Ukubhola kuyingxenye ebalulekile ye- PCB ubuchwepheshe bokucubungula intaba, nokukhethwa kwebhola lokuprakthiza kubaluleke kakhulu. I-carbide encane eshiselwe, eyaziwa ngamandla ayo aphezulu wokuxhuma phakathi kwethiphu yokubhoboza nomzimba wokusika, ingacubungula izimbobo ngobukhulu obuhle bendawo, ukubekezelelana okuncane kokuvuleka nokunemba kwesikhundla esiphakeme. Lapho isikulufa sokukhiya siqinisiwe, umshini wokuprakthiza umqhele ungafinyelela okuphakelayo okuphezulu njengensimbi yokushisela.

Abantu abaningi bakholelwa ngephutha ukuthi ukubhola kumele kwenziwe ngamazinga okuphakelwa okuphansi kanye nejubane eliphansi. Lokhu bekukade kuyiqiniso, kepha ama-carbide bits anamuhla ayindaba ehlukile. Eqinisweni, ukukhetha okulungile kungakhuphula kakhulu umkhiqizo futhi kunciphise izindleko emgodini ngamunye ebhodini.

Kunezinhlobo ezine eziyisisekelo zamabhilidi wokubhola aneziphetho zokusika ze-carbide ezitholakala kumsebenzisi wokugcina: i-carbide eqinile, okufakwa okungaqondakali, amathiphu we-carbide ashisayo, kanye namathiphu we-carbide drill. Ngayinye inezinzuzo zayo esicelweni esithile.

Izinti zokuqala eziqinile ze-carbide zisetshenziswa ezikhungweni zemishini zanamuhla. Kukhiqizwe kusuka ku-carbide ocolekile futhi kufakwe i-TIAlN ngempilo yamathuluzi, lezi zingcezu zokuzinakekela zinikeza ukulawula okuhle kwe-chip nokususwa ezintweni eziningi zomsebenzi ngenxa yemiphetho yazo eklanywe ngokukhethekile. I-geometry yokuzicabangela kanye nokunemba kwamabhithi we-carbide ahlanganisiwe aqinisekisa ukuthi izimbobo ezisezingeni eliphakeme ziyatholakala ngaphandle kokuphinda kwenziwe eminye imishini.

Ama-blade bits akhombekayo amboza ububanzi obuningi bobubanzi ekujuleni kusuka ku-2XD kuye ku-5XD. Zingasetshenziswa kuzo zombili izinhlelo zokusebenza ezijikelezayo nezikwelethi. Lawa ma-bits asebenzisa i-Angle ye-geometric ye-geometric ezintweni eziningi zokwenziwa komsebenzi ukunciphisa amandla okusika futhi unikeze ukulawula okuhle kwe-chip.

I-welding drill bit yenza imingxuma ngokuqedwa okuphezulu kwendawo, ukunemba okuphezulu kwe-dimensional kanye nokunemba kwesimo esihle ngaphandle kokuphothula okuqhubekayo. Ngokupholisa ngemigodi, amathiphu we-bit ashiselwe angasetshenziswa ezikhungweni zemishini, i-CNC lathes, noma amanye amathuluzi omshini anokuqina okwanele nejubane lokujikeleza.

Ifomu lokugcina elihlanganisa umzimba wokusika wensimbi nephoyinti eliqinile elisuswayo elibizwa ngokuthi umqhele. I-drill ihlinzeka ngokunemba okufana ne-welded bit ngenkathi kufinyelelwa ekukhiqizeni okuphezulu ngezindleko eziphansi zemishini. Le ntwana yesizukulwane esilandelayo enomqhele we-carbide inikeza ukukhushulwa okuqondile nobukhulu be-engeli yejiyometri eqinisekisa ukucwilisa okuphezulu.

Cabanga ngokucophelela ukubekezelelana nokuqina kwethuluzi lomshini

Ifektri kufanele ikhethe kancane ngokuya ngokubekezelelana okuthile kumshini. Izimbobo ezincane zobubanzi ngokuvamile zinokubekezelelana okuqinile. Ngakho-ke, abakhiqizi bezinto ezincane bahlukanisa izingcezu ngokukhomba ukuvula okuncane kanye nokubekezelelana okuphezulu. Kuwo wonke amafomu wokubhola, i-carbide bit eqinile inokubekezelelana okuqinile. Lokhu kubenza babe ukukhetha okuhle kakhulu kokubhola izimbobo ezinokubekezelela okuqinile kakhulu. Ifektri ingakwazi ukubhola nge-10mm ubukhulu carbide bit ngokubekezelelana kusuka ku-0 kuye + 0.03mm.

Ngakolunye uhlangothi, izingcezwana ezishiselwe noma izingcezu eziphakeme ezinomqhele we-carbide ongashintshwa zingabhalwa ekubekezelelaneni kusuka ku-0 kuye + 0.07mm. Lezi zingcezu zivame ukukhetha okuhle kwezinqubo zokukhiqiza zemishini.I-blade ekhombekayo yinkomba yomsebenzi onzima embonini. Ngenkathi izindleko zabo zangaphambili zivame ukuba ngaphansi kunezinye izingcezu, zibuye zibe nokubekezelelana okukhulu kakhulu, kusuka ku-0 kuye ku- + 0.3mm ngokuya ngesilinganiso sokujula kuya embobeni. Lokhu kusho ukuthi umsebenzisi wokugcina angasebenzisa i-blade engakhombeki lapho ukubekezelelana komgodi kuphezulu, ngaphandle kwalokho kufanele bakulungele ukuqeda umgodi ngomsiki oyisidina. Kanye nokubekezelelana kwemigodi, ifektri idinga ukubheka ukuzinza kwethuluzi lomshini kunqubo yokukhetha. Ngoba ukuzinza ukuqinisekisa ithuluzi lokuphila nokumba ngokunemba. Ifektri izoqinisekisa isimo semishini yokwakha uthi lokuphotha, okokulungisa nezinye izinsimbi. Kufanele futhi bacabangele ukuzinza okungokwemvelo kwebhithi. Isibonelo, ama-monolithic carbide bits ahlinzeka ngokuqina okuphelele, okuvumela ukunemba okuphezulu.

Ngakolunye uhlangothi, ama-blade blade akhombekayo athambekele ekuphambukeni. Lezi zingcezu zinamabhande amabili – inkaba yangaphakathi maphakathi kanye nekhaba eliphumela ngaphandle lisuka ngaphakathi lize liye emaphethelweni – futhi ekuqaleni yinye kuphela elibamba iqhaza ekusikeni. Lokhu kudala isimo esingazinzile esidala ukuthi umzimba omncane uphambuke. Futhi kukhulu ukuphambuka okuncane kwenyanga. Ngakho-ke, lapho usebenzisa ama-4XD kanye namabhithi ama-blade akhonjekayo, isitshalo kufanele sicabangele ukwehlisa okuphakelayo kwe-mm yokuqala bese sikhulisa okuphakelayo kube kokujwayelekile. Ingxenywana eshiselwe necezu lomqhele eliguqukayo zakhiwe njengemiphetho yokusika emaceleni emibili eyakha i-engeli yejiyomethri yokuzenzela. Lo mklamo wokusika ozinzile uvumela kancane ukungena ku-workpiece ngejubane eligcwele. Okuwukuphela kokuhlukile kulapho i-bit ingacacanga ebusweni bokwenziwa ngomshini. Kunconywa ukunciphisa okuphakelayo ngo-30% kuya ku-50% ngesikhathi sokusikwa nokusikwa.

Umzimba omncane wensimbi uvumela ukuphambuka okuncane, okukuvumela ukuthi kusetshenziswe ngempumelelo kuma-lathes. I-carbide eqinile enokuqina okuhle ingahle yephulwe kalula, ikakhulukazi lapho okokusebenza kungagxili kahle. Ungazibi ama-chips amafektri amaningi anezinkinga ngokususwa kwe-chip. Eqinisweni, ukususwa okungekuhle kwe-chip kuyinkinga ejwayelekile kakhulu ekubhoneni, ikakhulukazi lapho kusetshenzwa insimbi emnene. Futhi akunandaba ukuthi usebenzisa yiphi i-drill bit. Amafektri ajwayele ukusebenzisa ukupholisa kwangaphandle ukuxazulula le nkinga, kepha kuphela ekujuleni komgodi ngaphansi kuka-1XD nangamapharamitha okusika ancishisiwe. Ngaphandle kwalokho, kufanele basebenzise isipholisi esifanele ukufanisa ukugeleza kwengcindezi yokuvula. Kumathuluzi emishini angenakho ukupholisa kwesikhungo sokuphotha, ifektri kufanele isebenzise okokupholisa kudivayisi. Khumbula, lapho umgodi ujula, kuba nzima kakhulu ukukhipha ama-chips futhi kudingeka ingcindezi yokupholisa. Njalo hlola izinga lokugeleza lokupholisa eliphansi elinconywayo lomkhiqizi. Ngamazinga okugeleza okuphansi, ukudla okungancishisiwe kungadingeka. Ukuhlola umjikelezo wempilo kubiza umkhiqizo noma izindleko emgodini ngamunye kungenye yezindlela ezinkulu ezithinta ukubhola namuhla. Lokhu kusho ukuthi abakhiqizi bezinto ezincane kufanele bathole izindlela zokuhlanganisa izinqubo ezithile futhi bathuthukise izingcezwana ezingahlalisa amazinga aphezulu okuphakelayo nemishini esheshayo.

Amabhithi akamuva anezeluleko ze-carbide eziguquguqukayo ezinikeza umnotho ophakeme. Esikhundleni sokufaka wonke umzimba omncane, umsebenzisi wokugcina uthenga kuphela ikhanda lekhabide elibiza ngokufana nokubuyisa kabusha i-carbide eshiselwe noma eqinile. Le miqhele ishintshwa kalula futhi inembile, ivumela ifektri ukuthi isebenzise imiqhele eminingi emzimbeni owodwa omncane ukubhoboza izimbobo ezinobukhulu obuhlukahlukene. Lolu hlelo lwe-modular drilling lwehlisa izindleko zokwenza izinto ngamabhithi ngobubanzi kusuka ku-12mm kuye ku-20mm.

Ngaphezu kwalokho, iqeda izindleko zokuba nesipele kancane lapho i-welded bit noma i-carbide bit encane iphinde ibuye. Ifektri kufanele futhi icabangele inani eliphelele lamathuluzi lapho kubuyekezwa izindleko ngembobo ngayinye. Imvamisa, intwana eyodwa ye-carbide ingabuyiswa izikhathi ezingama-7 kuye kwayi-10 efektri, kuyilapho ingcosana eshiselwe ingabuyiselwa izikhathi ezi-3 kuye kwezi-4. Ngakolunye uhlangothi, ama-Crown drill bits anomzimba wokusika wensimbi ongashintsha okungenani imiqhele engama-20 kuye kwangama-30 ngenkathi kusetshenzwa insimbi.

Kukhona nombuzo wokukhiqiza. Izinsimbi ze-carbide ezishiselwe noma eziqinile kufanele zizungezwe kabusha; Ngakho-ke, izimboni zivame ukwehlisa ijubane ukugwema ama-chips anamathelayo. Kodwa-ke, intambo engashintshwa ayidingi ukuphinda izungeze, ngakho-ke ifektri ingacubungula ngokudla okwanele nangejubane ngaphandle kokukhathazeka nge-cemented carbide chip.