Intsimbi engagqwaliyo yenye yezona zinto zinzima kakhulu ukugrumba. Ngokungafaniyo nentsimbi ethambileyo okanye i-aluminium, iyazigweba iindlela ezingezizo zobuchule kunye nezixhobo ezingalunganga ngokukhawuleza nangokubonakalayo - ngokusebenzisa iibhithi ezaphukileyo, imingxunya emikhulu, kunye nokugqitywa komphezulu orhabaxa. Esi sikhokelo sichaza isizathu sokuba intsimbi engagqwaliyo iziphathe ngale ndlela, kunye nokuba kuthetha ukuthini oko ekukhetheni ibhithi yokugrumba efanelekileyo, ukuseta iiparameter ezifanelekileyo, kunye nokugcina umgangatho ungaguquki kuyo yonke imveliso.
Kutheni kunzima ukugrumba intsimbi engagqwaliyo
Ukuqonda ingxaki kuqala ngezinto ezisetyenzisiweyo. Intsimbi engagqwaliyo — ingakumbi iiklasi ze-austenitic ezifana ne-304 kunye ne-316 — ineempawu ezimbini ezenza ukugrumba kube nzima kakhulu kunezinye izinyithi ezininzi.
Ukuqinisa umsebenzi
Xa intsimbi engagqwaliyo iphantsi koxinzelelo loomatshini — kuquka amandla okusika avela kwi-drill — izinto ezikwindawo yokusika ziyaqina ngokukhawuleza. Oku kubizwa ngokuba kukuqina komsebenzi, kwaye kwenzeka ngokukhawuleza kwiiklasi ze-austenitic stainless kunakwezinye izinto zobunjineli eziqhelekileyo.
Ngokwesiqhelo oku kuthetha ukuba: ukuba i-drill bit iyema, icotha, okanye ikhuhla endaweni yokusika kakuhle, umphezulu ongaphantsi kwe-bit uyaqina kwimizuzwana embalwa. I-cutting pass elandelayo idibana nomaleko onzima kunowangaphambili. Oku kukhawulezisa ukuguguleka kwesixhobo kakhulu kwaye, ukuba ayilungiswanga, kukhokelela ekusebenzeni nzima nzulu emngxunyeni - okwenza umsebenzi ube nzima ngakumbi njengoko uqhubeka.
Ukuqhuba okuphantsi kobushushu
Intsimbi engagqwaliyo ayiqhubi kakuhle ubushushu xa ithelekiswa nentsimbi ethambileyo okanye i-aluminium. Ngexesha lokugrumba, ukusika kuvelisa ubushushu obukhulu. Kwizinto ezinobushushu obuhle, uninzi lobo bushushu luthwalwa yi-workpiece kunye neetships. Kwintsimbi engagqwaliyo, ubushushu bugxila kumphetho wokusika endaweni yoko.
Ukudibanisa ukuqina komsebenzi kunye noxinzelelo lobushushu kudala ingxaki eyongezelelekileyo: njengoko i-drill bit ishushu, ubunzima bayo kumphetho wokuqala buqala ukwehla. Umphetho othambileyo usika kancinci, uvelisa ukungqubana okungakumbi, udala ubushushu obuninzi - kwaye umjikelo uyaqhubeka de i-bit ingaphumeleli.
Ukukhetha i-drill bit efanelekileyo: M2 vs M35
Eyona nto ibalulekileyo xa kugrunjwa intsimbi engatyiwayo zizinto zokugrumba. Iindlela ezimbini ezisetyenziswa kakhulu kwiindawo zoshishino yintsimbi ye-M2 kunye ne-M35 ekhawulezayo. Ukuqonda umahluko phakathi kwazo kubaluleke kakhulu kunokuba uninzi lwabathengi luqonda.
Intsimbi yesantya esiphezulu ye-M2
I-M2 yeyona ntlobo iqhelekileyo yentsimbi ekhawulezayo kwaye yeyona nto isetyenziswa kakhulu ekubholeni izinto emhlabeni. Ukwakheka kwayo — malunga ne-6% ye-tungsten, i-5% ye-molybdenum, i-4% ye-chromium, kunye ne-2% ye-vanadium — iyenza ibe lukhuni kakuhle, ibe namandla afanelekileyo, kwaye isebenze kakuhle kwiindidi ezahlukeneyo zezinto eziqhelekileyo.
Umda we-M2 kumsebenzi wentsimbi engagqwaliyo bubunzima bayo obushushu, obukwabizwa ngokuba bubunzima obubomvu. Oku kubhekisa kubuchule bento yokugcina ubunzima bayo kumaqondo obushushu aphezulu. I-M2 iqala ukulahlekelwa bubunzima ngendlela ecacileyo malunga nama-550–600°C. Kwindawo yokubhola intsimbi engagqwaliyo — ingakumbi kwiindawo zemveliso okanye xa ukupholisa kunganelanga — amaqondo obushushu asemgangathweni adlula rhoqo olu luhlu.
Xa umphetho uthambile, uyeka ukusika uze uqale ukukhuhla. Ukungqubana kuyanda, ubushushu buyanda ngakumbi, umaleko oqinisiweyo uba nzima ukungena, kwaye ubomi besixhobo buyehla kakhulu. Ukusilela akusoloko kusenzeka ngequbuliso - kudla ngokubonakala njengokuziva kokutya okunzima kancinci, ukwanda kokubhoboza okujikeleze umngxuma, kunye nokuwohloka kobubanzi bomngxuma ngaphambi kokuba iqhekeza liphele.
Intsimbi ye-M35 cobalt ekhawulezayo
I-M35 isebenzisa ulwakhiwo olufana nolwe-M2 kunye nokongezwa kwe-cobalt emalunga ne-5%. I-Cobalt ayithathi nxaxheba ngokuthe ngqo ekusikeni - ayivelisi ii-carbides okanye yongeze ubulukhuni kubushushu begumbi nangayiphi na indlela enenjongo. Indima yayo ngokukodwa kukuzinzisa i-matrix yentsimbi kubushushu obuphezulu, iphakamisa indawo apho ubulukhuni buqala ukonakala khona.
I-M35 igcina ubulukhuni obuluncedo ukuya kuthi ga kwi-630–650°C. Umahluko we-50–80°C xa uthelekiswa ne-M2 ungabonakala uphantsi, kodwa ubomi besixhobo bunobuthathaka kakhulu kubushushu kolu luhlu. Kwiimvavanyo ezilinganisiweyo ezilawulwayo kwi-austenitic stainless steel, i-M35 idla ngokuvelisa imingxunya ephindwe kabini ukuya kathathu nge-bit kune-M2 phantsi kweemeko ezifanayo - kwaye idla ngokuba nkulu ngakumbi xa umsebenzi ubandakanya ukunqunyulwa okuphazamisekileyo, amazinga okutya aguquguqukayo, okanye ukupholisa okungaphelelanga.
Kubathengi, uthelekiso lwezoqoqosho lulula: ii-M35 bits zibiza ngaphezulu ngeyunithi nganye, kodwa ixabiso ngomngxuma ogqojoziweyo — libandakanya amaxesha okutshintshwa, ixesha lokungasebenzi komatshini, kunye namazinga okulahlwa komgangatho ophantsi wemingxuma — ngokubanzi liphantsi kuyo nayiphi na imeko yemveliso equka intsimbi engagqwaliyo.
Xa i-M2 isamkeleka
I-M2 ayifanelekanga ngokupheleleyo kwintsimbi engagqwaliyo. Phantsi kwezi meko zilandelayo, ingenza kakuhle:
•Isantya sokusika esiphantsi kunye ne-coolant enkulu yamanzi
•Ukubhoboza okuncinci, okuhlala ixesha elide apho iqhekeza linexesha lokuphola phakathi kwemingxunya
•Izinto ezincinci (≤3mm) apho i-drill idibana ne-workpiece okwethutyana
•Xa imida yeendleko yenza i-M35 ingasebenzi kwaye ukunyamezela umgangatho wemingxuma kubanzi
Kwimveliso enomthamo omkhulu, kwizinto ezityebileyo, okanye apho ukuchaneka kobukhulu kubalulekile, i-M35 lolona khetho luthembekileyo.
Isantya sokusika kunye nesantya sokutya
Nokuba kukho izinto ezichanekileyo zebhithi, iiparameter zokusika ezingalunganga ziya kubangela ukungaphumeleli kwangethuba. Izinto ezimbini eziguquguqukayo zokulawula zisantya sokusika (esichazwa njengesantya somphezulu kwi-m/min, okanye esiguqulwa sibe yi-RPM ngobubanzi obunikiweyo) kunye nesantya sokutya (ukuba idrill iqhubela phambili ngesantya esingakanani ngokujikeleza ngakunye).
Isantya sokusika
Kwintsimbi engagqwaliyo, isantya somphezulu esicetyiswayo seebhithi zokubhola ze-HSS siphantsi kakhulu kunesentsimbi ethambileyo. Isikhokelo esiqhelekileyo seeklasi ze-austenitic (304, 316):
•I-M2 HSS: Isantya somphezulu se-10–15 m/min
•I-M35 cobalt HSS: Isantya somphezulu esiyi-15–25 m/min
Ezi ziguqulwa zibe yi-RPM njenge: RPM = (isantya somphezulu × 1000) ÷ (π × ububanzi bokubhola nge-mm). I-10mm M35 bit kwi-316 stainless steel, ejolise kwi-20 m/min, ingasebenza malunga ne-637 RPM.
Ukubaleka ngesantya esiphezulu yeyona mpazamo ixhaphakileyo xa kugrunjwa intsimbi engatyiwayo. Isantya esiphezulu sivelisa ubushushu ngokukhawuleza kunokuba i-coolant inokuyisusa kwaye ngokukhawuleza kunokuba itship inokuyithwala. I-bit iyatshisa kakhulu, ilahlekelwe bubunzima bomphetho, kwaye iyasilela kwangethuba. Abaqhubi abaqhele ukugrunjwa intsimbi engatyiwayo okanye i-aluminium badla ngokusebenzisa i-stainless ngesantya esiphezulu ngokuphindwe kabini ukuya kathathu.
Izinga lokutya
Izinga lokutya kufuneka libe phezulu ngokwaneleyo ukuze iqhekeza lisike rhoqo endaweni yokukhuhla. Ukutya okulula kakhulu kuvumela iqhekeza ukuba lityibilike phezu komphezulu oqinisiweyo ngaphandle kokungena ngaphakathi - kuvelisa ubushushu ngaphandle kokususa izinto. Le yeyona nto ibangela ukuba umsebenzi uqine ngaphambi kwexesha emngxunyeni.
Amanqanaba okutya acetyiswayo kwintsimbi engagqwaliyo (ngokujikeleza ngakunye): 0.05–0.10 mm kwiibhithi ezifikelela kububanzi obuyi-5mm; 0.10–0.20 mm kwii-5–15mm; 0.20–0.35 mm ngaphezu kwe-15mm. La ngamanqaku okuqala — lungisa ngokusekelwe ekwakhekeni kwetshiphusi ebonweyo, isandi sokusika, kunye nobushushu kwincam yokubhola.
Eyona nto ithembekileyo ebonisa ukuba iiparameter zichanekile yitshiphu. Itshiphu ebhityileyo negobileyo ibonisa ukusika ngokuchanekileyo. Iitshiphu ezinde, ezinamaqhina zibonisa ukuba ukutya kukhaphukhaphu kakhulu. Iitshiphu ezinombala omdaka okanye omdaka zibonisa ubushushu obugqithisileyo.
Isibandisi kunye nokuthambisa
Isibandisi asikhethi xa kugrunjwa intsimbi engagqwaliyo. Indima yaso iphindwe kabini: ukususa ubushushu kwindawo yokusika, kunye nokuthambisa ujongano oluphakathi kwee-bit flutes kunye nodonga lomngxuma ukunciphisa ubushushu obubangelwa kukungqubana.
Isixhobo sokupholisa esinomswakama (ioyile enyibilikayo exutywe malunga ne-8–10%) yeyona ndlela isebenzayo kwiindawo zomatshini. Kwimisebenzi yokubhola ngesandla okanye yokucinezela i-drill ngaphandle kwesixhobo sokupholisa esinomswakama, ulwelo lokusika olufakwe ngqo kwi-bit kunye nendawo yokungena ngaphambi nangexesha lokubhola lubalulekile. Ukubhola okomileyo kwentsimbi engagqwaliyo kufuneka kuthintelwe kuyo nayiphi na imeko apho umgangatho wemingxuma okanye ubomi besixhobo bubalulekile.
Umthombo wesipholisi kufuneka ufikelele kwindawo yokusikwa. Isipholisi sangaphandle esikhukulayo kwiindawo zokusebenza ezixineneyo (ngaphezulu kwe-15–20mm) sisenokungayipholisi ngokwaneleyo incam yebhithi — kwezi meko, ukusetyenziswa kwezixhobo zesipholisi okanye ukurhoxiswa kwebhithi rhoqo ukuze kususwe iitships kwaye kuvumele ukupholisa kuyimfuneko.
Ijiyometri kunye ne-angle yenqaku
Iibhithi zokubhola ezisemgangathweni ze-118° point drill zenzelwe ukusetyenziswa ngokubanzi. Kwintsimbi engatyiwayo, i-135° split-point geometry isebenza ngakumbi ngezizathu ezibini.
Okokuqala, indawo eqhekekileyo isusa umphetho we-chisel okhoyo kwiibhithi ezisemgangathweni zomhlaba. Umphetho we-chisel awunqumli — uyatyhala kwaye ukrwele, uvelise ubushushu ngaphandle kokususa iitshiphusi. Ukuwususa kuthetha ukuba ibhithi iqala ukusika ngoko nangoko xa idibana, nto leyo enciphisa ukunyuka kobushushu bokuqala kunye nokuthambekela kokutyibiliza.
Okwesibini, i-engile engaphantsi kakhulu ye-135° isasaza amandla okusika ngokulinganayo kwimilebe yokusika, inciphisa umthwalo kwindawo nganye kwaye iphucula ukuqina kwee-bits kwizixhobo ezinzima okanye eziqinisa umsebenzi.
Kwiinkqubo ezininzi zokubhola ngentsimbi engagqwaliyo, i-M35 cobalt bit ye-135° split-point yeyona nkcazelo ichanekileyo yokuqala.
Ukuseta kunye nokubamba umsebenzi
Ukuqina kwesetingi kubaluleke kakhulu ngentsimbi engagqwaliyo kunezinto ezithambileyo. Nakuphi na ukungcangcazela okanye ukuphambuka phakathi kwebhiti kunye nesixhobo somsebenzi kubangela ukuba ibhiti ikhuhleke rhoqo endaweni yokusikwa rhoqo, nto leyo ekhuthaza ukuqina komsebenzi kunye nokuqhekeka komphetho.
Izinto zokusebenza mazibotshwe ngokuqinileyo, zingabanjwa ngesandla. I-drill bit kufuneka ihlolwe ukuba ayisebenzi ngaphambi kokuba iqale imveliso - nokuba zincinci kangakanani na izinto ezingasetyenziswayo zikhawulezisa ukuguguleka ngokungalinganiyo kwimilebe enqunyulwayo. Ulwandiso olufutshane lwee-bits lukhethwa kunezo zinde; ukufikelela ixesha elide kwandisa ukuphambuka phantsi komthwalo.
Ukuze ungene emngxunyeni ngeshiti elincinci elingenasici, uphawu oluphakathi okanye umngxuma wokulinganisa kunciphisa ukutyibiliza ekuqaleni kokusika. Ukuze uphume emngxunyeni, ipleyiti engasemva eyenziwe ngentsimbi ethambileyo okanye i-aluminium ithintela ukukrazuka kwezinto ezidla ngokwenzeka njengoko iqhekeza liphuma.
Isishwankathelo: iinguqu ezibalulekileyo zokulawula
•Izinto zeBit: sebenzisa i-M35 cobalt HSS kuyo nayiphi na imveliso yokugrumba ngentsimbi engagqwaliyo. I-M2 yimvumelwano.
•Isantya sokusika: sebenzisa kancinci kunokuba ubuya kwenza kwintsimbi ethambileyo. Ubushushu yeyona ndlela iphambili yokusilela.
•Izinga lokutya: gcina ukutya okulungileyo ngamaxesha onke. Ukuhlikihla kancinci kubangela ukuba kuqine.
•Isibandisi: faka rhoqo kwindawo yokusika. Ukubhola okomileyo kunciphisa kakhulu ubomi besixhobo.
•Ijiyometri: I-split-point eyi-135° ingcono kune-118° eqhelekileyo kwi-stainless stainless.
•Ukuqina: qinisa ngokuqinileyo, nciphisa ukutyibilika, phepha ukwandiswa okude.
Ukubhola ngentsimbi engagqwaliyo akunzima ngokwemvelo — kuba nzima xa kukhethwa izixhobo okanye iiparameters zezixhobo ezahlukeneyo. Ngolwazi olufanelekileyo lwebhithi, isantya esifanelekileyo kunye nokutya, kunye nokusetyenziswa rhoqo kwesibandisi, ilawuleka ngokupheleleyo kwinqanaba lemveliso.
Ixesha leposi: Meyi-06-2026