Mu madipatimenti owongolera khalidwe padziko lonse lapansi, makina oyezera zinthu (CMM) amakhala ndi udindo. Pamene gawo la ndege lopangidwa ndi makina likufunika kutsimikiziridwa motsutsana ndi kapangidwe kake ka uinjiniya, pamene zida zolondola ziyenera kuyang'aniridwa musanazikonze, pamene choyikamo chachipatala chikufunika satifiketi ya kukula kwake chisanagwiritsidwe ntchito pa opaleshoni - CMM nthawi zambiri imakhala woweruza womaliza. Miyeso yake imakhala ndi kudalirika kwaukadaulo komwe kumakhudza zisankho zomwe zimakhudza chitetezo, magwiridwe antchito, ndi udindo wamalonda.
Komabe pa zamagetsi zonse zamakono, masikelo olondola, ndi mapulogalamu ovuta omwe amapanga CMM yamakono, maziko a kulondola kwa makinawo ndi mwala. Kumvetsetsa chifukwa chake - ndi kumvetsetsa zomwe zimachitika pamene mwalawo suli wabwino mokwanira - kumavumbula chinthu chofunikira kwambiri pa momwe kulondola kwa muyeso kumachitikira m'machitidwe athupi.
Momwe CMM Imayezera ndi Momwe Imagwirira Ntchito
Makina oyezera zinthu amayesa ma coordinate a mfundo za three-dimensional pa chinthu chenicheni. Amachita izi mwa kubweretsa sensing probe kuti igwirizane ndi (kapena pafupi, ngati pali ma probe osakhudzana ndi kukhudzana) pamwamba pa gawo lomwe likuyesedwa, kulemba malo a XYZ a malo aliwonse olumikizirana, ndikuwerengera mawonekedwe a geometric (ma planes, ma cylinders, ma cones, malo omasuka) omwe amagwirizana bwino ndi mtambo wa mfundo woyesedwa.
Kulondola kwa njirayi kumadalira zinthu zingapo zomwe zimagwira ntchito limodzi ngati dongosolo:
- Kulondola kwa ma axe atatu olunjika a makinawo (momwe amayendera bwino mu mizere yowongoka, komanso momwe malo awo amayezeredwera molondola ndi ma linear encoders)
- Kulondola ndi kubwerezabwereza kwa dongosolo la probe (momwe limakhalira limayamba pamene likukhudzana ndi momwe limasiyanirana molondola ndi mfundo yowerengera sikelo)
- Kukhazikika kwa kutentha kwa kapangidwe ka makina (kuti tipewe kufalikira kosiyana pakati pa zigawo zosiyanasiyana)
- Ubwino wa malo owonetsera deta (malo osalala omwe miyeso yonse ya Z-axis imachokera komanso omwe mawonekedwe a makina amakhazikika)
Chinthu chomaliza ichi — malo ofotokozera datum — ndi mbale ya granite pamwamba pomwe CMM imamangidwa. Mu mapangidwe ambiri a CMM, mbale ya granite pamwamba si tebulo longokhala chete pomwe makina amakhala. Ndi gawo logwira ntchito la makina oyezera. Chiyambi cha sikelo ya Z-axis ya CMM chimafotokozedwa poyerekeza ndi pamwamba apa; njira zoyendetsera ma axes opingasa a makinawo zimayikidwa ndipo zimachokera ku malo awa; gawo lomwe likuyesedwa limakhala pamwamba apa (kapena pa chomangira chomwe chimayikidwapo). Cholakwika chilichonse pa kusalala kapena kukhazikika kwa nthawi yayitali kwa mbale ya granite chimafalikira mwachindunji ku ma coordinates omwe CMM imanena.
Mbale ya Granite Surface monga Datum Zero
Mu metrology yakale, datum ndi chizindikiro chenicheni cha chiphunzitso (mfundo, mzere, kapena mtunda) chomwe chimayeza. Mu dziko lachilengedwe la CMM, datum plane ndi pamwamba pa granite surface plate.
Wopanga CMM akamakonza makina atsopano, amagwiritsa ntchito pamwamba pa tebulo la granite ngati chizindikiro chokhazikitsa dongosolo lamkati la makinawo. Makamaka:
- Pamwamba pa tebulo pamatanthauza ndege ya XY ya makina ogwirizanitsa makina
- Mlatho wa CMM kapena mzere wolunjika wa gantry (Z) umatchulidwa pa ndege iyi
- Kuwongoka kwa nkhwangwa zopingasa (X ndi Y) kumayesedwa ndikulipidwa poyerekeza ndi mawonekedwe enieni a pamwamba pa tebulo
Kuwerengera uku kumasungidwa ngati tebulo lowerengera momwe zinthu zilili mkati mwa chowongolera cha CMM. Makina akamayesa gawo, kuwerengera kumeneku kumakonzedwa kuti kukhale ndi zolakwika zomwe zimachitika mu kayendedwe ka makinawo - zolakwika zomwe zidayesedwa ndikuwonetsedwa poyerekeza ndi pamwamba pa granite panthawi yowerengera.
Ngati granite pamwamba pake isintha mawonekedwe — kudzera mu kuwonongeka, kutentha kwa kutentha, kapena kupumula kwa kupsinjika kwamkati — tebulo lolipirira silikufotokozanso bwino momwe makinawo amagwirira ntchito. CMM imawoneka kuti imagwira ntchito bwino (imayenda, probe imayambitsa, miyeso imanenedwa) koma miyesoyo ili ndi zolakwika zomwe zimawonjezeka pamene mkhalidwe wa granite ukuchepa. Zolakwika izi ndizobisika kwambiri chifukwa sizongochitika mwachisawawa — zimagwirizana ndi malo, zimawoneka ngati tsankho m'madera a tebulo pomwe cholakwika cha mawonekedwe chachitika.
Kusankha Magiredi a Ntchito za CMM
Sikuti ntchito iliyonse ya CMM imafuna giredi yofanana yambale ya pamwamba pa granite, koma kusankha kuyenera kuyendetsedwa ndi zofunikira zosatsimikizika za muyeso wa pulogalamuyo, osati ndi mtengo wogulira tebulo.
Ma CMM Othandizira ndi Ma Calibration Laboratories
Ma CMM omwe amagwiritsidwa ntchito ngati makina ofotokozera — kulinganiza ma CMM ena, kutsimikizira zinthu zofotokozera, kapena kugwira ntchito ngati cholozera kutsata njira yoyezera — nthawi zambiri amafunika giredi 00 (giredi ya labotale pa DIN 876) kapena giredi ya Laboratory pa ASME B89.3.7. Awa ndi ma plate apamwamba kwambiri opangidwa m'malonda, okhala ndi kulekerera kosalala pamlingo wotsika wa ma micrometer a manambala amodzi pamwamba pa tebulo lonse.
Pa mulingo uwu, pamwamba pa tebulo la granite payeneranso kuyesedwanso nthawi ndi nthawi ndikutsimikiziridwanso, ndipo miyeso yake iyenera kutsatiridwa ndi miyezo ya dziko. Nthawi yowunikiranso imadalira mphamvu yogwiritsidwa ntchito komanso kufunika kwa miyeso, koma nthawi zambiri imakhala pachaka kapena kawiri pachaka.
Kuyang'anira Pansi Yopangira CMM
Ma CMM omwe amagwiritsidwa ntchito poyesa kupanga — kutsimikizira kuti zida zopangidwa ndi makina zimakwaniritsa zofunikira za kukula kwake asanaziphatikizidwe — nthawi zambiri amagwira ntchito ndi mapepala apamwamba a giredi 0 kapena giredi 1. Zofunikira zosatsimikizika zoyezera poyesa kupanga zimakhala zomasuka kuposa ntchito yowunikira, ndipo motero, zofunikira za kusalala patebulo la granite sizokhwima kwambiri.
Komabe, "kumasuka kwambiri" kuyenera kumvedwabe poganizira za kulekerera kwa magawo omwe akuwunikidwa. Ngati CMM yopangira ikugwiritsidwa ntchito kutsimikizira mawonekedwe omwe ali ndi kulekerera kwa 10–20 μm, mbale ya pamwamba ya grade 1 (yokhala ndi kusalala pakati pa 5–10 μm patebulo lapakati) ndiyoyenera. Kugwiritsa ntchito mbale ya pamwamba ya grade 2 kapena workshop-grade pakugwiritsa ntchito kumeneku kungayambitse kuti cholakwika cha mawonekedwe a tebulo chipereke gawo lalikulu la kusatsimikizika konse kwa muyeso.
Ma CMM Ang'onoang'ono a Zamagetsi ndi Zowunikira Zolondola
Mu magawo opanga zamagetsi ndi ma optics olondola, ma CMM ang'onoang'ono amagwiritsidwa ntchito poyesa mawonekedwe pa mulingo wa micrometer ndi sub-micrometer pazinthu monga ma connector housings, ma optical mounts, ndi makamera opangidwa ndi makina olondola. Mapulogalamuwa amafuna ma plates apamwamba a grade 00 - ndipo, nthawi zina, matebulo a granite olamulidwa ndi kutentha - kuti akwaniritse zosatsimikizika zomwe zimafunika muyeso.
Njira Zolephera Zodziwika: Cholakwika ndi Chiyani Ngati Ubwino wa Granite Siwokwanira
Zotsatira za kutchula kapena kulandira granite yosayenera mu CMM zimaonekera m'njira zingapo zolephera:
Kuchepetsa Malo Okhazikika M'malo Ogwiritsidwa Ntchito Kwambiri
Pakati pa tebulo la CMM, ndi madera omwe ali pansi pa malo omwe amagwiritsidwa ntchito nthawi zambiri, amakumana ndi kuchuluka kwa kukhudzana kwa probe komanso kuchuluka kwa magawo odzaza. Pakapita nthawi, madera awa amatha kuwonongeka koyezeka, zomwe zimapangitsa kuti zikhale zopindika pang'ono. Tebulo la granite la grade 0 kapena grade 00 lopangidwa bwino, lopangidwa kuchokera ku zinthu zolimba, limalimbana ndi kuwonongeka kumeneku bwino. Mwala wotsika - makamaka marble kapena granite wa imvi wochepa - ndi wofewa kwambiri ndipo umapanga mawonekedwe owonongeka mwachangu.
M'malo opangira zinthu komwe malo enaake ogwirira ntchito amagwiritsidwa ntchito kangapo pamwezi, kuvala kumeneku kumatha kusonkhana mpaka kufika pokhudza kulondola kwa muyeso mkati mwa chaka chimodzi kapena ziwiri. Zizindikirozi zimawoneka ngati kusagwirizana kwabwino kapena koyipa mu Z-coordinate ya zigawo zomwe zimayesedwa pamalo osweka - kusagwirizana komwe sikungadziwike nthawi yomweyo ngati vuto la kuvala patebulo.
Kupotoza kwa Kutentha Kuchokera ku Kukhudza Pansi
Matebulo a granite a CMM m'malo opangira zinthu nthawi zambiri amaikidwa mwachindunji pansi pa fakitale yomwe imakumana ndi kutentha kwambiri - makamaka pafupi ndi makoma akunja, zitseko zonyamula katundu, kapena pafupi ndi zida zopangira kutentha. Ngati tebulo la granite lili pafupi ndi kutentha ndi pansi losafanana, kutentha kumadutsa patebulo mosagwirizana, zomwe zimapangitsa kutentha komwe kumasokoneza pamwamba pa tebulo.
Granite wokhuthala wapamwamba (monga granite wakuda wokhuthala kwambiri) uli ndi mphamvu yotsika ya kutentha komanso CTE yotsika kuposa granite wamba wa imvi, zomwe zikutanthauza kuti umayankha pang'onopang'ono ku kusokonezeka kwa kutentha ndipo umasinthasintha pang'ono pamene kutentha kulipo. Nthawi yokhazikika ya kutentha kwa tebulo la granite lokhuthala komanso lokhuthala ndi yayitali - zimatenga maola ambiri kuti kusokonezeka kwa kutentha kuwonekere - koma kusokonezekako kukakhazikika, kumapitirira kwa nthawi yayitali yofanana pambuyo poti gwero la kutentha lachotsedwa.
Njira yochepetsera kutentha ndi kulekanitsa tebulo la granite la CMM kuchokera pansi — pogwiritsa ntchito zomangira zodzipatula zomwe zimaperekanso kulekanitsa kutentha — ndikuyika CMM pamalo otetezeka kutentha kutali ndi magwero a kutentha ndi makoma akunja.
Kuyenda ndi Kupumula mu Mwala Wosakalamba Wokwanira
Granite yomwe sinakonzedwe mokwanira komanso yochepetsedwa kupsinjika isanayambe kukonzedwa bwino ingapitirize kupumula pang'onopang'ono ikaperekedwa, zomwe zimapangitsa kuti pamwamba pa makinawo pazinyalala kuchoka pa mawonekedwe ake omwe adatchulidwa kwa miyezi ingapo. Njirayi nthawi zambiri imakhala yocheperako ndipo imapanga kuchuluka kwa kusuntha kosakwana micrometer pachaka muzinthu zomwe zakonzedwa bwino - koma pankhani ya zofunikira za CMM zochepa, ngakhale kusuntha pang'onopang'ono kumeneku ndikofunikira kwambiri pa moyo wazaka zambiri wa zida zolondola.
Njira yoyenera yothetsera vutoli ndi kutsimikizira zinthu zomwe zikubwera kuchokera kwa wopanga mbale yopangira pamwamba, kuphatikizapo nthawi yochepa yokalamba ya zinthu zodulidwa bwino asanayambe kukonza molondola. Wopanga amene amadumpha sitepe iyi kuti achepetse nthawi yopangira akugulitsa chinthu chomwe chikuwoneka chogwirizana ndi malamulo panthawi yopereka koma chikuchepa ntchito.
Kusamalira Matebulo a Granite a CMM Pogwira Ntchito
Monga zida zonse zoyezera molondola, ma granite a CMM pamwamba amafunika kukonzedwa nthawi ndi nthawi ndikusinthidwa kuti atsimikizire kuti akupitilizabe kukwaniritsa kusalala komwe adapatsidwa. Njira zabwino zosamalira matebulo a granite a CMM ndi awa:
Kuyang'anira kutentha ndi zolemba — Kusunga zolemba za kutentha kwa tebulo kumazindikira momwe kutentha kumayendera ndipo kumathandiza kugwirizanitsa zolakwika muyeso ndi zochitika za kutentha.
Kuyeretsa nthawi zonse — Pamwamba pake payenera kutsukidwa nthawi ndi nthawi ndi zotsukira zoyenera (pH yopanda mpweya, yosawononga mpweya) kuti muchotse matope, zotsalira za coolant, ndi tinthu towononga mpweya zomwe zingayambitse kuwonongeka kwa pamwamba. Pamwamba pake sipayenera kutsukidwa ndi zinthu zowononga mpweya.
Kutsimikiziranso kusalala kwa nthawi ndi nthawi — Kusalala kuyenera kuyezedwanso motsutsana ndi chitsimikizo choyambirira kuti zizindikire kusuntha kulikonse kapena kuwonongeka. Njira yoyezera ndi chida ziyenera kulembedwa ndikutsatiridwa motsatira miyezo yofanana ndi chitsimikizo choyambirira.
Kusamalira mosamala zinthu zolemera — Zinthu zolemera kapena zigawo ziyenera kuyikidwa pamwamba pa granite mofatsa ndikuthandizidwa pamalo oyenera kuti tipewe kudzaza zinthu zomwe zingadule m'mphepete kapena kuyambitsa kupsinjika kwapafupi.
Kukonza ma chips ndi kuwonongeka — Ma chips ndi malo owonongeka ayenera kulembedwa ndikuwunikidwa. Ma chips ang'onoang'ono m'malo omwe si ofunikira kwambiri sangakhudze kulondola kwa makina ngati ali kunja kwa malo ogwirira ntchito a probe. Ma chips m'malo omwe amagwiritsidwa ntchito kwambiri ayenera kuwunikidwa malinga ndi bajeti ya zolakwika za makina kuti adziwe ngati kubwerezanso kapena kusintha ndikofunikira.
Gome la Granite monga Gawo la Bajeti Yosatsimikizika Yoyezera
ISO 10360, muyezo wapadziko lonse wolamulira kuyesa magwiridwe antchito a CMM, umatchula momwe kulondola kwa muyeso wa volumetric wa CMM kuyenera kudziwidwira ndikufotokozedwa. Muyesowu umasiyanitsa pakati pa kulondola kwa volumetric komwe kwanenedwa ndi CMM ndi kusatsimikizika konse kwa muyeso komwe kumagwiritsidwa ntchito pa ntchito inayake yoyezera.
Kusatsimikizika konse kwa muyeso wa CMM kumaphatikizapo zopereka kuchokera ku:
- Kulondola kwa CMM volumetric (kuchokera ku mayeso a ISO 10360)
- Zolakwika pakuyenerera kafukufuku
- Kugwirana ndi zigawo ndi zotsatira zake
- Zotsatira za kutentha pa gawo ndi makina
- Cholakwika cha mawonekedwe a pamwamba pa tebulo la granite
Chopereka chomalizachi — cholakwika cha mawonekedwe a tebulo la granite — nthawi zambiri sichimachotsedwa mu kusanthula kosavuta kwa kusatsimikizika, makamaka m'malo opangira komwe kuyang'ana kwambiri nthawi ya kuzungulira kwa gawo lililonse m'malo mwa kusanthula kusatsimikizika. Kusachichotsa kumabweretsa kusatsimikizika kwa muyeso komwe kwanenedwa komwe kuli koyenera; zotsatira zenizeni za muyeso zili ndi gawo lina la cholakwika lomwe silikufotokozedwa.
Bajeti yokwanira komanso yotsimikizika yoyezera kusatsimikizika — monga momwe ISO/IEC 17025 imafunira ma laboratories ovomerezeka oyezera, komanso ngati njira yabwino yoyezera zinthu zofunika kwambiri — iyenera kuphatikizapo gawo la pamwamba pa tebulo la granite. Izi zimafuna kudziwa kusalala kwenikweni kwa tebulo (kuchokera ku kusalaza kwaposachedwa), ndikuyerekeza momwe cholakwika cha kusalalako chimayenderana ndi miyeso yomwe ikuchitika.
Kutsiliza: Detum yomwe Chilichonse Chimadalira
CMM ndi njira yoyezera, ndipo monga njira zina zonse zoyezera, kulondola kwake kumachepetsedwa ndi kulondola kwa njira yake yoyezera. Granite surface plate ndi njira imeneyi — ya Z axis, ya XY plane, yokonzera ziwalo, komanso yowunikira mapu onse a zolakwika za makina.
Kuyika ndalama moyenera pa ubwino wa chizindikirochi — kutchula giredi yoyenera, kutsimikizira ubwino wa zinthu, kuzisunga bwino, ndikuzikonzanso nthawi ndi nthawi — si nkhani yaikulu. Ndi maziko a umphumphu wa kuyeza. Ndipo umphumphu wa kuyeza, m'mafakitale kuyambira ndege mpaka zida zamankhwala mpaka kupanga zinthu za semiconductor, ndiye maziko a ubwino wa chinthu ndi chitetezo cha ogwiritsa ntchito.
Nthawi yotumizira: Juni-26-2026