Ukwazi ukucaciswa kwe-cmm

Iningi laboImishini ye-CMM (hlela imishini yokulinganisa) zenziwa nguizingxenye ze-granite.

Imishini yokulinganisa yokuhlanganisa (i-CMM) iyithuluzi lokulinganisa eliguquguqukayo futhi ithuthukise izindima eziningi ngendawo yokukhiqiza, kufaka phakathi ukusetshenziswa kwelebhu yekhwalithi yendabuko, kanye nendima yakamuva yokuxhasa ngokuqondile emafulethini eHarsher ezindaweni eziphansi. Ukuziphatha okushisayo kwesikali se-CMM Encoder kuba ukucatshangelwa okubalulekile phakathi kwezindima zalo.

Ku-athikili esanda kushicilelwa, ngeRenishaw, isihloko sezindlela ezintantayo nezinhlelo ezi-Encoder Scale ezikhuphukayo kuxoxwa ngazo.

Isikali se-encoder sisebenza ngempumelelo ngokuzimela kwe-substrate yabo ekhuphukayo (entanta) noma ukuncika kwe-substrate (kahle). Isikali esintantayo siyanda kanye nezinkontileka ngokuya ngezici ezishisayo zezinto ezisetshenziswayo, kanti isilinganiselo esandisiwe siyanda kanye nezinkontileka ngezinga elifanayo njenge-substrate eyisisekelo. Amasu wokulinganisa wokulinganisa avumelanisa izinzuzo ezahlukahlukene zezinhlelo zokusebenza ezahlukahlukene zokulinganisa: I-athikili evela ku-RengISHAW iletha icala lapho kungakhethwa khona isilinganiselo semishini yelebhu.

I-CMMS isetshenziselwa ukuthwebula idatha yokulinganisa enezici ezintathu ngokunemba okuphezulu, izakhi ezinemishini, njengamabhulokhi enjini kanye nama-jet injini blades, njengengxenye yenqubo yokulawulwa kwekhwalithi. Kunezinhlobo ezine eziyisisekelo zomshini wokulinganisa wokuxhumanisa: ibhuloho, i-cantilever, gantry nengalo evundlile. I-Bridge-Type CMMS iyindawo evame kakhulu. Ekwakhiweni kwebhuloho le-CMM, i-Z-axis quill ifakwe enqoleni ehamba ebhulohweni. Ibhuloho liqhutshwa eceleni kwezindlela ezimbili zokuqondisa ezindleleni zo-y-axis. Imoto ishayela ihlombe elilodwa lebhuloho, ngenkathi ihlombe eliphambene ngokwesiko lihlukaniswe kancane: Isakhiwo sebhuloho siqondiswa / sisekelwa emibonweni ye-aerostatic. Inqola (i-X-axis) ne-quill (i-z-axis) ingaqhutshwa ibhande, isikulufa noma imoto eqondile. I-CMMS yakhelwe ukunciphisa amaphutha angaphindaphindwayo njengoba lokhu kunzima ukunxephezela kumlawuli.

I-CMMS ephezulu ye-CMMS ihlanganisa umbhede omkhulu we-granite omkhulu we-granite kanye nesakhiwo se-gantry esiqinile / ibhuloho, eline-inertia quill enamathiselwe kufakwe inzwa yokulinganisa izici zomsebenzi. Idatha ekhiqizwayo esetshenziselwa ukuqinisekisa ukuthi izingxenye zihlangabezana nokubekezelela okumiselwe kusengaphambili. Ama-Encaders aqondile anembile afakwe ku-X, y kanye no-Z nama-AXES angaba amamitha amaningi amade emishini emikhulu.

I-CMM evamile ye-Granite Bridge-Type CMM isebenza egumbini elinomoya, elinokushisa okuphakathi kuka-20 ± 2 ° C, lapho izinga lokushisa lekamelo lihamba ngemijikelezo kathathu njalo ngehora, livumela i-high-suss granite ukuze ilondoloze izinga lokushisa eliphakathi lika-20 ° C. I-Encoder yensimbi Egcwele Eqinile Egcwele Efakwe E-Axis ngayinye ye-CMM bekungazimele kakhulu nge-granite substrate futhi uphendule ngokushesha ukuze ushintshe ngokushisa komoya ngenxa yenqwaba yetafula lamafutha. Lokhu kuzoholela ekunwetshisweni okuphezulu noma ukukhishwa kwesilinganiso ngaphezulu kwe-axis ejwayelekile ye-3M ye-60 μm. Lokhu kwandiswa kungakhiqiza iphutha lokulinganisa elinzima okunzima ukulinxephezela ngenxa yesikhathi sesikhathi esishintshashintshayo.

Isikali se-substrate masteried ukukhetha okukhethwayo kulokhu: isikali esilinganiselwe singakhula kuphela nge-coefficion ye-thermal (i-CTE) ye-granite substrate futhi, ngakho-ke, sikhombise ushintsho oluncane ngokuphendula ama-oscillation amancane okushisa komoya. Izinguquko zesikhathi eside kumazinga okushisa kufanele zithathwe futhi lezi zizothinta izinga lokushisa elijwayelekile le-substrate eningi eshisayo ephezulu. Isinxephezelo sokushisa siqondile njengoba isilawuli sidinga kuphela ukunxephezela ekuziphatheni okushisayo komshini ngaphandle kokucabanga ngokuziphatha okushisayo kwe-encoder.

Ngamafuphi, amasistimu e-encoder anesikali se-substrate mastered isixazululo esihle kakhulu sokunemba ama-CMM anezinto eziphansi ze-CTE / eziphakeme kakhulu ze-CTE / ezinye izicelo ezidinga ukusebenza kwamanani aphezulu. Izinzuzo zesikali esazi kahle zifaka ukwenziwa lula kwemibuso yenxephezelo ye-thermal kanye nokuncishiswa kwamaphutha wokulinganisa okungaphindwanga ngenxa, ngokwesibonelo, ukuhluka kwezinga lokushisa komoya endaweni yomshini wendawo.