Te nuinga oNgā mīhini Cmm (ngā mīhini ine taunga) e hangaia ana engā wāhanga karāhe.
He taputapu ine ngāwari te Mīhini Ine Taurite (CMM), ā, kua whanakehia e ia ētahi mahi ki te taiao hanga, tae atu ki te whakamahinga i roto i te taiwhanga kounga tuku iho, me te mahi hou ake nei o te tautoko tika i te hanga i runga i te papa hanga i roto i ngā taiao uaua. Ko te whanonga wera o ngā tauine waehere CMM ka noho hei whakaaro nui i waenga i ōna mahi me te tono.
I roto i tētahi tuhinga nā Renishaw i whakaputaina tata nei, ka matapakihia te kaupapa o ngā tikanga whakairi tauine encoder mānu me te matatau.
Ko ngā tauine whakakōwaea he mea motuhake i te pāmahana o te papa whakairi (mānu) he mea whakawhirinaki rānei ki te pāmahana o te papa whakairi (kua whakamātauhia). Ka whānui, ka whakawhāiti te tauine mānu i runga i ngā āhuatanga pāmahana o te rauemi tauine, engari ko te tauine kua whakamātauhia ka whānui, ka whakawhāiti i te tere rite ki te papa whakairi. He maha ngā painga o ngā tikanga whakairi tauine ine mō ngā tono ine rerekē: e whakaatu ana te tuhinga mai i Renishaw i te take e pai ake ai te tauine kua whakamātauhia mō ngā mīhini taiwhanga.
Ka whakamahia ngā CMM hei hopu raraunga ine-toru-ahu i runga i ngā wāhanga miihini tino tika, pērā i ngā poraka miihini me ngā mata miihini jet, hei wāhanga o te tukanga whakahaere kounga. E whā ngā momo taketake o te mīhini ine taunga: te piriti, te cantilever, te gantry me te ringa whakapae. Ko ngā CMM momo piriti te mea tino noa. I roto i te hoahoa piriti CMM, ka whakanohoia he quill tuaka-Z ki runga i te kaata e neke ana i te piriti. Ka peia te piriti i runga i ngā ara ārahi e rua i te ahunga tuaka-Y. Ka peia e te motuka tetahi pakihiwi o te piriti, ko te pakihiwi ke ia kāore i te peia: ko te hanganga piriti ka arahina/tautokohia i runga i ngā peera aerostatic. Ka taea te peia te kaata (tuaka-X) me te quill (tuaka-Z) e te whitiki, te tīwiri, te motuka raina rānei. Kua hangaia ngā CMM hei whakaiti i ngā hapa kāore e taea te whakahoki mai nā te mea he uaua ki te whakatika i roto i te kaiwhakahaere.
Kei roto i ngā CMM mahi-teitei he moenga karāhe taumaha-wera teitei me te hanganga gantry/piriti pakari, me te pene iti-inertia e piri ana ki reira he pūoko hei ine i ngā āhuatanga o te wahi mahi. Ka whakamahia ngā raraunga kua whakaputaina hei whakarite kia tutuki ngā wāhanga i ngā manawanui kua whakaritea. Ka tāutahia ngā encoder raina tino tika ki runga i ngā tuaka X, Y me Z motuhake, ka maha mita te roa i runga i ngā mīhini nui ake.
Ko te CMM momo piriti karāhe noa e whakahaerehia ana i roto i tētahi rūma hauhautanga, me te pāmahana toharite o te 20 ±2 °C, e toru ngā huringa pāmahana o te rūma i ia hāora, ka taea e te karāhe taumaha wera nui te pupuri i te pāmahana toharite pumau o te 20 °C. Ko tētahi encoder maitai kore waikura raina mānu e tāuta ana ki ia tuaka CMM ka tino motuhake i te papa karāhe, ā, ka tere te urupare ki ngā huringa o te pāmahana hau nā te mea he nui te kawe wera me te iti o te papatipu wera, he iti iho i te papatipu wera o te tēpu karāhe. Ka arahi tēnei ki te whānui, ki te whakaheke rānei i te tauine ki runga i te tuaka 3m noa o te 60 µm. Ka taea e tēnei whānui te whakaputa i tētahi hapa ine nui e uaua ana ki te whakatika nā te mea he rerekē te āhua o te wā.
Ko te tauine matua o te papa te mea pai rawa atu i tēnei wā: ka whānui noa te tauine matua me te tauwehenga whānui wera (CTE) o te papa karāhe, ā, nō reira, kāore e nui te huringa hei whakautu ki ngā wiri iti o te pāmahana hau. Me whai whakaaro tonu ki ngā huringa pāmahana mō te wā roa, ā, ka pā ēnei ki te pāmahana toharite o te papa papatipu wera nui. He māmā noa te utu pāmahana nā te mea me utu noa e te kaiwhakahaere te whanonga wera o te mīhini me te kore e whai whakaaro ki te whanonga wera o te tauine encoder.
Hei whakarāpopototanga, he otinga pai rawa atu ngā pūnaha encoder me ngā tauine matua o te papa mō ngā CMM tino tika me ngā papa iti o te CTE / te papatipu wera nui me ētahi atu tono e hiahia ana ki ngā taumata teitei o te mahi ine. Ko ngā painga o ngā tauine matua ko te whakangawari i ngā tikanga utu wera me te kaha ki te whakaiti i ngā hapa ine kāore e taea te whakahoki nā te mea, hei tauira, ngā rerekētanga pāmahana hau i roto i te taiao mīhini o te rohe.
Te wā tuku: Hakihea-25-2021