Ingabe bukhona ubuhlobo phakathi kombala wokubhoboza nekhwalithi

Okokuqala: akunakwenzeka ukuhlukanisa ikhwalithi ye-drill bit kusuka kumbala nje. Abukho ubuhlobo obuqondile nobungenakugwemeka phakathi kombala nekhwalithi. Izingcezu zokubhola ezinemibala ehlukene zihluke kakhulu kubuchwepheshe bokucubungula. Yiqiniso, ungenza isinqumo esinzima ngombala, kodwa izingcezu zamanje zokubhoboza ezisezingeni eliphansi Zizocubungula imibala yazo ukuze kuzuzwe ukuvela kokubhola kwekhwalithi ephezulu.

Uyini umehluko phakathi kwemibala ehlukene yokubhoboza

Izingcezu zensimbi ezigaywe ngesivinini esiphezulu ezigcwele zivame ukuvela ezimhlophe. Kunjalo, izingcezu zokubhoboza ezigoqiwe zingaphinda zenziwe zibe mhlophe ngokugaya kahle indilinga yangaphandle. Isizathu sekhwalithi ephezulu ukuthi ngaphezu kwempahla ngokwayo, ukulawulwa kwekhwalithi ngesikhathi sokugaya nakho kuqinile, akukho ukushiswa endaweni yamathuluzi. I-Black drill bit ye-nitrided. Kuyindlela yamakhemikhali yokuthuthukisa ukuqina kwethuluzi ngokubeka ithuluzi eliqediwe enhlanganisela ye-ammonia nomhwamuko wamanzi bese liyibeka ngaphansi kwezinga lokushisa lika-540-560C °.

Njengamanje, ama-drill amaningi amnyama emakethe amnyama kuphela (ukuze amboze ukusha noma isikhumba esimnyama ebusweni bethuluzi), kodwa umphumela wangempela wokusetshenziswa awuzange uthuthukiswe ngempumelelo.

Kunezinqubo ezintathu zokukhiqiza ama-drill bits. Okumnyama kugoqekile, okubi kakhulu.Ezimhlophe ziyasikwa zipholishwe. Ngokungafani nokugoqa, okungakhiqizi i-oxidation yokushisa ephezulu, ukwakheka kokusanhlamvu kwensimbi akonakali, futhi kusetshenziselwa ukubhoboza ama-workpieces okuqina aphakeme kancane. I-tan drill bit ibizwa ngokuthi i-cobalt-containing drill embonini. Lona umthetho ofihliwe wale mboni yokubhoboza.

Amadayimane aqukethe i-cobalt ekuqaleni ayemhlophe futhi ekhiqizwa ngokugaya. Lapho kamuva esenziwe i-athomu, enziwa aba nsundu ngokuphuzi (ngokuvamile okubizwa ngokuthi inhlaka), okuyiwona asakazwa kahle kakhulu njengamanje. I-M35 (Co 5%) iphinde ibe nombala wegolide. Lolu hlobo lokubhoboza lubizwa ngokuthi i-titanium-plated drill, ehlukaniswe yaba i-plating yokuhlobisa kanye ne-industrial plating. I-decoration plating ayinawo nhlobo umphumela, yinhle futhi igolide. I-Industrial Plating yinhle kakhulu, ubulukhuni bungafinyelela ku-HRC78, ephakeme kunaleyo yamadayimane aqukethe i-cobalt (HRC54 °).

Njengoba umbala ungewona umbandela wokwahlulela izinga le-drill, uwuthenga kanjani umshini wokubhola?

Uma sibheka kokuhlangenwe nakho, ngokuvamile, okumhlophe ngokuvamile kwenziwa nge-high-speed steel drill bit, ikhwalithi kufanele ibe engcono kakhulu. Ezisagolide ziyi-titanium nitride egcwele futhi ngokuvamile zingcono kakhulu noma zikhohliswe kabi. Izinga lomnyama nalo alilingani. Ezinye zenziwe ngensimbi yensimbi ye-carbon empofu, okulula ukuyibamba futhi kulula ukugqwala, ngakho idinga ukuba mnyama.

Ngokuvamile, lapho uthenga i-drill, ungabona uphawu lokuhweba ku-drill shank kanye nophawu lokubekezelela ububanzi. Ilogo icacile, futhi ikhwalithi ye-laser noma ukugqwala kukagesi ayimbi kakhulu. Uma kuwuhlamvu oluqoshiwe, uma unqenqema lomlingiswa luqhuma, ikhwalithi ye-drill impofu, ngoba i-contour yohlamvu oluqhumile izobangela ukunemba kokubhoboza ukuthi kube ngaphansi kunalokho okudingekayo, kanye nomphetho womlingisi. icacile, inhle kakhulu futhi indawo eyicylindrical ye-drill shank Junctions iyikhwalithi enhle. Ngaphezu kwalokho, kuncike onqenqemeni lokusika lwethiphu yokubhoboza. Unqenqema lwe-full-grind drill luhle kakhulu, i-spiral surface ihlangabezana nezidingo, futhi izinga eliphansi liphansi ekhoneni elingemuva.