1, Ko te tukanga whiriwhiri o ngā kaitapahi mira e whai whakaaro ana ki ngā āhuatanga e whai ake nei hei whiriwhiri:
(1) Āhua wāhanga (me te whakaaro ki te kōtaha tukatuka): Ko te kōtaha tukatuka he papatahi, he hōhonu, he kōhao, he miro, me ētahi atu. He rerekē ngā taputapu e whakamahia ana mō ngā kōtaha tukatuka rerekē. Hei tauira, ka taea e te mīhini mira miro te mira i ngā mata pūkohu, engari kāore e taea te mira i ngā mata kōpiko.
(2) Rauemi: Whakaarohia tōna āheinga ki te miihini, te hanga maramara, te pakeke me ngā huānga whakarewa. Ko te tikanga, ka wehea e ngā kaihanga taputapu ngā rauemi ki te maitai, te maitai kore waikura, te rino maka, ngā konganuku kore-ferrous, ngā whakarewa super, ngā whakarewa titanium me ngā rauemi mārō.
(3) Ngā āhuatanga mīhini: Kei roto i ngā āhuatanga mīhini te pumau o te pūnaha mahi o te taputapu mīhini, te āhua o te pupuri o te pupuri taputapu, me ērā atu mea.
(4) Te pumau o te pūnaha taputapu mīhini-pūmau-pūnaha mahi: Me mārama ki te mana e wātea ana o te taputapu mīhini, te momo porowhita me ngā whakaritenga, te pakeke o te taputapu mīhini, me ētahi atu, me te roa o te iri o te kaipupuri taputapu me tōna āhua o te oma tuaka/whāiti.
(4) Kāwai tukatuka me te kāwai iti: Kei roto i tēnei ko te mira pakihiwi, te mira papatahi, te mira kōtaha, me ētahi atu, me whakakotahi ki ngā āhuatanga o te taputapu hei whiriwhiri taputapu.
2. Te kōwhiringa o te koki āhuahanga o te mīhini mira
(1) Te kōwhiringa o te koki o mua. Me whakatau te koki rake o te taputapu mira i runga i te rauemi o te taputapu me te mea mahi. He maha ngā pānga i te mira, nō reira me whakarite kia kaha ake te mata tapahi. I te nuinga o te wā, he iti ake te koki rake o te taputapu mira i te koki rake tapahi o te taputapu hurihuri; he nui ake te maitai tere-teitei i te taputapu carbide sima; hei tāpiri, i te mira rauemi kirihou, nā te nui o te whakarerekētanga tapahi, me whakamahi he koki rake nui ake; i te mira rauemi pakarukaru, me iti ake te koki rake; i te tukatuka rauemi he kaha me te pakeke teitei, ka taea hoki te whakamahi i te koki rake kino.
(2) Te kōwhiringa o te piko o te mata. Ko te koki porowhita β o te porowhita o waho o te mira mutunga me te taputapu mira porotaka ko te piko o te mata λ s. Mā tēnei ka taea e ngā niho taputapu te tapahi mārire ki roto, ki waho hoki i te mea mahi, ka whakapai ake i te maeneene o te mira. Ka taea e te whakanui ake i te β te whakanui ake i te koki rake tuturu, te whakakoi i te mata tapahi, me te whakangawari ake i te tuku maramara. Mō ngā taputapu mira he whānui mira whaiti, kāore i te nui te whakanui ake i te koki porowhita β, nō reira ko te β=0, he iti ake rānei te uara e tangohia ana.
(3) Te whiriwhiri i te koki piko matua me te koki piko tuarua. Ko te pānga o te koki tomo o te taputapu huri mata me tōna awe ki te tukanga huri he rite ki te koki tomo o te taputapu huri i te hurihanga. Ko ngā koki tomo e whakamahia whānuitia ana ko te 45°, 60°, 75°, me te 90°. He pai te pakari o te pūnaha tukanga, ā, ko te uara iti ka whakamahia; ki te kore, ko te uara nui ka whakamahia, ā, ko te kōwhiringa koki tomo ka whakaaturia i te Ripanga 4-3. Ko te koki piko tuarua ko te 5°～10° te tikanga. Ko te mata tapahi matua anake kei te taputapu huri porotaka, kāore he mata tapahi tuarua, nō reira kāore he koki piko tuarua, ā, ko te koki tomo he 90°.
Wā tuku: 24 o Ākuhata-2021
