeebhithi ezilishumi elinesibini okanye ngaphezulu ze-HSS kufuneka ibe yinto eqhelekileyo kuyo nayiphi na ikhithi yasekhaya. Ukuba uyaphula enye, okanye ukuba uneemfuno ezithile ezingaphezulu komgangatho wayo, ungasoloko uthenga enye endaweni yayo. Iseti encinci yeebhithi zomatshe yenye into esisiseko oyenzayo.
Ngaphaya koko, sisisho esidala sokuba nezixhobo ezifanelekileyo zomsebenzi. Ukuzama ukwenza umthambo ongafanelekanga ukuze wenze umsebenzi kuyacaphukisa kwaye kunokonakalisa oko ukwenzayo. Azibizi kakhulu, ngoko ke kufanelekile ukutyala imali kuhlobo olufanelekileyo.
Ungathenga iseti yeedrill ezingabizi kakhulu ngeedola ezimbalwa, kwaye ngamanye amaxesha uzenzele ngokwakho, nangona zihlala zibuthuntu ngokukhawuleza. Asinakucebisa iibhiti zemasonry ezikumgangatho ophantsi—ngamaxesha amaninzi, azincedi nganto. Iindidi ngeendidi zeebhiti zemasonry ezisemgangathweni ophezulu ziyafumaneka nge-$15 ukuya kwi-$35, kuquka iibhiti zemasonry ezinkulu ze-SDS. Ixabiso le-cobalt liphezulu, kwaye iiseti ezinkulu zinokufikelela kwi-$100.
A. Kubantu abaninzi, mhlawumbi akunjalo. Ngokwesiqhelo, zibekwe kwiidigri ezili-118, nto leyo ilungele iinkuni, uninzi lwezinto ezidityanisiweyo, kunye neentsimbi ezithambileyo ezifana nobhedu okanye i-aluminium. Ukuba ugrumba izinto eziqinileyo kakhulu ezifana nesinyithi esityhidiweyo okanye intsimbi engatyiwayo, kucetyiswa i-engile yeedigri ezili-135.
A. Kunzima kancinci ukuyisebenzisa ngesandla, kodwa kukho iintlobo ngeentlobo zezinto zokutshiza okanye izixhobo zokutshiza ezahlukeneyo ezikhoyo. Iidrili zeCarbide kunye needrili zeTitanium Nitride (TiN) zifuna isixhobo sokutshiza esisekelwe kwidayimani.
Oko sikuthandayo: Ukhetho olubanzi lobukhulu obuqhelekileyo kwikhasethi elula yokutsala. Yifudumeze kwaye uyigugise i-cobalt ukuze isebenze ixesha elide. I-engile ye-135-degree inika ukusika kwesinyithi okusebenzayo. Isihlangu serabha sikhusela ikesi.
Oko sikuthandayo: Ixabiso elihle, logama nje uqonda imida yee-HSS bits. Ibonelela ngezixhobo zokuzilolonga kunye nabaqhubi kwimisebenzi emininzi ejikeleze ikhaya, igaraji kunye negadi.
Oko sikuthandayo: Kukho ii-drill bits ezintlanu kuphela, kodwa zibonelela ngobukhulu bemingxuma engama-50. I-titanium coating ukuze ihlale ixesha elide. Uyilo oluzijongayo, ukuchaneka okuphezulu. Iiflethi kwi-shank zithintela i-chuck ukuba ingatyibiliki.
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Ixesha lokuthumela: Feb-16-2022
