Chifukwa Chake Omanga Makina Olondola Amapitiliza Kusintha Kuchokera ku Chitsulo Chopangidwa ndi Iron kupita ku Granite

Aliyense amene wakhala nthawi yayitali pa chipinda choyezera zinthu za metrology mwina waonanso momwemo: makina akale amakhala pa mabedi achitsulo, atsopano pa miyala yakuda. Kusinthaku sikunachitike chifukwa granite imawoneka yodabwitsa kwambiri pansi pa magetsi. Izi zinachitika chifukwa cha vuto la fizikisi losasangalatsa - kukula kwa kutentha.

Chitsulo chopangidwa ndi chitsulo chimakula ndi kufupika pa 10-12 x 10⁻⁶ pa °C. Zimenezi zimamveka zazing'ono mpaka mutaziyika pafupi ndi granite yachilengedwe, yomwe nthawi zambiri imakhala pafupifupi 5-8 x 10⁻⁶ pa °C, ndipo m'ma granite ena akuda okhuthala pafupi ndi 4-5 x 10⁻⁶. Pa nsanja yoyezera ya mita imodzi, kugwedezeka kwa 1°C kutentha kozungulira kumatha kusuntha pamwamba pa chitsulo chopangidwa ndi chitsulo ndi ma microns angapo kuposa granite yofanana. Pa kulekerera pansi pa workshop, palibe amene amasamala. Pa CMM yoyang'ana gawo la semiconductor wafer, kapena laser interferometer yokhala ndi sub-micron repeatable, kusiyana kumeneko ndi mpira wonse.

Kuchepetsa kutentha n'kofunika kwambiri monga kukula

Kukhazikika kwa kutentha kumakopa chidwi chachikulu, koma kuletsa kugwedezeka kwa mphamvu kungakhale kofunikira kwambiri pa chilichonse chomwe chikuyenda bwino kwambiri - mitu yosankhidwa, magawo a XY, mapulatifomu okhala ndi mpweya. Granite ndi crystalline aggregate osati chitsulo chofanana, kotero kugwedezeka kwa makina sikufalikira kudzera mu chitsulo chopangidwa ndi chitsulo. Malire a tirigu wamkati amafalikira ndikuyamwa mphamvu m'malo moitumiza bwino. M'machitidwe awa izi zikutanthauza kutimaziko a graniteImakhazikika mwachangu makina akasiya kuyenda, zomwe zimapangitsa kuti nthawi yogwira ntchito ikhale yochepa komanso kuti igwiritsidwe ntchito kwambiri pa mizere yowunikira ndi yosonkhanitsira zinthu.

Palinso nkhani ya zomwe zimachitika pakapita nthawi. Mabedi achitsulo opangidwa ndi chitsulo, ngakhale omwe amachepetsa kupsinjika, amatha kufalikira pang'ono pakapita zaka zambiri pamene kupsinjika kwa mkati mwa chitsulo kumafalikiranso. Granite, yomwe idapangidwa kale ndi mphamvu yachilengedwe yayikulu pakapita nthawi, ilibe vuto limenelo - silikukhazikika momwe chitsulo chimakhalira.

Si granite yonse yomwe ili yofanana

Iyi ndi gawo lomwe limakhumudwitsa ogula ambiri. Granite imagulitsidwa molingana ndi kuchuluka ndi mtundu wa matabwa momwe amagulitsidwira pa mitundu, koma magwiridwe antchito amasiyana kwambiri pakati pa miyala. Mwala wocheperako, kapena zinthu zomwe zimakhala ndi mitsempha yowoneka bwino komanso tirigu wosagwirizana, sudzakhala wosalala mofanana pakapita nthawi ngati granite wakuda wokhuthala, wopyapyala pamlingo wa 2,900-3,100 kg/m³. Marble nthawi zina amasinthidwa ndi ogulitsa ang'onoang'ono chifukwa ndi wotsika mtengo komanso wosavuta kupangira makina, koma marble ndi mwala wa metamorphic carbonate - wofewa, woboola kwambiri, komanso wosakhazikika kwambiri kuposa granite yeniyeni. Pa kauntala yokongoletsera yomwe siyofunikira. Pa mbale ya pamwamba yomwe CMM probe idzagwiritsidwa ntchito kangapo patsiku, ndizofunikira kwambiri, ndipo ndi imodzi mwa njira zomwe ogula amapezera ndalama zochepa osazindikira mpaka kusintha kwa calibration kuonekera miyezi ingapo pambuyo pake.

Kumene izi zimawonekera m'machitidwe

Kusintha kwa maziko a granite kumaonekera kwambiri mu zida zowunikira za semiconductor, PCB drilling ndi AOI systems, makina oyezera atatu, laser interferometry setups, komanso kwambiri mu batri ndi precision optics manufacturing, komwe sub-micron positioning yakhala chinthu chofunikira kwambiri m'malo mokhala chinthu chapamwamba. Pamene kulolerana m'mafakitale awa kukupitirirabe kulimba - motsogozedwa ndi chip nodes zazing'ono, zigawo zoonda za batri, ndi laser systems zothamanga - kusiyana pakati pa chitsulo chopangidwa "chabwino mokwanira" ndi granite yokhazikika m'magawo kudzakhala kofunikira kwambiri, osati kocheperako.

Ngati pali mfundo imodzi yomwe mainjiniya angaganizire pa nsanja yatsopano yolondola, ndi iyi: funsani kuchuluka kwenikweni kwa kachulukidwe ndi kuchuluka kwa kutentha, osati "granite" yokha ngati chinthu choyang'ana. Kusiyana pakati pa granite wokhuthala wosankhidwa bwino ndi cholowa chotsika kungakhale kusiyana pakati pa makina omwe amasunga calibration kwa zaka khumi ndi omwe amafunika kukonzanso calibration kotala lililonse.