I ngā tau tata nei, kua tīmata te hapori ine ine ahumahi ki te aro nui atu ki tētahi āhuatanga iti noa iho o ngā pereti mata tika o te karāhe: arā, ko te whakakoi i te taha. Ahakoa ko te papatahi, te matotoru, me te kaha kawenga te mea nui rawa atu i ngā kōrero, kei te whakanui ngā tohunga i nāianei ka taea e ngā taha o ēnei taputapu tino tika te pā nui ki te haumaru, te roa, me te whakamahinga.
Ko ngā pereti mata tino tika o te karāhe te poutokomanawa o te ine ahumahi, e whakarato ana i ngā mata tohutoro pumau me te tika. Mēnā ka waiho kia koi ngā taha o ēnei pereti, ka tūpono he mōrearea i te wā e whakahaeretia ana, e kawehia ana hoki. E whakaatu ana ngā pūrongo mai i ētahi awheawhe hangahanga kua āwhina ngā taha kua whakapikohia—ngā kokonga iti kua pikohia, kua porowhita rānei—ki te whakaiti i ngā aituā me te kino ki ngā pereti.
E kī ana ngā tohunga o te umanga, ehara i te mea he mahi haumaru anake te whakakoi. "Ka tiakina e te taha whakakoi te kounga o te karāhe," te kī a tētahi miihini ine ine matua. "Ahakoa he maramara kokonga iti noa iho, ka taea e ia te whakararu i te roa o te ora o te pereti, ā, i roto i ngā tono tino tika, ka pā pea ki te pono o te ine."
Ko ngā whakatakotoranga chamfer noa, pērā i te R2 me te R3, he paerewa i roto i te maha o ngā awheawhe. Ko te R2 e pā ana ki te radius 2mm i te taha, e whakamahia ana mō ngā pereti iti ake, mō ngā taiao iti te nekehanga rānei. Ko te R3, he radius 3mm, e pai ake ana mō ngā pereti nui ake, taumaha ake e whakamahia pinepine ana. E taunaki ana ngā tohunga kia whiriwhiria te rahi o te chamfer i runga i ngā rahi o te pereti, te auau o te whakahaere, me ngā whakaritenga haumaru o te wāhi mahi.
E whakaatu ana ngā rangahau hou i roto i ngā taiwhanga ahumahi he iti ake ngā pakaru tūpono o ngā pereti he tapa porotaka, ā, he iti ake hoki ngā utu tiaki. Haunga te pakari, ka whakapai ake hoki ngā taha porotaka i te ergonomics i te wā e hiki ana me te tāuta ana, kia maeneene ake ai te rere o te mahi i roto i ngā raina whakaputa pukumahi.
Kua tīmata ngā mana whakahaere haumaru ki te whakauru i ngā aratohu chamfer ki roto i ngā paerewa ā-roto. I roto i ētahi wheketere o Ūropi me Amerika Te Raki, he mahi e taunakihia ana ngā taha chamfer mō ngā pereti mata karāhe katoa e neke atu ana i ētahi rahinga.
Ahakoa e whakaarohia ana e ētahi he mea iti noa te whakakoi taha, e whakanui ana ngā kaihanga i tōna hiranga e tipu haere ana i roto i te inenga o ēnei rā. I te mea e hiahiatia ana te tika me te whai huatanga e ngā tukanga ahumahi, ka taea e te aro ki ngā āhuatanga pēnei i te whakakoi taha te hanga i tētahi rerekētanga nui.
E matapaetia ana e ngā kaitātari, i te whanaketanga tonu o te umanga ine ine, ka whānui haere te kōrero mō ngā taha pereti. E ai ki ngā rangahau, mā te whakakotahi i ngā taha kua whakapikohia me ētahi atu āhuatanga tiaki, pērā i ngā taputapu whakahaere tika me ngā tautoko rokiroki, ka whai wāhi nui ki te roa o te ora me te pono o ngā pereti tika o te karāhe.
Hei whakamutunga, ko te whakakoi – he mahi iti noa iho i mua – kua puta ake hei āhuatanga hoahoa matua i roto i te hanga me te tiaki i ngā pereti mata tino tika o te karāhe. Ahakoa he whakakoi R2, he R3 rānei te whiriwhiri, kei te kitea e ngā kaiwhakamahi ahumahi he iti noa te whakatikatika ka taea te whakarato i ngā painga tūturu mō te haumaru, te roa, me te whai huatanga o te mahi.
Wā tuku: Hepetema-25-2025