Ta yaya dandamalin gani na granite zai iya cimma daidaiton kusurwa na 0.01μrad?

A fannin gwaje-gwajen gani na daidai da inganci da kuma kera kayayyaki masu inganci, kwanciyar hankali a kusurwa a matakin 0.01μrad babban alama ne. Dandalin gani na granite, tare da kayan aikinsu da haɗin gwiwar fasaha, sun zama babban abin da ke haifar da cimma daidaito mai girma.

Amfanin kayan gini yana da tushe mai ƙarfi. Granite, a matsayin dutse mai kama da dutse wanda ilimin ƙasa ya samar tsawon ɗaruruwan shekaru, ya shahara saboda ƙarancin yawan faɗaɗa zafi, wanda rabin ƙarfe ne kawai da kuma kashi ɗaya bisa huɗu na aluminum. Lokacin da zafin jiki ya canza da 1℃, ɓangaren granite mai tsawon mita 1 yana faɗaɗa da micromita 6 kawai, yayin da ɓangaren aluminum yana faɗaɗa da micromita 23. Wannan yana hana karkacewar kusurwar da lalacewar zafi ke haifarwa. A halin yanzu, kyakkyawan aikin damfararsa na iya rage girgizar waje cikin sauri, yana kiyaye dandamalin a cikin yanayi mai tsauri da kuma rage tsangwama ga abubuwan gani.

Tsarin tsari mai kyau yana ƙara tauri. Tsarin gani na granite, bayan ingantaccen tsarin injiniya, ya ƙara tauri sosai kuma yana iya tsayayya da nakasar kaya yadda ya kamata. Daidaiton sarrafa saman sa ya kai matakin farko a masana'antar. Idan aka ɗauki daidaiton matakin 00 wanda ya cika ƙa'idar GB4987-85 a matsayin misali, haƙurin lanƙwasa shine 2×(1 + d/1000)μm kawai (d shine tsayin diagonal), yana ba da ma'anar shigarwa mai faɗi sosai ga kayan aikin gani.

Ana samun daidaiton aiki ta hanyar haɗin gwiwa na fasaha. Lokacin da aka sanye shi da tsarin keɓewar girgiza mai zurfi kamar maɓuɓɓugan iska ko levitation na maganadisu, dandamalin granite zai iya ware girgizar ƙasa da ta mita mai yawa. Tare da ƙarin kayan aikin aunawa masu inganci kamar na'urorin auna laser, ana sa ido kan canje-canjen kusurwa a ainihin lokaci. Da zarar karkacewar ta wuce iyakar 0.01μrad, tsarin sarrafa martani nan take yana sarrafa tsarin gyara don gyara don tabbatar da cewa dandamalin koyaushe yana cikin yanayi mai inganci da kwanciyar hankali.

Daga ainihin kayan zuwa ƙarfafa fasaha, dandamalin gani na granite, tare da kwanciyar hankali na zafi, juriya ga girgiza da fa'idodin sarrafa daidaito a matsayin tushen sa, tare da fasahar sarrafawa mai hankali, ya sami nasarar ketare iyakar daidaiton 0.01μrad kuma ana amfani da shi sosai a fannoni na zamani kamar photolithography, lura da ilmin taurari da auna laser, yana haɓaka bincike da ƙera na'urorin gani masu inganci zuwa sabon tsayi.