Insimbi engagqwali ingenye yezinto ezidinga kakhulu ukubholwa. Ngokungafani nensimbi ethambile noma i-aluminium, ijezisa ubuchwepheshe obubi kanye namathuluzi angalungile ngokushesha nangokubonakalayo - ngokusebenzisa izingcezu eziphukile, imigodi emikhulu, kanye nokuqedwa kwendawo eqinile. Lo mhlahlandlela uchaza ukuthi kungani insimbi engagqwali iziphatha ngendlela eziphatha ngayo, nokuthi lokho kusho ukuthini ekukhetheni i-drill bit efanele, ukusetha amapharamitha afanele, kanye nokugcina ikhwalithi ihambisana kuyo yonke inqubo yokukhiqiza.
Kungani kunzima ukubhoboza insimbi engagqwali
Ukuqonda inkinga kuqala ngezinto ngokwazo. Insimbi engagqwali — ikakhulukazi amazinga e-austenitic afana no-304 no-316 — inezakhiwo ezimbili ezenza ukubhoboza kube nzima kakhulu kunezinye izinsimbi eziningi.
Ukuqinisa umsebenzi
Uma insimbi engagqwali icindezelwa ngomshini — kufaka phakathi amandla okusika avela ku-drill — izinto ezisendaweni yokusika ziyaqina ngokushesha. Lokhu kubizwa ngokuthi ukuqina komsebenzi, futhi kwenzeka ngokushesha kuma-austenitic stainless grades kunanoma iyiphi enye into evamile yobunjiniyela.
Empeleni lokhu kusho ukuthi: uma i-drill bit ima, yehlisa ijubane, noma ikhuhla esikhundleni sokusika kahle, indawo engaphansi kwe-bit iyaqina ngemizuzwana. I-cutting pass elandelayo ihlangana nesendlalelo esinzima kunesangaphambi kwayo. Lokhu kusheshisa ukuguguleka kwamathuluzi kakhulu futhi, uma kungalungiswanga, kuholela ekuqineni komsebenzi ojulile emgodini - okwenza umsebenzi ube nzima kancane kancane njengoba uqhubeka.
Ukushisa okuphansi
Insimbi engagqwali ayiqhubeki kahle nokushisa uma kuqhathaniswa nensimbi ethambile noma i-aluminium. Ngesikhathi sokubhoboza, ukusika kukhiqiza ukushisa okukhulu. Entweni enomsinga omuhle wokushisa, ingxenye enkulu yalokho kushisa ithathwa yi-workpiece kanye nama-chips. Ensimbi engagqwali, ukushisa kugxila emphethweni wokusika esikhundleni salokho.
Ukuhlanganiswa kokuqina komsebenzi kanye nokuhlushwa kokushisa kudala inkinga eyinkimbinkimbi: njengoba i-drill bit ishisa, ubulukhuni bayo enqenqemeni lokuqala buqala ukwehla. I-edge ethambile inquma kancane kahle, idala ukungqubuzana okwengeziwe, idala ukushisa okwengeziwe - futhi umjikelezo uyaqhubeka kuze kube yilapho i-bit ihluleka.
Ukukhetha i-drill bit efanele: M2 vs M35
Inguquko eyodwa ebaluleke kakhulu ekubholeni insimbi engagqwali yinto yokubopha i-drill bit. Izinketho ezimbili ezivame ukusetshenziswa ezindaweni zezimboni yinsimbi yesivinini esikhulu i-M2 kanye ne-M35. Ukuqonda umehluko phakathi kwazo kubaluleke kakhulu kunalokho abathengi abaningi abakuqaphelayo.
Insimbi yesivinini esikhulu ye-M2
I-M2 iyizinga elijwayelekile lensimbi enesivinini esikhulu kanye nezinto zokugaya ezikhiqizwa kakhulu emhlabeni. Ukwakheka kwayo — cishe i-tungsten engu-6%, i-molybdenum engu-5%, i-chromium engu-4%, kanye ne-vanadium engu-2% — kuyinika ubulukhuni obuhle, ukuqina okunengqondo, kanye nokusebenza okwanele kuzo zonke izinto ezivamile.
Umkhawulo we-M2 emsebenzini wensimbi engagqwali ubulukhuni bayo obushisayo, obubizwa nangokuthi ubulukhuni obubomvu. Lokhu kubhekisela ekhonweni lento yokugcina ubulukhuni bayo emazingeni okushisa aphezulu. I-M2 iqala ukulahlekelwa ubulukhuni ngendlela enenjongo cishe ku-550–600°C. Ekubhobozeni insimbi engagqwali — ikakhulukazi ezindaweni zokukhiqiza noma lapho ukupholisa kunganele — amazinga okushisa asezingeni eliphezulu adlula njalo leli banga.
Uma unqenqema luthamba, luyayeka ukusika bese luqala ukukhuhla. Ukungqubuzana kuyanda, ukushisa kuyanda kakhulu, ungqimba oluqiniswe umsebenzi luba nzima ukungena, futhi impilo yamathuluzi yehla kakhulu. Ukwehluleka akuhlali kuzuma njalo - kuvame ukubonakala njengokuzwa kokudla okunzima kancane kancane, ukwanda kokubhoboza eduze kokuphuma kwembobo, kanye nokuwohloka kobubanzi bembobo ngaphambi kokuba ingxenye ihluleke ekugcineni.
Insimbi yesivinini esiphezulu ye-M35 cobalt
I-M35 isebenzisa ukwakheka okuyisisekelo okufanayo ne-M2 kanye nokwengezwa kwe-cobalt engaba ngu-5%. I-Cobalt ayihlanganyeli ngqo ekusikeni — ayikhi ama-carbide noma ingeze ubulukhuni ekushiseni kwegumbi nganoma iyiphi indlela enenjongo. Indima yayo iwukuzinzisa i-matrix yensimbi emazingeni okushisa aphezulu, iphakamise iphuzu lapho ubulukhuni buqala khona ukuwohloka.
I-M35 igcina ubulukhuni obuwusizo kuze kufike cishe ku-630–650°C. Umehluko ongu-50–80°C uma uqhathaniswa ne-M2 ungase ubonakale uphansi, kodwa impilo yamathuluzi iyazwela kakhulu ekushiseni kuleli banga. Ezivivinyweni eziqhathaniswayo ezilawulwayo zensimbi engagqwali ye-austenitic, i-M35 ivame ukukhiqiza izimbobo eziningi kabili noma kathathu nge-bit kune-M2 ngaphansi kwezimo ezifanayo - futhi ngokuvamile kakhulu uma umsebenzi uhilela ukusika okuphazamisekile, amazinga okuphakelayo aguquguqukayo, noma ukupholisa okungaphelele.
Kubathengi, ukuqhathanisa kwezomnotho kulula: Ama-M35 bits abiza kakhulu ngeyunithi ngayinye, kodwa izindleko ngembobo ngayinye ebholiwe — ezibalelwa ezikhathini zokufaka esikhundleni, isikhathi sokungasebenzi komshini, kanye namazinga okwenqatshwa avela ekhwalithini embi yembobo — ngokuvamile ziphansi kunoma yimuphi umongo wokukhiqiza ohilela insimbi engagqwali.
Uma i-M2 isamukeleka
I-M2 ayifaneleki ngokuphelele ensimbi engagqwali. Ngaphansi kwezimo ezilandelayo, ingasebenza kahle:
•Isivinini sokusika esiphansi esine-coolant enkulu yezikhukhula
•Ukubhoboza okungavamile, okunomthamo ophansi lapho ingxenye inesikhathi sokupholisa phakathi kwemigodi
•Izinto ezincane (≤3mm) lapho i-drill ithintana khona ne-workpiece isikhathi esifushane
•Uma imikhawulo yezindleko yenza i-M35 ingasebenzi futhi ukubekezelela ikhwalithi yembobo kubanzi
Ekukhiqizweni okuphezulu, ezintweni ezijiyile, noma lapho ukunemba kobukhulu kubaluleke kakhulu, i-M35 iyindlela ethembeke kakhulu.
Isivinini sokusika kanye nesilinganiso sokudla
Ngisho noma kunezinto ezilungile zebhithi, amapharamitha okusika angalungile azobangela ukwehluleka kwangaphambi kwesikhathi. Izinguquko ezimbili okufanele zilawulwe isivinini sokusika (esivezwa njengesivinini sobuso ku-m/min, noma esiguqulwa sibe yi-RPM ngobubanzi obunikeziwe) kanye nesilinganiso sokudla (ukuthi i-drill ithuthuka ngokushesha kangakanani ngokujikeleza ngakunye).
Isivinini sokusika
Ngensimbi engagqwali, isivinini esinconywayo sobuso sama-bits okubhoboza e-HSS siphansi kakhulu kunesensimbi ethambile. Isiqondiso esijwayelekile sama-grade e-austenitic (304, 316):
•I-M2 HSS: Isivinini sobuso esingu-10–15 m/min
•I-M35 cobalt HSS: Isivinini sobuso esingu-15–25 m/min
Lokhu kuguqukela ku-RPM njengo: RPM = (isivinini sobuso × 1000) ÷ (π × ububanzi bokubhoboza ngo-mm). I-10mm M35 bit ngensimbi engagqwali engu-316, eqondiswe ku-20 m/min, ingasebenza cishe ku-637 RPM.
Ukugijima ngesivinini esikhulu kakhulu yiphutha elivame kakhulu lapho kubholwa insimbi engagqwali. Isivinini esikhulu sikhiqiza ukushisa ngokushesha kunokuba i-coolant ingakususa futhi ngokushesha kunokuba i-chip ingakuthwala. I-bit iyashisa kakhulu, ilahlekelwe ubulukhuni bomphetho, futhi yehluleke kusenesikhathi. Abasebenzi abajwayele ukubholwa insimbi engagqwali noma i-aluminium bavame ukusebenzisa insimbi engagqwali ngesivinini esiphezulu ngokuphindwe kabili noma kathathu.
Izinga lokuphakelayo
Izinga lokuphakelayo kumele libe phezulu ngokwanele ukuthi ingxenye iyasikwa njalo kunokuba ihlikihlwe. Indawo yokuphakelayo elula kakhulu ivumela ingxenye ukuthi ishelele phezu kwendawo eqiniswe umsebenzi ngaphandle kokungena - ikhiqize ukushisa ngaphandle kokususa izinto. Lena yimbangela eyinhloko yokuqina komsebenzi ngaphambi kwesikhathi emgodini.
Amanani okuphakelwa anconyiwe ensimbi engagqwali (ngokujikeleza ngakunye): 0.05–0.10 mm ngama-bits afinyelela ku-5mm ububanzi; 0.10–0.20 mm ngama-5–15mm; 0.20–0.35 mm ngaphezu kwe-15mm. Lawa amaphuzu okuqala — lungisa ngokusekelwe ekwakhekeni kwe-chip okubonwe, umsindo wokusika, kanye nokushisa emphethweni wokubhoboza.
Isibonakaliso esithembeke kakhulu sokuthi amapharamitha alungile yi-chip. I-chip encane, egoqekile ikhombisa ukusika okulungile. Ama-chip amade, anezintambo abonisa ukuthi ukudla kulula kakhulu. Ama-chip anombala oyimpuphu noma anombala ohlukile abonisa ukushisa okweqile.
Isibandisi kanye nokuthambisa
Isibandisi asikhethi uma kubholwa insimbi engagqwali. Indima yaso ikabili: ukususa ukushisa endaweni yokusika, kanye nokugcoba indawo ephakathi kwama-bit flutes nodonga lwembobo ukuze kuncishiswe ukushisa okubangelwa ukungqubuzana.
I-flood coolant (uwoyela oncibilikayo oxutshwe cishe ngo-8-10%) iyindlela ephumelela kakhulu ezindaweni zomshini namathuluzi. Emisebenzini yokubhoboza ngesandla noma yokucindezela i-drill ngaphandle kwe-flood coolant, uketshezi lokusika olufakwa ngqo entweni kanye nendawo yokungena ngaphambi nangesikhathi sokubhoboza lubalulekile. Ukubhoboza insimbi engagqwali kufanele kugwenywe kunoma yisiphi isimo lapho ikhwalithi yembobo noma impilo yamathuluzi ibalulekile.
Ukunikezwa kwe-coolant kumele kufinyelele endaweni yokusika. I-coolant yangaphandle ekhukhulayo ezindaweni zokusebenza ezijiyile (ngaphezu kuka-15–20mm) ingase ingapholisi ngokwanele i-bit tip — kulezi zimo, ukusebenzisa amathuluzi e-coolant noma ukuhoxiswa kwe-bit ngezikhathi ezithile ukuze kusulwe ama-chips futhi kuvumele ukupholisa kuyadingeka.
Ijiyometri kanye ne-engeli yephuzu
Ama-drill bits ajwayelekile angama-118° point point aklanyelwe ukusetshenziswa kwenhloso ejwayelekile. Ngensimbi engagqwali, i-geometry yama-split-point angu-135° isebenza kahle kakhulu ngezizathu ezimbili.
Okokuqala, iphuzu lokuqhekeka lisusa unqenqema lwe-chisel olukhona ezingcezwini ezijwayelekile zomhlabathi. Unqenqema lwe-chisel alunqumi — luyasunduza futhi luklwebhe, lukhiqize ukushisa ngaphandle kokususwa kwe-chip. Ukususa kusho ukuthi i-bit iqala ukusika ngokushesha lapho ithintana, kunciphisa ukuphakama kokushisa kokuqala kanye nokuthambekela kokuskeyitha.
Okwesibili, i-engeli ehlanganisiwe engajulile engu-135° isabalalisa amandla okusika ngokulinganayo kuzo zonke izindebe zokusika, inciphisa umthwalo ngendawo ngayinye futhi ithuthukise ukuqina kwezingxenye ezintweni eziqinile noma eziqinisa umsebenzi.
Eziningi zezinhlelo zokusebenza zokubhoboza insimbi engagqwali, i-M35 cobalt bit engu-135° split-point iyindlela efanele yokuqala.
Ukusetha kanye nokubamba umsebenzi
Ukuqina ekusethweni kubaluleke kakhulu ngensimbi engagqwali kunezinto ezithambile. Noma yikuphi ukudlidliza noma ukuphambuka phakathi kwe-bit kanye ne-workpiece kubangela ukuthi i-bit ikhuhle ngezikhathi ezithile kunokuba inqunywe njalo, okukhuthaza ukuqina komsebenzi kanye nokuqhekeka komphetho.
Izinto zokusebenza kufanele ziboshwe ngokuqinile, hhayi zibanjwe ngesandla. I-drill bit kufanele ihlolwe ukuthi ayisebenzi ngaphambi kokuqaliswa kokukhiqiza — ngisho namanani amancane okuqhubeka kokusetshenziswa asheshisa ukuguguleka ngokungalingani kuzo zonke izindebe ezisikiwe. Izandiso ze-bit ezimfushane zingcono kunezinde; ukufinyelela isikhathi eside kwandisa ukuphambuka ngaphansi komthwalo.
Ukuze kungene imbobo ngeshidi elincane elingagqwali, uphawu oluphakathi noma imbobo yokulinganisa kunciphisa ukuskeyitha ekuqaleni kokusikwa. Ukuze kuphume imbobo, ipuleti elisekelayo lensimbi ethambile noma i-aluminium eqoshiwe livimbela ukuqhekeka kanye nokuqhekeka kwezinto ezivame ukwenzeka njengoba i-bit iphuka.
Isifinyezo: iziguquguquko ezibalulekile zokulawula
•Izinto ze-bit: sebenzisa i-M35 cobalt HSS kunoma yikuphi ukubhoboza kwensimbi engagqwali. I-M2 iyisivumelwano.
•Isivinini sokusika: gijima kancane kunokuba ubungenza ngensimbi ethambile. Ukushisa kuyindlela eyinhloko yokwehluleka.
•Izinga lokuphakelwa: gcina ukudla okuhle ngaso sonke isikhathi. Ukuhlikihla okuncane kubangela ukuqina.
•Isibandisi: faka njalo endaweni yokusika. Ukubhoboza okomile kunciphisa kakhulu impilo yamathuluzi.
•I-geometry: iphuzu lokuhlukaniswa elingu-135° kungcono kunezinga elijwayelekile elingu-118° le-stainless.
•Ukuqina: qinisa ngokuqinile, nciphisa ukuphelelwa yisikhathi, gwema ukunwetshwa okude.
Ukubhoboza insimbi engagqwali akunzima ngokwemvelo — kuba nzima uma amathuluzi noma amapharamitha ekhethwa into ehlukile. Ngokucaciswa kwebhithi efanele, isivinini esifanele kanye nokuphakelwa, kanye nokusetshenziswa kokupholisa okuqhubekayo, kungalawuleka ngokuphelele esikalini sokukhiqiza.
Isikhathi sokuthunyelwe: Meyi-06-2026