He maha ngā wā ka tūtaki ngā kaihoko e whakataurite ana i ngā pereti mata karāhe mai i ngā kaiwhakarato rerekē ki tētahi raruraru puku: ka taea e ngā pereti e rua te kī he tika "Paenga 0" he "Paenga AA" rānei, engari kāore tonu i te ōrite te tikanga, nā te mea he rerekē ngā paerewa ā-motu e pā ana ki ngā tātai manawanui. Ka whakamāramahia e tēnei aratohu ngā mea e tohua ana e ngā paerewa matua me te take he aha te hiranga o te rerekētanga ina rapu taputapu koe.
He aha kāore he paerewa kotahi mō te ao whānui
Ka whakatauritea ngā pereti mata karāhe ki ngā ātete papatahi e taurite ana ki te rahi o te pereti — kāore e taea e te pereti 1600mm me te pereti 300mm te pupuri i te ātete tino ōrite. I whakawhanakehia e ngā whenua rerekē ā rātou ake tikanga mō tēnei tauine, i te nuinga o te wā i te wā kotahi o te paerewa ahumahi:
- Tiamana — Ko te DIN 876 pea te paerewa e tino whakamahia whānuitia ana puta noa i te ao, e tautuhi ana i ngā tohu tika 00, 0, 1, me te 2, ko te tohu 00 te mea tino piri. E kapi ana te DIN 875 me te DIN 650 i ngā āhuatanga taputapu karāhe.
- Te Hononga o Amerika — Ko te Paerewa ā-Motu GGG-P-463c me te ASME B89.3.7 hou ake e tautuhi ana i ngā tohu AA, A, me B mō ngā pereti mata, koinei te paerewa e whakatauritea ana e te nuinga o ngā taiwhanga ine me ngā toa mīhini o Amerika.
- Hapani — Ka whakatakoto a JIS B 7513 i tana ake pūnaha whakatauranga, e whakamahia whānuitia ana e ngā taputapu i hangaia mā ngā kaihanga Hapani, i kaweake rānei ki ngā kaihanga, inā koa i roto i te mekameka tuku haurua-ira.
- Haina — Ngā paerewa o te GB/T, kua tata atu nei ki ngā paerewa o te ao i ngā tau tata nei, i te mea kei te piki haere te mahi a ngā taputapu tika i hangaia e Haina ki ngā mākete kaweake.
- Te Hononga o Peretānia — BS 817, Rūhia — GOST 10905, me Wīwī — Ko ngā paerewa NF te whakaoti i te rārangi o ngā paerewa e whakamahia tonutia ana i runga i te whenua taketake, i te whenua ūnga rānei o te taputapu.
He aha te mea tino rerekē i waenganui i a rātou
Ehara te tautohetohe matua i waenga i ngā paerewa i te mea he whakaaro noa iho — engari ko te tātai pāngarau e whakamahia ana e ia paerewa hei tatau i te rerekētanga papatahi mōrahi e whakaaetia ana i runga i te roa whakarara o te pereti. Ka taea e te pereti DIN 876 Grade 0 me te pereti JIS Grade 1 o ngā rahinga ōrite te puta he ātete tata engari kāore i te ōrite. Mō te nuinga o ngā tono ahumahi, kāore he take o te rerekētanga. Mō ngā taiwhanga ine e mahi ana i te whakatikatika ka taea te whai, mō ngā taputapu rānei e tukuna ana ki tētahi kiritaki e hiahia ana ki te tiwhikete DIN, JIS rānei, ehara i te mea pērā.
Koinei te take, i te wā e rapu ana i ngā rauemingā wāhanga karāheMō te kaweake, he mea nui kia pātai ki te kaiwhakarato ko tēhea paerewa e tohua ana e te tiwhikete whakatikatika — kaua ko te tau tohu anake e puta ana i runga i ngā pepa. Kāore e taea te manatoko i tētahi kereme "Tohu 0" kāore he paerewa kua whakahuatia.
Te Aroturuki: te wāhanga e ngāwari ana te peke atu
Ko te pono o tētahi tiwhikete whakatikatika ko te mekameka kei muri. Ko te taputapu e whakamahia ana hei ine i te pereti — he taumata hiko, he autocollimator, he interferometer laser — me whakatikatika e tētahi whare wānanga ine ine whaimana, ā, me whai i taua whakatikatika ki tētahi paerewa tuatahi ā-motu. I roto i te mahi, ko te tikanga o tēnei ko te tono mō:
- Ko te tiwhikete whakatikatika mō te pereti, te wāhanga rānei, e whakaatu ana ko tēhea paerewa (DIN/JIS/GB/ASME/me ētahi atu) i whakamahia.
- Ko te tiwhikete whakatikatika mō te taputapu ine i whakamahia, i tukuna e te whare wānanga ine ine whaimana.
- He kōrero mārama mō te koretake o te ine, kaua ko te māka paahi/rahunga anake.
Hei karo i tēnei mekameka, ko te āhua o te whakaputanga motuhake o ngā kereme "kua whaimanahia he Tau 0" e te wheketere, kāore he manatoko tuatoru - ehara i te mea tinihanga, engari kāore hoki i te whai tikanga motuhake.
He kōrero whai hua mā ngā tīma hokohoko
Mena kei te whakamaheretia ō taputapu mō ngā mākete kaweake maha, he pai ake te tono kia rua ngā whakatikatika — hei tauira, ngā tatauranga DIN 876 me JIS B 7513 — kaua e whakaaro he tika te whakamaoritanga o tētahi paerewa ki tētahi atu. He nui ake te utu mō te wā whakatikatika, engari ka whakakorea te koretake mō te kiritaki whakamutunga, inā koa i roto i ngā ahumahi pēnei i te hanga semiconductor me te hanga motuka, ka tono te tari kounga o te kaihoko whakamutunga mō ngā tuhinga motuhake mō te paerewa.
Wā tuku: Hurae-24-2026