Raupapa: He aha i hinga ai ngā mata wiri | Tuhinga 16
Ngā Kupumatua: RPM o te keri hē, tere o te mata keri, RPM o te mata keri HSS, tere tapahi keri, tere me te whāngai o te keri, diameter me te RPM o te mata keri, tere keri kowiri tira, whāngai mō ia hurihanga, kakahu o te mata keri, pakaru o te mata keri, whakapakeketanga o te kowiri tira, he aha i rahua ai ngā mata keri
Ka taea e te wiri te rahua wawe ina kore tōna tere e ōrite ki tōna whānui, ki te mea mahi me te whāngai. Me hono he tautuhinga RPM whai hua ki ngā mea e toru. Ko te huri noa i te mīhini kia tere ake, kia puhoi ake rānei, kāore e kī taurangi he pai ake te kōhao.
Ko te arotahi o tēnei tuhinga ko ngā wiri HSS e whakamahia ana i roto i te konganuku. Ko te tikanga o te HSS he maitai tere-rahi. Mā ngā uara tohutoro i raro nei ka whakamārama i ngā whanaungatanga; whiriwhiria ngā tautuhinga whakaputa mai i ngā raraunga mō te wiri me te rauemi tuturu.
1 Kia mārama ki te tere i mua i te whiriwhiri i te RPM
| Wā | Te tikanga o tēnei |
| Tere o te porowhita n i roto i te RPM | E hia ngā hurihanga e mahia ana e te wiri i ia meneti. |
| Tere tapahi Vc i roto i te m/min | Te tere o te mata tapahi i te diameter o waho o te wiri. |
| Te whānui D i roto i te mm | Whakamahia te whānui tapahi, kaua te whānui kakau kua whakaititia. |
I te RPM kotahi, he tere tapahi taha-waho teitei ake tō te wiri nui ake. I te 1,000 RPM, e 3.3 ngā wā o te tere tapahi o te wiri 10 mm i tō te wiri 3 mm. He uara tatau ēnei, ehara i te tautuhinga e taunakitia ana.
Pikitia 1 He rite te RPM, he rerekē ngā tere tapahi. I tatauhia mai i Vc = πDn / 1000.
2 Ka taea e te tere nui te whakapoto i te roa o te mahi keri
Tērā pea ka ngaro te mata o te wiri i mua i te whati. Ka taea e te tere nui me te korenga o te whāngai te whakapoto i te ora o te taputapu. Ka taea hoki e te tere nui te kino i ngā kokonga o waho. He mea nui anō hoki te tukunga o te whakamatao me te whiriwhiri i te wiri.
Tērā pea me nui ake te kaha e hiahiatia ana mō te taha kua pakaru kia mau tonu ai te tapahi. Mā te mahi tonu me te kore e tirotiro i te taha, ka huri pea te raruraru pakaru hei raruraru whati. Tuhia te pakaru o te wiri me te wāhi i tīmata ai te kino i mua i te whakatau he aha te mea hei whakarerekē.
3 Ehara i te mea he pai ake te puhoi i ngā wā katoa
Ka taea e te tere nui rawa, me te kore rawa o te tere o te keri te whai wāhi ki te pakaru. Kaua ngā keri iti i hangaia ki te kowiri tira e whakahaerehia aunoa i te RPM tino iti.
He raruraru whāngai anō hoki. I runga i te mīhini e pupuri ana i te whāngai i roto i te mm/min, mā te whakaiti i te RPM ka piki ake te tawhiti i nekehia mō ia hurihanga mēnā kāore te tautuhinga whāngai e huri. Ko te tauira i mahihia i runga itee whakaatu ana i raro nei he aha i hiranga ai tēnei.
Kāore e taea e te panoni tere te whakatika i tētahi mea mahi e kore e rere, i tētahi taha kua pakaru, i tētahi putorino kua ki tonu i ngā maramara. Me tirotirohia anō aua āhuatanga.
4 Me tapahi pai te maitai kore waikura
Ka taea e ngā maitai kore waikura austenitic pērā i te 304 me te 316 te whakapakeke i te wā e keri ana. Ko te whakapakeke i te tikanga o te whakapakari i puta mai i te whakarerekētanga kirihou. Kaua e whakaahuatia noa hei wera e whakapakeke ana i te maitai.
Kia mau tonu te whāngai tika, ā, kaua e noho roa, e mirimiri rānei i te wā e pā ana te wiri ki te rauemi. Me taea hoki e ngā maramara te puta i te kōhao. Me whai mata koi tēnei, he whāngai tika, ā, me tango pai ngā maramara. Ehara i te mea me whakamahi i te kaha mutunga kore.
Ki te huri tonu te wiri i te wāhi kotahi, me te kore e neke whakamua, e tango rānei i ngā rauemi, tirohia ngā āhuatanga tapahi me te āhua o te taha. Mā te mirimiri tonu ka uaua ake te tapahi e whai ake nei. Kaua e whakautu mā te whakanui ake i te pēhanga me te kore e kitea te take.
Te tikanga o tēnei i roto i te mahi
Whakaarohia te RPM hei wāhanga o te tukanga keri. Arotakehia te tere me te whāngai, te whakamatao me te tango maramara. Me whai tikanga whakahaere tika tonu te keri i hangaia tika; kāore hoki he raruraru tono e whakakore i te hapa hanga.
5 He tohutoro HSS mō te maitai kore waikura
Ko te whānuitanga tohutoro tere tapahi HSS whānui mō te maitai kore waikura he 30 ki te 50 putu mata ia meneti, he rite ki te 9.144 ki te 15.24 m/min. Ka hurihia e te ripanga i raro nei taua whānuitanga ki te RPM. Whakamahia hei mārama ki te pānga o te diameter ki te tere, kātahi ka tirohia ngā tautuhinga mō te wiri me te rauemi tuturu.
| Te whānui o te wiri | I te 9.144 m/min | I te 15.24 m/min |
| 3 mm | 970 RPM | 1,617 RPM |
| 6 mm | 485 RPM | 809 RPM |
| 10 mm | 291 RPM | 485 RPM |
| 13 mm | 224 RPM | 373 RPM |
Ripanga 1 RPM i tatauhia, i whakaawhiwhia ki te RPM katoa tata. Tahuritanga: 1 ft = 0.3048 m.
Pikitia 2 Ko te awhe tere-tapahi kotahi e hiahia ana kia iti ake te RPM i te pikinga ake o te diameter. Ko te awhi kua whakamarumaruhia he awhe tohutoro kua tatauhia, ehara i te rohe mahi haumaru kua whakamatautauria.
He whānuitanga tohutoro HSS whānui tēnei. Kāore e whakaratohia he tautuhinga motuhake mō ia momo kowiri tira, pakeke, paninga, kōhatu rānei HSS. Ehara ēnei uara i te tūtohutanga hua Jiacheng M35, M42 rānei.
Whakamahia ngā raraunga tuturu a te kaihanga keri i te tuatahi. Tirohia te kounga me te āhua o ngā rauemi, te hohonu o te kōhao, te whakamatao me te kaha o te mīhini. Kaua e tāruatia he tūtohi tere carbide ki tētahi keri HSS.
6 Whakatauritehia te RPM ki te whāngai
Ko te whāngai mō ia hurihanga ko te fn te tawhiti e nekehia ana e te keri i te hurihanga kotahi, i roto i te mm/hurihanga. Ko te tere whāngai ko te Vf te tawhiti e nekehia ana i roto i te meneti kotahi, i roto i te mm/min. Ko tō rāua whanaungatanga ko:
Vf= fnxn
Me kī kei te pupuri te mīhini i te tere whāngai i te 60 mm/min. Mā te whakarerekē i te RPM anake ka puta ngā uara e whai ake nei. He tauira tātai tēnei, ehara i te tūtohutanga keri.
| Tere o te porowhita | Tere whāngai | Whāngai mō ia hurihanga |
| 1,200 RPM | 60 mm/min | 0.05 mm/hurihuri |
| 600 RPM | 60 mm/min | 0.10 mm/hurihuri |
| 300 RPM | 60 mm/min | 0.20 mm/hurihuri |
Ripanga 2 I tatauhia mā te whakamahi i te fn = Vf / n. He rite tonu te tere whāngai o ngā rarangi e toru.
Pikitia 3 Me te whāngai kua whakaritea ki te 60 mm/min, mā te haurua o te RPM ka takirua te whāngai mō ia hurihanga. Ko te roa o te pae e whakaatu ana i te nekehanga tuaka mō ia hurihanga, ehara i te kaha tapahi.
Mā te whakaiti i te tere mai i te 600 ki te 300 RPM ka takirua te nekehanga whakamua mō ia hurihanga. Mēnā he teitei rawa taua uara hou mō te keri me te whakatūnga, ka taea tonu te uta nui. Mā te whakanui ake i te RPM me te pupuri tonu i te mm/min ka rerekē te pānga, ā, ka whakaitihia te nekehanga whakamua mō ia hurihanga.
Tirohia te whakahaere a te mīhini i te whāngai. Mēnā kua whakatakotoria te whāngai ki te mm/rev, ka huri te kaiwhakahaere i te mm/min me te RPM kia mau tonu ai te nekehanga kua tīpakohia mō ia hurihanga. Whakaūtia te aratau hohe me te whanonga o te mīhini i mua i te whakarerekētanga i ngā tautuhinga.
I runga i te wiri whāngai-ā-ringa, ehara te pēhanga i te tautuhinga whāngai kua whakatikatikaina. Kāore e taea te huri tika i ngā uara kua tatauhia i runga ake nei ki te kaha ā-ringa kua tūtohutia.
7 Tirohia ngā āhuatanga i mua i te whakapae i te RPM
He maha ngā take o tētahi tohu. Whakamahia ēnei tirotiro hei ārahi i tētahi rangahau; kāore te ripanga e tautuhi i tētahi mahi werowero i rahua.
| Raru i kitea | Ngā haki hei whakauru |
| Te poto o te ora o te taputapu | Te tere, te whāngai, te kōwhiringa keri me te taenga atu o te wai whakamatao ki te pūwāhi. |
| Ngā kokonga o waho kua pakaru | Te tere rawa, te wai whakamatao me ngā wāhi mārō o te mea mahi. |
| Pakaru ohorere | Te tākai maramara, te whāngai nui rawa, te taha kua pakaru me te whakapūmau mau. |
| Kōhao nui rawa | Te pokapū o te pūwāhi, te āhua o te poupou me te nekehanga o te rauemi mahi. |
Mō ngā kaihoko me ngā kaituku, tuhia te kounga me te āhua o ngā rauemi, te tauira keri me te whānui, te hohonu o te kōhao, ngā taputapu, te RPM whakahaere, te tikanga whāngai me te whakamatao. Tāpirihia he whakaahua mārama o te mata tapahi, ngā maramara me te wāhanga pakaru. Mā tēnei ka hoatu he taunakitanga whai hua ki te kaiwhakarato hei whakataurite tika.
Ko ngā kaiwhakarato tonu te kawenga mō ngā rauemi, te maimoatanga wera, te āhua me te ōritetanga o ngā puranga. Mā ngā aratohu tono mārama ka āwhina i ngā kiritaki ki te huri i taua kounga hua hei mahi keri auau.
Mō tēnei raupapa
He raupapa hangarau a Why Drill Bits Fail nā tā mātou tīma hanga i tuhi. E arotahi ana ia tuhinga ki tētahi āhuatanga motuhake o te mahi a te mata o te wiri - mai i ngā rauemi mata ki te takai. He māmā noa te whāinga: āwhina i ngā kaihoko ki te mārama ki tā rātou e hoko ana, me ngā pātai hei pātai.
Ngā tuhipoka tatau
Ka tātaihia ngā tohu tūtohi me ngā uara RPM katoa, ehara i te mea ka inehia ngā hua mahi. Ka whakamahia e ngā whārite te D i roto i te mm, te Vc i roto i te m/min, te n i roto i te RPM, te fn i roto i te mm/rev me te Vf i roto i te mm/min.
Wā tuku: Whiringa-ā-rangi-03-2026