Thermally kugadzikana kuvaka zvinhu.Ita shuwa kuti nhengo dzekutanga dzemuchina wekuvaka dzinosanganisira zvinhu zvisingatapurwe nekusiyana kwetembiricha.Funga nezvebhiriji (muchina X-axis), bhiriji rinotsigira, njanji (muchina Y-axis), mabearings uye Z-axis bar yemuchina.Izvi zvikamu zvinokanganisa zvakananga kuyerwa kwemuchina uye mafambiro, uye zvinoumba nhengo dzeCMM dzemusana.
Makambani mazhinji anogadzira zvinhu izvi kubva mualuminium nekuda kwehuremu hwayo, machinability uye mutengo wakaderera.Nekudaro, zvinhu zvakaita segranite kana ceramic zviri nani kune maCMM nekuda kwekusimba kwavo kwekupisa.Pamusoro peiyo chokwadi chekuti aluminium inowedzera zvakapetwa kana kupfuura granite, granite ine hunhu hwepamusoro hwekudedera uye inogona kupa yakanakisa kupedzisa kwepamusoro panogona kufamba nemabheya.Granite yave, chokwadi, yanga iri mwero unogamuchirwa nevakawanda wekuyera kwemakore.
Kune maCMM, zvisinei, granite ine imwe drawback-inorema.Dambudziko nderekukwanisa, kungave neruoko kana neservo, kufambisa granite CMM ichitenderedza pamasanhu ayo kutora zviyero.Rimwe sangano, The LS Starrett Co., yakawana mhinduro inofadza padambudziko iri: Hollow Granite Technology.
Iyi tekinoroji inoshandisa mahwendefa egranite akasimba uye matanda anogadzirwa uye anounganidzwa kuti agadzire nhengo dzisina kusimba.Aya makomba maumbirwo anorema kunge aruminiyamu achichengeta granite yakanaka yekupisa maitiro.Starrett inoshandisa tekinoroji iyi kune ese ari maviri bhiriji uye bhiriji inotsigira nhengo.Nenzira yakafanana, vanoshandisa ceramic isina mhango yebhiriji paCMM huru kana giraniti isina mhango isingashande.
Bearings.Vanenge vese vagadziri veCMM vakasiya masisitimu ekare ekutakura ma roller kumashure, vachisarudza kure-yepamusoro-inotakura mhepo masisitimu.Aya masisitimu haadi kubata pakati pekutakura uye kubereka pamusoro panguva yekushandiswa, zvichikonzera zero kupfeka.Pamusoro pezvo, mabearings emhepo haana zvikamu zvinofamba uye, saka, hapana ruzha kana vibrations.
Zvisinei, mabearings emhepo anewo misiyano yawo yomuzvarirwo.Zvakanaka, tsvaga sisitimu inoshandisa porous graphite seyakatakura zvinhu panzvimbo yealuminium.Iyo graphite iri mumabearings aya inobvumira mweya wakadzvanywa kuti upfuure zvakananga kuburikidza neakasikwa porosity inogara mugraphite, zvichikonzera mhepo yakapararira yakanyatso kupararira munzvimbo inotakura.Zvakare, iyo dhizaini yemhepo inogadzirwa neaya akaonda zvakanyanya-inenge 0.0002 ″.Zvakajairwa ported aruminiyamu mabearings, kune rumwe rutivi, kazhinji ane mhepo gap pakati pe0.0010 ″ uye 0.0030 ″.Mhepo diki yemhepo inodiwa nekuti inodzikisira maitiro emuchina wekusvetuka pacushion yemhepo uye zvinoguma nemuchina wakaoma, wakarurama uye unodzokororwa.
Manual vs. DCC.Kuona kana kutenga CMM yemanyorero kana otomatiki kwakatwasanuka.Kana nharaunda yako yekutanga yekugadzira yakanangana nekugadzirwa, saka kazhinji kacho yakananga komputa inodzorwa muchina ndiyo yako yakanakisa sarudzo mukufamba kwenguva, kunyangwe mutengo wekutanga uchave wakakwira.Manual CMMs akanakira kana achizoshandiswa zvakanyanya kune yekutanga-chinyorwa chekuongorora basa kana reverse engineering.Kana iwe ukaita zvakati wandei uye usingade kutenga michina miviri, funga nezve DCC CMM ine disengagable servo madhiraivha, ichibvumira kushandiswa kwemaoko kana zvichidikanwa.
Dhiraivha system.Paunenge uchisarudza DCC CMM, tsvaga muchina usina hysteresis (backlash) mudhiraivha system.Hysteresis inokanganisa kurongeka kwemuchina uye kudzokorora.Friction drives inoshandisa yakananga dhiraivha shaft ine chaiyo drive bhendi, zvichikonzera zero hysteresis uye kushoma vibration.
Nguva yekutumira: Jan-19-2022