Hanyoyin Dubawa na Daidaitacce don Girman Farantin Surface na Granite & Bayani dalla-dalla

An san su saboda launinsu na baƙar fata mai ban mamaki, tsarinsu mai kauri iri ɗaya, da kuma kyawawan halaye na musamman—gami da juriya ga tsatsa, juriya ga acid da alkalis, kwanciyar hankali mara misaltuwa, tauri mai yawa, da juriya ga lalacewa—faranti na saman dutse suna da mahimmanci a matsayin tushen ma'auni na daidaito a aikace-aikacen injiniya da kuma nazarin yanayin dakin gwaje-gwaje. Tabbatar da cewa waɗannan faranti sun cika ƙa'idodin girma da na geometric daidai yana da mahimmanci don aiki. Ga hanyoyin da aka saba amfani da su don duba ƙayyadaddun bayanai.

1. Duba Kauri

• Kayan aiki: Na'urar auna vernier mai girman 0.1 mm.
• Hanya: Auna kauri a tsakiyar dukkan bangarorin guda hudu.
• Kimantawa: Lissafa bambanci tsakanin matsakaicin da mafi ƙarancin ƙima da aka auna a kan faranti ɗaya. Wannan shine bambancin kauri (ko bambanci mai tsanani).
• Misali na Daidaitacce: Ga farantin da aka ƙayyade kauri na 20 mm, bambancin da aka yarda yawanci yana cikin ±1 mm.

2. Duba Tsawon Lokaci da Faɗi

• Kayan aiki: Tef ɗin ƙarfe ko mai mulki mai iya karantawa na mm 1.
• Hanya: Auna tsayi da faɗi a kan layuka uku daban-daban kowannensu. Yi amfani da matsakaicin ƙima a matsayin sakamako na ƙarshe.
• Manufa: Yi rikodin ma'auni daidai don lissafin adadi da kuma tabbatar da daidaito ga girman da aka tsara.

3. Dubawar Faɗi

• Kayan aiki: Daidaitaccen madauri (misali, madauri mai madauri na ƙarfe) da ma'aunin fesawa.
• Hanya: Sanya gefen madaidaiciya a saman farantin, gami da gefen biyu. Yi amfani da ma'aunin fesawa don auna gibin da ke tsakanin gefen madaidaiciya da saman farantin.
• Misali na Daidaitacce: Matsakaicin karkacewar lanƙwasa da aka yarda da ita za a iya ƙayyade shi azaman 0.80 mm ga wasu maki.

4. Dubawa Mai Mura (Kusurwar 90°)

• Kayan aiki: Mai daidaita kusurwar ƙarfe 90° mai cikakken daidaito (misali, 450×400 mm) da ma'aunin feller.
• Hanya: Sanya ma'aunin kusurwar da ƙarfi a kan kusurwar farantin. A auna duk wani gibi tsakanin gefen farantin da ma'aunin feel. Maimaita wannan tsari ga dukkan kusurwoyi huɗu.
• Kimantawa: Mafi girman gibin da aka auna yana ƙayyade kuskuren murabba'i.
• Misali na Daidaitacce: Sau da yawa ana ƙayyade juriyar iyaka da aka yarda da ita ga karkacewar kusurwa, misali, a matsayin 0.40 mm.

Ta hanyar bin waɗannan ƙa'idodin dubawa masu inganci da daidaito, masana'antun suna ba da tabbacin cewa kowane farantin saman dutse yana ba da daidaiton lissafi da ingantaccen aikin da ake buƙata don ayyukan aunawa masu mahimmanci a masana'antu a duk duniya.