Izici eziyi-8 ze-twist drill nemisebenzi yayo

Uyawazi la magama: I-Helix angle, i-point angle, main cutting edge, iphrofayili yomtshingo?Uma kungenjalo, kufanele uqhubeke ufunda.Sizophendula imibuzo enjengokuthi: Iyini i-second edge yokusika?Iyini i-engeli ye-helix?Zithinta kanjani ukusetshenziswa kuhlelo lokusebenza?

Kungani kubalulekile ukwazi lezi zinto: Izinsiza ezahlukene zibeka izidingo ezahlukene ethuluzini.Ngenxa yalesi sizathu, ukukhethwa kwe-twist drill enesakhiwo esifanele kubaluleke kakhulu kumphumela wokumba.

Ake sibheke izici eziyisishiyagalombili eziyisisekelo zomshini wokusonta: I-engeli yephoyinti, unqenqema lokusika oluyinhloko, unqenqema lokusika lweshiseli, ukusika kwephoyinti nokuncishiswa kwephoyinti, iphrofayili yomtshingo, umgogodla, unqenqema lokusika lwesibili, kanye ne-helix angle.

Ukuze kuzuzwe ukusebenza okuhle kakhulu kokusika ezintweni ezihlukene, zonke izici eziyisishiyagalombili kufanele zifaniswe komunye nomunye.

Ukubonisa lokhu, siqhathanisa ama-twist drills amathathu alandelayo nomunye nomunye:

• I-twist drill DIN 338 , HSS-E
• Ama-twist drills DIN 338 , HSSE-Co M35
• Twist drill DIN 338 , HSS 4341

I-engeli yephoyinti

I-engeli yephoyinti itholakala ekhanda le-twist drill.I-engeli ikalwa phakathi kwamaphethelo amabili okusika ayinhloko phezulu.I-engeli yephoyinti iyadingeka ukuze ubeke phakathi i-twist drill kundaba.

Uma i-engeli yephoyinti iba yincane, kuba lula ukugxilisa indawo endaweni.Lokhu futhi kunciphisa ingozi yokushelela ezindaweni ezigobile.

Uma i-engeli yephoyinti inkulu, isikhathi sokuthepha siba sifushane.Kodwa-ke, ingcindezi yokuxhumana ephakeme iyadingeka futhi ukugxilisa indawo kundaba kunzima.

I-geometrically conditioned, i-engeli encane yephoyinti isho imiphetho eyinhloko emide, kuyilapho i-engeli enkulu isho amaphethelo amakhulu amafushane.

Imiphetho yokusika eyinhloko

Imiphetho eyinhloko yokusika ithatha inqubo yangempela yokumba.Amaphethelo amade anokusebenza kokusika okuphezulu uma kuqhathaniswa namaphethelo okusika amafushane, noma ngabe umehluko mncane kakhulu.

I-twist drill ihlale inemiphetho emibili yokusika exhunywe ngonqenqema olusikiwe lweshizolo.

Sika unqenqema lweshizolo

I-cut chisel edge itholakala maphakathi nethiphu yokubhoboza futhi ayinawo umphumela wokusika.Kodwa-ke, kubalulekile ekwakhiweni kwe-twist drill, njengoba ixhuma amaphethelo amabili amakhulu okusika.

Unqenqema lweshizolo olusikiwe lunesibopho sokungena kokubalulekile futhi lwenza ingcindezi nokungqubuzana kokubalulekile.Lezi zakhiwo, ezingalungile ngenqubo yokumba, ziphumela ekwandeni kokukhiqizwa kokushisa kanye nokwanda kokusetshenziswa kwamandla.

Kodwa-ke, lezi zakhiwo zingancishiswa yilokho okubizwa ngokuthi "ukunciphisa".

Amaphoyinti okusikeka nokuncishiswa kwamaphuzu

Ukunciphisa iphuzu kunciphisa unqenqema lweshiseli elisikiwe phezulu kwe-twist drill.Ukuncipha kuphumela ekuncipheni okukhulu kwamandla okungqubuzana kwento futhi ngaleyo ndlela kuncipha amandla okuphakelayo adingekayo.

Lokhu kusho ukuthi ukuncipha kuyisici esinqumayo sokugxilisa indawo kundaba.Ithuthukisa ukuthepha.

Amaphoyinti ahlukene ama-thinnings alinganiswa ngomumo we-DIN 1412.Izimo ezivame kakhulu yi-helical point (shape N) kanye nephoyinti lokuhlukaniswa (umumo C).

Iphrofayili yomtshingo (iphrofayili ye-groove)

Ngenxa yokusebenza kwayo njengohlelo lwesiteshi, iphrofayili yomtshingo ikhuthaza ukumuncwa nokususwa kwe-chip.

Uma iphrofayili ye-groove iba banzi, kungcono ukumuncwa nokususwa kwe-chip.

Ukukhishwa okungalungile kwe-chip kusho ukuthuthukiswa kokushisa okuphezulu, okungase kuholele ekunqandeni futhi ekugcineni kuphuke i-twist drill.

Amaphrofayili e-groove abanzi ayisicaba, amaphrofayili emisele emincane ajulile.Ukujula kwephrofayili ye-groove kunquma ukujiya kwe-drill core.Amaphrofayili e-flat groove avumela ububanzi obukhulu (obukhulu) obuyisisekelo.Amaphrofayili e-groove ajulile avumela amadayamitha amaphakathi amancane (amancane).

Ingqikithi

Ugqinsi oluwumgogodla yisilinganiso esinqumayo sokuzinza kwe-twist drill.

Ama-twist drill anobubanzi obukhulu (obukhulu) obuphakathi anokuqina okuphezulu ngakho-ke afanele ama-torque aphezulu kanye nezinto eziqinile.Zibuye zifaneleke kahle kakhulu ukuthi zisetshenziswe ekuzibhobhozelweni kwezandla njengoba zikwazi ukumelana nokudlidliza namandla asemaceleni.

Ukuze kube lula ukukhishwa kwama-chips ku-groove, ubukhulu bomgogodla buyanda kusukela kuphuzu lokubhoboza kuya ku-shank.

Ama-chamfers aqondisayo kanye nemiphetho yokusika yesibili

Amachamfer amabili aqondisayo atholakala emitshingoni.Ama-chamfer aphansi acijile asebenza ngaphezu kwalokho ezindaweni eziseceleni ze-borehole futhi asekela isiqondiso se-twist drill emgodini obhobhile.Izinga lezindonga ze-borehole libuye lincike ezicini ze-guide chamfers.

Unqenqema lwesibili lwakha uguquko ukusuka kuma-chamfers omhlahlandlela ukuya kuphrofayela ye-groove.Ikhulula futhi isike ama-chips abambelele kokubalulekile.

Ubude bama-chamfers omhlahlandlela kanye nemiphetho yokusika yesibili kuncike kakhulu ku-angle ye-helix.

I-engeli ye-Helix (i-angle ejikelezayo)

Isici esibalulekile se-twist drill yi-engeli ye-helix (i-angle e-spiral).Inquma inqubo yokwakhiwa kwe-chip.

Ama-engeli amakhulu we-helix ahlinzeka ngokususa okusebenzayo kwezinto ezithambile, eziqopha isikhathi eside.Ama-engeli amancane we-helix, ngakolunye uhlangothi, asetshenziselwa izinto eziqinile, ezifinyeziwe.

Ama-twist drill ane-engeli ye-helix encane kakhulu (10° – 19°) anomjikelezo omude.Ngokubuyisela, i-twist drill swith i-engeli enkulu ye-helix (27° – 45°) ibe nokuzungeza kwerammed (okufushane).Ama-twist drill ane-spiral evamile ane-engeli ye-helix engu-19° – 40°.

Imisebenzi yezici kuhlelo lokusebenza

Uma uthi nhlá, isihloko se-twist drills sibonakala siyinkimbinkimbi kakhulu.Yebo, kunezingxenye nezici eziningi ezihlukanisa i-twist drill.Nokho, izici eziningi zincike kwezinye.

Ukuze uthole i-twist drill efanele, ungaziqondisa kuhlelo lwakho lokusebenza esinyathelweni sokuqala.Imanuwali ye-DIN yokubhoboza nosinki ichaza, ngaphansi kwe-DIN 1836, ukuhlukaniswa kwamaqembu ezicelo abe yizinhlobo ezintathu uN, H, kanye no-W:

Namuhla ngeke nje uthole lezi zinhlobo ezintathu ze-N, H, kanye no-W emakethe, ngoba ngokuhamba kwesikhathi, izinhlobo zihlelwe ngendlela ehlukile ukuze kuthuthukiswe ama-twist drill ezinhlelo zokusebenza ezikhethekile.Ngakho-ke, amafomu ayingxube akhiwe amasistimu awo okuqamba amagama angalinganisi kumanuwali we-DIN.Kwa-MSK ngeke uthole uhlobo N kuphela kodwa nezinhlobo ezithi UNI, UTL noma VA.

Isiphetho nesifinyezo

Manje uyazi ukuthi yiziphi izici ze-twist drill ezithonya inqubo yokumba.Ithebula elilandelayo likunikeza isifinyezo sezici ezibaluleke kakhulu zemisebenzi ethile.

Ngokuyisisekelo, unganquma uhlelo lwakho lokusebenza kanye nezinto ofuna ukuzifaka kuzo.

Bheka ukuthi yimaphi ama-twist drill ahlinzekwayo bese uqhathanisa izici ezifanele nemisebenzi oyidingayo ukuze impahla yakho ibhojwe.