Ngamafuphi ukukhiqiza, kunzima ukusho ubuchwepheshe obungcono kune-CNC machining.Ihlinzeka ngenhlanganisela ehlanganiswe kahle yezinzuzo ezihlanganisa amandla okuphuma aphezulu, ukunemba nokuphindaphinda, ukukhethwa okubanzi kwezinto zokwakha, kanye nokusebenziseka kalula.Nakuba cishe noma iliphi ithuluzi lomshini lingalawulwa ngokwezinombolo, ukwenza imishini yokulawula izinombolo zekhompuyutha ngokuvamile kubhekisela ekugayweni nasekujikeni kwama-eksisi amaningi.
Ukuze uthole okwengeziwe mayelana nokuthi i-CNC machining isetshenziswa kanjani ekwenzeni imishini yangokwezifiso, ukukhiqizwa kwevolumu ephansi kanye ne-prototyping, i-engineering.com ikhulume ne-Wayken Rapid Manufacturing, insizakalo yokukhiqiza ye-prototype esekwe e-Shenzhen mayelana nezinto, ubuchwepheshe, izinhlelo zokusebenza nokusebenza kwamathuluzi omshini we-CNC. .
Uma kukhulunywa ngezinto zokwakha, uma iza ngeshidi, ipuleti noma isitokwe sebha, maningi amathuba okuthi ungayifaka ngomshini.Phakathi kwamakhulu ama-alloys ensimbi nama-polymers epulasitiki angenziwa ngomshini, amapulasitiki e-aluminium kanye nobunjiniyela avame kakhulu kuma-prototype machining.Izingxenye zepulasitiki eziklanyelwe ukubunjwa ekukhiqizeni ngobuningi zivame umshini esigabeni se-prototype ukuze kugwenywe izindleko eziphezulu kanye nesikhathi sokuhola sokwenza isikhunta.
Ukufinyelela kunhlobonhlobo yezinto ezisetshenziswayo kubaluleke kakhulu uma kwenziwa i-prototyping.Ngenxa yokuthi izinto ezihlukene zinezindleko ezihlukene kanye nezakhiwo ezahlukene zemishini namakhemikhali, kungase kube ngcono ukusika i-prototype ngempahla eshibhile kunaleyo ehlelelwe umkhiqizo wokugcina, noma into ehlukile ingasiza ukukhulisa amandla, ukuqina noma isisindo sengxenye. maqondana nomklamo wayo.Kwezinye izimo, enye into esetshenziswayo ye-prototype ingase ivumele inqubo ethile yokuqedela noma yenziwe iqine kakhulu kunengxenye yokukhiqiza ukuze kube lula ukuhlola.
Okuphambene nakho kuyenzeka, ngezinto ezingabizi kakhulu zempahla ezithatha indawo yama-resin onjiniyela kanye nama-alloys ensimbi asebenza kahle kakhulu lapho i-prototype isetshenziselwa ukusetshenziswa okulula okufana nokuhlola okufanelekile noma ukwakhiwa kwe-mockup.
Nakuba zenzelwe ukusebenza ngensimbi, amapulasitiki angenziwa ngempumelelo ngolwazi nemishini efanele.Kokubili ama-thermoplastics kanye nama-thermosets ayasebenziseka futhi abiza kakhulu uma kuqhathaniswa nokubunjwa komjovo wesikhathi esifushane wezingxenye ze-prototype.
Uma kuqhathaniswa nezinsimbi, ama-thermoplastic amaningi afana ne-PE, PP noma i-PS azoncibilika noma ashise uma emshinini wokuphakelayo kanye nesivinini esivamile ekusebenzeni kwensimbi.Izivinini eziphakeme zokusika kanye namazinga okuphakela aphansi ajwayelekile, futhi izinhlaka zamathuluzi okusika njenge-rake angle zibalulekile.Ukulawula ukushisa ekusikeni kubalulekile, kodwa ngokungafani nezinsimbi zokupholisa ngokuvamile azifafazwa kusikwe ukuze kuphole.Umoya ocindezelwe ungase usetshenziselwe ukususa ama-chips.
I-Thermoplastics, ikakhulukazi amamaki empahla engagcwalisiwe, i-elastically deform njengoba kusetshenziswa amandla okusika, okwenza kube nzima ukuzuza ukunemba okuphezulu nokugcina ukubekezelelana okuseduze, ikakhulukazi izici ezinhle nemininingwane.Ukukhanyisa kwezimoto namalensi kunzima kakhulu.
Ngaphezu kweminyaka engama-20 yesipiliyoni sokusebenza kwepulasitiki ye-CNC, u-Wayken ugxile kakhulu kuma-optical prototypes njengamalensi ezimoto, iziqondiso ezikhanyayo nezibonisi.Lapho kwenziwa amapulasitiki acacile afana ne-polycarbonate ne-acrylic, ukufeza isiphetho esiphezulu ngesikhathi somshini kunganciphisa noma kuqede imisebenzi yokucubungula njengokugaya nokupholisha.Ukunyathelisa kwe-Micro-fine kusetshenziswa i-single point diamond machining (SPDM) kunganikeza ukunemba okungaphansi kuka-200 nm futhi kuthuthukise ubulukhuni obungaphezulu obungaphansi kuka-10 nm.
Nakuba amathuluzi okusika i-carbide evame ukusetshenziselwa izinto eziqinile ezifana nezinsimbi, kungase kube nzima ukuthola i-geometry yethuluzi elifanele lokusika i-aluminium kumathuluzi e-carbide.Ngalesi sizathu, amathuluzi okusika ensimbi ngesivinini esiphezulu (HSS) avame ukusetshenziswa.
I-CNC aluminium machining ingenye yezinketho ezijwayelekile kakhulu zezinto ezibonakalayo.Uma kuqhathaniswa namapulasitiki, i-aluminium isikwa ngokuphakelayo okuphezulu kanye nesivinini, futhi ingasikwa yome noma ngokupholisa.Kubalulekile ukuqaphela izinga le-aluminium lapho usetha ukuyisika.Isibonelo, amamaki angu-6000 ajwayelekile kakhulu, futhi aqukethe i-magnesium ne-silicon.Lawa ma-alloys ahlinzeka ngokusebenza okuphezulu kakhulu uma kuqhathaniswa namabanga ayi-7000, isibonelo, aqukethe i-zinc njengesithako esiyisisekelo se-alloying, futhi abe namandla aphezulu kanye nokuqina.
Kubalulekile futhi ukuqaphela ukuqokwa kolaka lwempahla yesitoko ye-aluminium.Lezi zimpawu zibonisa ukwelashwa okushisayo noma ukuqina kokuqina, isibonelo, ukuthi okokusebenza sekudlulile futhi kungathinta ukusebenza ngesikhathi somshini kanye nasekusetshenzisweni kokugcina.
Imishini ye-CNC ye-axis emihlanu iyinkimbinkimbi ebiza kakhulu kunemishini emithathu yama-eksisi, kodwa ithola ukusabalala embonini yokukhiqiza ngenxa yezinzuzo ezimbalwa zobuchwepheshe.Isibonelo, ukusika ingxenye enezici ezinhlangothini zombili kungashesha kakhulu ngomshini we-axis engu-5, ngoba ingxenye ingalungiswa ngendlela yokuthi i-spindle ingafinyelela izinhlangothi zombili ekusebenzeni okufanayo, kanti ngomshini we-axis 3. , ingxenye izodinga ukusetha okubili noma ngaphezulu.Imishini ye-axis engu-5 ingaphinda ikhiqize amajiyometri ayinkimbinkimbi kanye nokuqedwa kahle kwendawo ukuze kwenziwe imishini enembile ngoba i-engeli yethuluzi ingahambisana nokuma kwengxenye.
Ngaphandle kwezigayo, ama-lathes kanye nezikhungo zokuguqula, imishini ye-EDM namanye amathuluzi angalawulwa yi-CNC.Isibonelo, izikhungo ze-CNC mill+turn zivamile, kanye ne-EDM yocingo ne-sinker.Kumhlinzeki wesevisi wokukhiqiza, ukumiswa kwethuluzi lomshini ovumelana nezimo kanye nezinqubo zomshini kungakhuphula ukusebenza kahle futhi kunciphise izindleko zomshini.Ukuvumelana nezimo kungenye yezinzuzo eziyinhloko zesikhungo somshini we-5-axis, futhi uma kuhlanganiswa nenani eliphezulu lokuthenga lemishini, isitolo sikhuthazwa kakhulu ukusigcina sisebenza 24/7 uma kungenzeka.
I-Precision Machining ibhekisela ekusebenzeni komshini okuletha ukubekezelelana ngaphakathi kuka-±0.05mm, okusebenza kabanzi ekukhiqizeni izimoto, idivayisi yezokwelapha kanye nezingxenye ze-aerospace.
Ukusetshenziswa okujwayelekile kweMicro-Fine Machining kuyi-Single Point Diamond Machining (SPDM noma i-SPDT).Inzuzo eyinhloko yomshini wedayimane iwukuba izingxenye ezenziwe ngomshini ezinezidingo eziqinile zokunyathelisa: ukunemba kwefomu ngaphansi kuka-200 nm kanye nokuthuthukisa ubulukhuni obungaphansi kuka-10 nm.Ekukhiqizeni ama-optical prototypes afana nepulasitiki ecacile noma izingxenye zensimbi ezikhanyayo, ukuqedwa kwendawo ekubunjweni kubalulekile ukucatshangelwa.Umshini wedayimane ungenye yezindlela zokukhiqiza indawo ephezulu enembayo, ephezulu yokuqeda ngesikhathi somshini, ikakhulukazi i-PMMA, i-PC kanye nama-alloys e-aluminium.Abathengisi abasebenza ngokukhethekile ekukhiqizeni izingxenye ze-optical ezivela kumapulasitiki bakhethekile kakhulu, kodwa banikeza isevisi enganciphisa kakhulu izindleko uma kuqhathaniswa nokubunjwa okufushane noma i-prototype.
Yiqiniso, umshini we-CNC usetshenziswa kabanzi kuzo zonke izimboni zokukhiqiza ukukhiqizwa kwezingxenye zensimbi nezepulasitiki ezisetshenziswa ekugcineni kanye namathuluzi.Kodwa-ke, ekukhiqizeni ngobuningi, ezinye izinqubo ezifana namasu okubumba, ukuphonsa noma ukugxiviza ngokuvamile ashesha futhi ashibhile kunokwenza imishini, ngemva kokuba izindleko zokuqala zokubunjwa kanye nokusetshenziswa kwamathuluzi zikhokhiswa inani elikhulu lezingxenye.
I-CNC machining iyinqubo ekhethwayo yokukhiqiza ama-prototypes ezinsimbi namapulasitiki ngenxa yesikhathi sawo sokujika esisheshayo uma kuqhathaniswa nenqubo efana namasu okuphrinta kwe-3D, ukuphonsa, ukubumba noma ukwenza, okudinga ukubunjwa, ukufa, nezinye izinyathelo ezengeziwe.
Lobu buchule 'bokucindezela inkinobho' bokuguqula ifayela le-CAD yedijithali libe ingxenye ngokuvamile bunconywa abasekeli bokuphrinta be-3D njengenzuzo eyinhloko yokuphrinta kwe-3D.Nokho, ezimweni eziningi, CNC kungcono ukuphrinta 3D kanye.
Kungathatha amahora ambalwa ukuqedela ivolumu yokwakha ngayinye yezingxenye eziphrintiwe ze-3D, kuyilapho ukwenziwa kwe-CNC kuthatha imizuzu.
Ukuphrinta kwe-3D kwakha izingxenye ngezendlalelo, okungase kubangele amandla e-anisotropic engxenyeni, uma kuqhathaniswa nengxenye yomshini eyenziwe ngocezu olulodwa lwento.
Ibanga elincane lezinto ezitholakalayo zokuphrinta kwe-3D lingakhawulela ukusebenza kwesibonelo esiphrintiwe, kuyilapho i-prototype eyenziwe ngomshini ingenziwa ngento efanayo nengxenye yokugcina.Ama-prototypes omshini we-CNC angasetshenziselwa izinto zokwakha ezisetshenziswa ekugcineni ukuze kuhlangatshezwane nokuqinisekiswa okusebenzayo kanye nokuqinisekiswa kobunjiniyela kwama-prototypes.
Izici eziphrintiwe ze-3D ezifana nezibhobo, izimbobo ezithenjiwe, izindawo zokukhwelana kanye nokuqedwa kwangaphezulu kudinga ukucutshungulwa kokuthunyelwe, ngokuvamile kusetshenziswa imishini.
Nakuba ukuphrinta kwe-3D kunikeza izinzuzo njengobuchwepheshe bokukhiqiza, amathuluzi emishini yanamuhla ye-CNC ahlinzeka ngezinzuzo eziningi ezifanayo ngaphandle kokushiyeka okuthile.
Imishini yokuguqula ngokushesha ye-CNC ingasetshenziswa ngokuqhubekayo, amahora angama-24 ngosuku.Lokhu kwenza ukucutshungulwa kwe-CNC kube ukonga kokusebenza okufushane kwezingxenye zokukhiqiza ezidinga imisebenzi eminingi.
Ukuze uthole okwengeziwe mayelana nemishini ye-CNC yokwenza ama-prototypes kanye nokukhiqizwa kwesikhashana, sicela uxhumane no-Wayken noma ucele ikhotheshini ngewebhusayithi yabo.
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Isikhathi sokuthumela: Nov-30-2019