Uyawazi la magama: I-Helix angle, i-point angle, i-main cutting edge, iphrofayili yomtshingo? Uma kungenjalo, kufanele uqhubeke ufunda. Sizophendula imibuzo efana nale: Iyini i-secondary cutting edge? Iyini i-helix angle? Ithinta kanjani ukusetshenziswa kohlelo lokusebenza?
Kungani kubalulekile ukwazi lezi zinto: Izinto ezahlukene zibeka izidingo ezahlukene kuthuluzi. Ngenxa yalesi sizathu, ukukhethwa kwe-twist drill enesakhiwo esifanele kubaluleke kakhulu emphumeleni wokubhoboza.
Ake sibheke izici eziyisishiyagalombili eziyisisekelo ze-twist drill: I-point angle, i-main cutting edge, i-cut chisel edge, i-point cut kanye ne-point thinning, iphrofayili ye-flute, i-core, i-secondary cutting edge, kanye ne-helix angle.
Ukuze kufezwe ukusebenza okuhle kakhulu kokusika ezintweni ezahlukene, zonke izici eziyisishiyagalombili kumele zifaniswe.
Ukuze sibonise lokhu, siqhathanisa lezi zindlela ezintathu ezilandelayo zokuzivocavoca ezisontekile:
I-engeli yephoyinti
I-engeli yephuzu itholakala ekhanda le-drill ejijekile. I-engeli ilinganiswa phakathi kwemiphetho emibili yokusika eyinhloko phezulu. I-engeli yephuzu iyadingeka ukuze i-drill ejijekile igxile ezintweni.
Uma i-engeli yephuzu incane, kulula ukufaka phakathi kwezinto. Lokhu kunciphisa nengozi yokushelela ezindaweni ezigobile.
Uma i-engeli yephuzu inkulu, isikhathi sokuthinta sifushane. Kodwa-ke, kudingeka ingcindezi ephezulu yokuthinta futhi ukugxilisa phakathi kwezinto zokwakha kuba nzima.
Ngokwesimo sejiyometri, i-engeli encane yephuzu isho imiphetho emide yokusika eyinhloko, kanti i-engeli enkulu yephuzu isho imiphetho emifushane yokusika eyinhloko.
Imiphetho emikhulu yokusika
Imiphetho emikhulu yokusika ithatha inqubo yokubhoboza yangempela. Imiphetho emide yokusika inokusebenza okuphezulu kokusika uma kuqhathaniswa nemiphetho yokusika emifushane, noma ngabe umehluko mncane kakhulu.
I-drill egobile ihlala inemiphetho emibili emikhulu yokusika exhunywe ngomphetho we-chisel osikiwe.
Sika unqenqema lwesitsha
Umphetho we-chisel osikiwe utholakala phakathi kwesihloko sokubhoboza futhi awunawo umphumela wokusika. Kodwa-ke, ubalulekile ekwakhiweni kwe-twist drill, njengoba uxhumanisa imiphetho emibili emikhulu yokusika.
Unqenqema lwesitshezi olusikiwe lunesibopho sokungena kwezinto futhi lunengcindezi kanye nokungqubuzana kwezinto. Lezi zakhiwo, ezingafaneleki enkambisweni yokubhoboza, ziholela ekukhiqizweni kokushisa okwandisiwe kanye nokusetshenziswa kwamandla okwandisiwe.
Kodwa-ke, lezi zakhiwo zingancishiswa yilokho okubizwa ngokuthi “ukuncipha”.
Ukusikwa kwamaphuzu kanye nokuncipha kwamaphuzu
Ukuncipha kwephuzu kunciphisa umphetho we-chisel osikiwe phezulu kwe-drill egobile. Ukuncipha kuholela ekunciphiseni okukhulu kwamandla okungqubuzana ezintweni zokwakha futhi ngaleyo ndlela kunciphise amandla okudla adingekayo.
Lokhu kusho ukuthi ukunciphisa indwangu kuyisici esibalulekile sokugxila phakathi kwezinto. Kuthuthukisa ukuthepha.
Ukuncipha kwamaphuzu ahlukahlukene kulinganiselwe ezimeni ze-DIN 1412. Izimo ezivame kakhulu yiphuzu eliyindilinga (isimo N) kanye nephuzu elihlukanisiwe (isimo C).
Iphrofayili yomtshingo (iphrofayili yomsele)
Ngenxa yomsebenzi wayo njengohlelo lwesiteshi, iphrofayili yombhobho ikhuthaza ukumuncwa nokususwa kwama-chip.
Uma iphrofayili yomsele ibanzi, kulapho ukumuncwa nokususwa kwe-chip kungcono khona.
Ukususwa kabi kwama-chip kusho ukukhula kokushisa okuphezulu, okungaholela ekufakweni kwe-annealing futhi ekugcineni kuphuke i-twist drill.
Amaphrofayili emisele ebanzi ayizicaba, amaphrofayili emincane yemisele ajulile. Ukujula kwephrofayili yemisele kunquma ukujiya kwengqikithi yokubhoboza. Amaphrofayili emisele eyisicaba avumela ububanzi obukhulu (obujiyile) bengqikithi. Amaphrofayili emisele ejulile avumela ububanzi obuncane (obuncane) bengqikithi.
Ingqikithi
Ubukhulu obuyinhloko buyindlela yokunquma ukuqina kwe-twist drill.
Ama-drill asontekile anobubanzi obukhulu (obujiyile) obuqinile anokuqina okuphezulu ngakho-ke afanelekela ama-torque aphezulu nezinto eziqinile. Afaneleka kakhulu futhi ukusetshenziswa kuma-drill esandla njengoba emelana kakhulu nokudlidliza namandla aseceleni.
Ukuze kube lula ukususwa kwama-chips emseleni, ukujiya kwengaphakathi kuyanda kusukela encamini yokubhoboza kuya emgodleni.
Ama-chamfer aqondisayo kanye nemiphetho yokusika yesibili
Ama-chamfer amabili aqondisayo atholakala kuma-flute. Ama-chamfer acijile asebenza futhi ezindaweni ezisemaceleni ze-borehole futhi asekela ukuqondiswa kwe-twist drill emgodini obholiwe. Ikhwalithi yezindonga ze-borehole nayo incike ezimpahleni zama-chamfer aqondisayo.
Unqenqema lwesibili olusezingeni lokuqala lwakha ushintsho oluvela kuma-chamfer aqondisayo kuya kuphrofayili ye-groove. Lukhulula futhi lunqume ama-chips anamathele kulokho okubhaliwe.
Ubude be-chamfers eziqondisayo kanye nemiphetho yokusika yesibili kuncike kakhulu ekhoneni le-helix.
I-engeli ye-Helix (i-engeli ejikelezayo)
Isici esibalulekile se-twist drill yi-helix angle (i-spiral angle). Inquma inqubo yokwakheka kwe-chip.
Ama-engeli amakhulu e-helix asusa ngempumelelo izinto ezithambile nezinama-chip amade. Ama-engeli amancane e-helix, ngakolunye uhlangothi, asetshenziselwa izinto eziqinile nezinama-chip amafushane.
Ama-drill ajikajikayo ane-engeli encane kakhulu ye-helix (10° – 19°) anokujikeleza okude. Ngokubuyisela, i-drill ejikajikayo ene-engeli enkulu ye-helix (27° – 45°) inokujikeleza okufushane (okufushane). Ama-drill ajikajikayo ane-spiral evamile ane-engeli ye-helix engu-19° – 40°.
Imisebenzi yezici kuhlelo lokusebenza
Uma ubheka kuqala, indaba ye-twist drills ibonakala iyinkimbinkimbi impela. Yebo, kunezingxenye eziningi nezici ezihlukanisa i-twist drill. Kodwa-ke, izici eziningi ziyaxhomekeka.
Ukuze uthole i-drill ejijekile efanele, ungazijwayeza isicelo sakho esinyathelweni sokuqala. Incwadi ye-DIN yama-drill nama-countersink ichaza, ngaphansi kwe-DIN 1836, ukuhlukaniswa kwamaqembu esicelo abe izinhlobo ezintathu u-N, u-H, no-W:
Kulezi zinsuku ngeke nje uthole lezi zinhlobo ezintathu u-N, u-H, no-W emakethe, ngoba ngokuhamba kwesikhathi, lezi zinhlobo ziye zahlelwa ngendlela ehlukile ukuze kuthuthukiswe ama-twist drill ezinhlelo ezikhethekile. Ngakho-ke, kuye kwakhiwa amafomu ahlanganisiwe anezinhlelo zokuqamba amagama ezingalingani encwadini ye-DIN. Ku-MSK ngeke uthole uhlobo u-N kuphela kodwa nezinhlobo i-UNI, i-UTL noma i-VA.
Isiphetho kanye nesifinyezo
Manje usuyazi ukuthi yiziphi izici ze-twist drill ezithonya inqubo yokubhoboza. Ithebula elilandelayo likunikeza umbono jikelele wezici ezibaluleke kakhulu zemisebenzi ethile.
| Umsebenzi | Izici |
|---|---|
| Ukusika ukusebenza | Imiphetho emikhulu yokusika Imiphetho eyinhloko yokusika ithatha inqubo yokubhoboza yangempela. |
| Impilo yesevisi | Iphrofayili yomtshingo (iphrofayili yomsele) Iphrofayili yombhobho osetshenziswa njengohlelo lwesiteshi inesibopho sokumuncwa nokususwa kwama-chip futhi, ngenxa yalokho, iyisici esibalulekile sempilo yenkonzo ye-twist drill. |
| Isicelo | I-engeli yephoyinti kanye ne-engeli ye-Helix (i-engeli ejikelezayo) I-engeli yephuzu kanye ne-engeli ye-helix yizinto ezibalulekile zokusetshenziswa kwezinto eziqinile noma ezithambile. |
| Ukubeka phakathi nendawo | Ukusikwa kwamaphuzu kanye nokuncipha kwamaphuzu Ukusikwa kwamaphuzu kanye nokuncipha kwamaphuzu kuyizinto ezibalulekile zokugxila ezintweni. Ngokunciphisa umphetho we-chisel osikiwe uyancishiswa ngangokunokwenzeka. |
| Ukunemba kokugxila | Ama-chamfer aqondisayo kanye nemiphetho yokusika yesibili Ama-chamfer aqondisayo kanye nemiphetho yokusika yesibili kuthinta ukunemba kokugxila kwe-twist drill kanye nekhwalithi yomgodi wokubhoboza. |
| Ukuzinza | Ingqikithi Ubukhulu be-core buyindlela eqondile yokulinganisa ukuzinza kwe-twist drill. |
Ngokuyisisekelo, unganquma uhlelo lwakho lokusebenza kanye nezinto ofuna ukuzisebenzisa.
Bheka ukuthi yiziphi izimbobo zokubhoboza eziphindwayo ezinikezwayo bese uqhathanisa izici nemisebenzi oyidingayo ukuze izinto zakho zibhobozwe.
Isikhathi sokuthunyelwe: Agasti-12-2022
