Uma othile ethayipha 'ukunemba kwemishini eduze kwami' kubha yokusesha, ngivamise ukuzibuza ukuthi usuke ufunani ngempela. Ingabe i-geography nje, noma isidingo esijulile sesitolo abangashayela kuso, babheke induna emehlweni, futhi baxoxe nge-burr on the titanium actuator housing? Ibinzana ngokwalo lilula ngokukhohlisayo. Ihlanganisa inqubo yokulindela okuphezulu nendawo eyisisekelo, futhi yilapho ukungaqondi kahle kokuqala kuvame ukuvela khona. Ukuba seduze akuqinisekisi amandla. Ngibone abathengi besha bekhetha isitolo esiseduzane, kodwa bathola ukuthi abakwazi ukuphatha umsebenzi wangempela we-5-eksisi ngesikhathi esisodwa noma bengenakho i-metrology yokubekezelela esikhuluma ngakho—cabanga ±0.0005 ku-contour eyinkimbinkimbi, hhayi nje ukubhoboza izimbobo ezithile epuletini.
Ngale Kwekhodi Yeziphu: Ukuchaza Ukunemba Ngemibandela Yangempela
Masiphule 'i-precision machining' ngaphakathi. Akulona igama lokumaketha esiliphonsa kancane. Emhlabeni wethu ku I-Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), iqala ngesitoko. Awukwazi ukwenza ukunemba komshini ube ukusakaza okungalungile. Kungakho iminyaka yethu engamashumi amathathu kugobolondo nokufaka utshalomali kungelona ibhizinisi elihlukile; bayisinyathelo esiyisisekelo. Uma umumo oseduze-netha ovela ku-Foundry unokuncipha kwangaphakathi noma ukujiya kodonga okungahambisani, uhlelo lwe-CNC lulwa impi ehlulwayo kusukela ekuthinteni kwethuluzi lokuqala. Ngakho-ke uma iklayenti lisilethela ukuphrinta kwempompi yasolwandle e-duplex engagqwali, umcabango wami wokuqala akuwona umshini. Ukuthi ngabe inqubo yethu yokusakaza ingaletha okungenalutho okunikeza uhlangothi lomshini ithuba elifanelekile lokushaya lezo ziqephu zokugeleza kwesiteshi.
Uhlu lwezinsizakusebenza luxoxa indaba. I-cast iron, izinsimbi, i-stainless-impela. Kodwa lapho i-spec idinga ama-alloys asekelwe ku-cobalt noma asekelwe ku-nickel, umdlalo uyashintsha. Eduze kwami kucishe kungabi namsebenzi uma isitolo singakuqondi ukuqina komsebenzi, singenazo izigayo zomshini zobumba ezifanele, noma singakwazi ukulawula ukushisa. Ngikhumbula umsebenzi wengxenye ye-turbine seal ku-Inconel 718. Umuntu oqhudelana naye wendawo wawuthatha ngokusekelwe endaweni. Bashisa ngamathuluzi, bafaka ingcindezi eyinsalela, futhi izingxenye zasonteka ngemuva komshini. Iklayenti ligcine lisithumelele izikhala ezingahlengwa noma kunjalo. Ibanga libabize inqwaba yezinto ezibizayo kanye namaviki okulibaziseka.
Ngakho iseluleko sami? Sebenzisa eduze kwami ukuze uthole ozakwethu abangaba khona, kodwa bahlole ngocezu lokuhlola. Buza mayelana nokulawula inqubo yabo ukuze uthole isici esilula kodwa esitshelayo: imbobo ejulile, enobubanzi obuncane ku-304 okungenasici. Bangakwazi ukubamba ubuqotho futhi baqedele ngaphezu kokujula okungu-10x ububanzi? Impendulo yabo—kanye nesampula—izokutshela okungaphezu kwephinikhodi yendawo kumephu.
Umphetho Wokuhlanganisa: Lapho Ukusakaza kanye ne-CNC Kungaphansi Kophahla Olulodwa
Yilapho imodeli yomkhiqizi ohlanganiswe ngokugcwele uthanda khona QSY ishintsha i-calculus. Inzuzo enkulu akukhona nje ukusetshenzelwa, nakuba ukuba ne-Foundry nesitolo semishini esiqhele ngamamitha angamakhulu ambalwa kunciphisa isikhathi sokuhola kakhulu. Imayelana nempendulo nokuziphendulela. Umakhi ohlangabezana nendawo enzima ekulingiseni angahamba aye kumphathi we-Foundry futhi ayibonise. Ithimba labasunguli lingalungisa inqubo yokufaka isango noma yokupholisa yenqwaba elandelayo ngokusekelwe kudatha yomshini wangempela, hhayi nje imininingwane yethiyori.
Sibe nephrojekthi yochungechunge lwemizimba yama-valve ku-CF8M engenasici. Iklayenti lalidinga ukuthobela kwe-ASME B16.34, okusho ukuthi i-NDE eqinile ekulingisini nasekubekezeleni okuqinile ebusweni be-flange nokubhoboza. Ngenxa yokuthi zombili izinqubo zazingaphakathi endlini, sasingakwazi ukwenza i-athikili yokuqala ngomshini, senze ukuhlolwa kwengcindezi, sithole inkinga ye-micro-porosity ekhoneni elinokucindezeleka okukhulu, bese sishintsha idizayini yokukhipha umoya yokubunjwa. Umjikelezo wokuphindaphinda uthathe izinsuku, hhayi amasonto. Iklayenti elicingayo ukunemba imishini eduze kwami ingase ingacabangi ekuqaleni ngesixhumanisi se-Foundry, kodwa ezingxenyeni eziyinkimbinkimbi, ngokuvamile umehluko phakathi kwe-prototype esebenzayo naleyo eyimodeli ebizayo.
Ububi? Kudinga ibhentshi elijulile lonjiniyela abaqeqeshwe ngokuphambene. Abahleli bethu bemishini badinga ukuqonda ukuncipha kokuqina. Isethi yamakhono ethile engaphumi esitolo semisebenzi esiseduze nami eyenza kuphela umshini ophuma esitokweni sebha esithengiwe.
Amathuluzi, Ukulungisa, Namahora Angabonwa
Noma ubani angathenga umshini wesimanje we-CNC. Ubuciko bangempela-kanye nezindleko ezifihliwe-kusesu lendlela yokusebenza kanye nethuluzi. Ngenqwaba yezindlu zamaphampu, singase sichithe amahora angu-40 siklama futhi sakha ukulungiswa kweziteshi eziningi okungokwezifiso esisivumela ukuthi sishicilele u-80% wezici ekusetheni okukodwa. Lokho amahora angama-40 esikhathi esingewona owomshini ngaphambi kokuthi i-spindle iphenduke. Isitolo esiqhudelana ngentengo yendawo nephansi singase seqe lokhu, sisebenzisa i-vise ne-step block, sethula ukusethwa okuningi kanye nephutha elikhulayo. Ingxenye ingase yenziwe, kodwa ngeke icace.
Bese kuba nesoftware. Amasu omshini wesivinini esikhulu wama-alloys, ukugaya nge-trochoidal ukunciphisa umthwalo wamathuluzi—yilapho ulwazi lomklami lukhokha khona. Ayikho kumanuwali. Lokhu sikufunde ngamathuluzi aphukile kanye nezingxenye ezilahliwe kusenesikhathi. Manje, ukuze uthole into entsha efana ne-proprietary nickel alloy, sisazokwenza ukuhlola kokuzinikela, ukudayela okuphakelayo nesivinini ngesandla esilawulini, sibukele umbala we-chip futhi silalele ukusikwa. Leyo inqubo ongeke ukwazi ukuyikhipha noma ukuyithola ngosesho olulula lwendawo.
I-Metrology Reality Check
Ukunemba kuchazwa ngokulinganisa, hhayi inhloso. Isitolo singase sithi ±0.001 amandla, kodwa silinganisa ngani? I-micrometer ephathwayo ilungile kububanzi be-shaft, kodwa ayisizi ngalutho ukuma kweqiniso kwezimbobo zebhawudi eziyi-12 ku-PCD noma iphrofayili ye-manifold egobile. Igumbi lethu le-CMM libaluleke kakhulu njenge-DMG Mori 5-eksisi yethu. Futhi noma kunjalo, ukulawulwa kwemvelo kubalulekile. Sikala izingxenye ezibalulekile zendiza ekuseni, ngemuva kokuthi ilebhu ibambezeleke ngezinga lokushisa ngobusuku obubodwa. Uma uzakwethu wendawo yokwenza imishini enembayo ekala izingxenye phansi esitolo eduze komnyango ovuliwe ehlobo, idatha iyasolwa.
Ngikhumbula isehluleki esangihlaba. Senze ngomshini isethi yokufaka isikhunta sokujova ngensimbi yensimbi ye-H13. Balinganise kahle ku-CMM ku-20°C. Iklayenti liwafake kusisekelo sesikhunta esisebenza ku-90°C. Umehluko wokwanda kwezinga lokushisa ubangele ukungahambi kahle. Besingazange sicabangele izinga lokushisa lokusebenza ekubekeni kwethu ukubekezelelana. Manje, kunoma iyiphi ingxenye yamathuluzi noma yezinga eliphezulu, leyo ngxoxo iyingxenye yokubuyekezwa kokuqala. Isifundo esiqondile, esibuhlungu esilolonge kabusha uhlu lwethu lokuhlola lwe-DFM.
Ukwenza Eduze Kwami Kusebenzele Wena
Ngakho, uma ucinga izinsiza zokunemba zemishini, sebenzisa isihlungi sendawo, kodwa bese wemba ujule. Bheka ubufakazi bokukhiqiza okuhlanganisiwe uma ingxenye yakho iqala njengokulingisa noma ukufoja. Hlola umlando wabo wezinto ezibonakalayo-cela izifundo ze-alloy ethile oyidingayo. Cela ukuvakasha. Isitolo esihlanzekile, esihlelekile esinemishini yesimanje, enakekelwa kahle kanye nelebhu yekhwalithi ezinikele kuwuphawu oluhle. Buza nge-CMM yabo enkulu kunazo zonke, ukunemba kwayo kwevolumu, nokuthi ilinganiswa kangaki.
Enkampanini efana neyethu, QSY, umlando weminyaka engu-30 awuyona nje inombolo. Kusho ukuthi senze ngomshini izinkulungwane zezingxenye ezihlukene, kusukela ezihlahleni ezilula kuya ezingxenyeni ze-reactor, futhi sakhe ulwazi lwesikhungo lwalokho okungahamba kabi. Lokho okuhlangenwe nakho kugxila ekuhleleni inqubo. Isici esiseduze nami kumakhasimende ethu ngokuvamile sihumushela ekusebenzisaneni okulula—angavakashela, abone izingxenye zawo eziqhubekayo, futhi abe nezibuyekezo zobunjiniyela bobuso nobuso. Lelo nani elingaphatheki ngokuvamile lingaphezu komehluko omncane wezindleko zengxenye ngayinye ukusuka kumnikezeli okude, ongaziwa.
Ekugcineni, ukwenza ukunemba kweqiniso kuwukubambisana, hhayi umsebenzi. Ukusesha kufanele kube ngozakwethu onekhono okwenzekayo evumelana nezwe, hhayi ngenye indlela. Isitolo esifanele sizokubuza imibuzo eminingi njengoba wenza, ngoba bayazi ukuthi isithunzi sabo sifakwe kuzo zonke izingxenye abazithumelayo.
