ngā purongo

He aha tonu ngā ātete ā-ahu, ngā ā-taketake, me ngā ā-rohe?

 

In te whārikiI roto i te kōwhiringa me te tāutanga, he maha ngā wā ka tūtaki tātou ki ngā kupu hangarau "ngā ātete inenga," "ngā inenga taketake," me "ngā inenga rohe." He tino "hangarau" te tangi, engari he mea nui te mārama ki ēnei ariā hei whakapai ake i te tika o te huihuinga me te whakawhānui akete whārikite ora.

 

1. He aha te ine taketake?

 

Ko te ine taketake ko te ine ariā o tētahi wāhanga e tohua ana i ngā tuhi hoahoa; ka taea hoki te mārama ko te ine i raro i ngā "tikanga pai." Hei tauira, ki te tohua te diameter o roto o tētahi peera he 50mm, ko tēnei 50mm tōna ine taketake.

 

Koinei te tīmatanga mō te hoahoa;

 

Heoi, i roto i te mahi miihini tuturu, he uaua ki te whakatutuki i te tika 100%;

 

Nō reira, kei reira ngā "manawanuitanga" me ngā "ahu rohe".

 

2. He aha te manawanui ā-ahu?

 

E mōhio ana tātou katoa kāore e taea e te mīhini te whakatutuki i te "tika tino tika". Ahakoa ngā taputapu tino tika rawa, ka pāngia tonutia e tētahi taumata hapa. Ko te whānuitanga e whakaaetia ana mō tēnei hapa ko te ātete ā-ahu.

 

Te manawanui ā-ahu = Te uara peka o runga - Te uara peka o raro. Ka tohua te whānuitanga mōrahi e whakaaetia ana mō te piki me te heke o ngā ā-ahu o te wāhanga.

 

Hei tauira: Ko te rahi taketake o te kōhao he 50mm, ā, ko tōna awhe e whakaaetia ana ko +0.02 / -0.01mm, kātahi ko tōna manawanui ā-ahu ko 0.03mm.

 

Kāore ngā ātete e tohaina noatia; e ahu mai ana i ngā paerewa ā-motu (pēnei i te ISO, GB, me ētahi atu). He rerekē ngā whakaritenga tika mō ngā tohu ātete rerekē.

 

3. He aha ngā inenga rohe?

 

Ko ngā inenga rohe ko ngā rohe o runga me o raro o tētahi rahi i tatauhia i runga i te "rahi taketake" me te "manawanuitanga inenga".

 

Me te haere tonu me te tauira i runga ake nei:

Rahi taketake: 50mm

Ātete: +0.02/-0.01mm

Kātahi ko ōna whānuitanga rohe:

Te rahinga mōrahi = 50 + 0.02 = 50.02mm

Te rahinga iti rawa = 50 - 0.01 = 49.99mm

Arā, mēnā kei waenga i te 49.99mm me te 50.02mm te rahi tuturu, ka whakaarohia te wāhanga (he tika/he whakaaetia).

 

He aha te hiranga o ēnei inenga mō ngā peera?

 

He tino teitei ngā whakaritenga mō ngā rahinga tāutanga o ngā peera, hei wāhanga tino tika. Mā te nui rawa o ngā rerekētanga rahinga ka puta ngā raruraru e whai ake nei: Te nui rawa o te āputa: Ka pā ki te tika o te mahi, ā, ka puta te wiri; Te piri rawa o te urunga: Ka whakanui ake i te waku, ka wera rawa, ka mau rānei; Te tere o te kakahu: Ka whakaiti i te roa o te wā e mau ana te peera; Te uaua o te tāutanga: Ka pā ki te pai o te huihuinga me te utu.

 

Mā te mōhio ki tēnei mōhiotanga ka āwhina i a koe ki te whiriwhiri i ngā peera tika, engari ka karohia hoki ngā hapa huihuinga noa, kia maeneene ake ai, kia pono ake ai hoki te mahi a te mīhini!