Imithombo yeempazamo ezingaguqukiyoUmatshini wokulinganisa oQokelelweyoikakhulu ziquka: impazamo yoMshini woKulinganisa oQokelelweyo ngokwawo, njengempazamo yendlela yokuqondisa (umgca othe tye, ukujikeleza), ukuguqulwa kwenkqubo yokulungelelanisa ireferensi, impazamo yeprobe, impazamo yobungakanani obuqhelekileyo; impazamo ebangelwe zizinto ezahlukeneyo ezinxulumene neemeko zokulinganisa, njengempembelelo yendawo yokulinganisa (ubushushu, uthuli, njl.njl.), impembelelo yendlela yokulinganisa kunye nempembelelo yezinye izinto ezingaqinisekanga, njl.njl.
Imithombo yeempazamo yomatshini wokulinganisa i-coordinate iyinkimbinkimbi kangangokuba kunzima ukuyifumana nokuyihlula nganye nganye kwaye uyilungise, kwaye ngokubanzi kuphela yimithombo yeempazamo enempembelelo enkulu ekuchanekeni komatshini wokulinganisa i-coordinate kunye naleyo kulula ukuyihlula iyalungiswa. Okwangoku, eyona mpazamo iphandwe kakhulu yimpazamo yendlela yokusebenza yomatshini wokulinganisa i-coordinate. Uninzi lwee-CMM ezisetyenziswa kwimveliso zii-orthogonal coordinate system CMMs, kwaye kwii-CMMs eziqhelekileyo, impazamo yendlela yokusebenza ibhekisa kakhulu kwimpazamo yecandelo lentshukumo emgceni, kubandakanya impazamo yokubeka indawo, impazamo yokunyakaza ngokuthe tye, impazamo yokunyakaza kwe-angular, kunye nempazamo yokuma ngxi.
Ukuvavanya ukuchaneka kweumatshini wokulinganisa olungelelanisiweyookanye ukuze kuphunyezwe ukulungiswa kweempazamo, imodeli yempazamo engaphakathi yomatshini wokulinganisa i-coordinate isetyenziswa njengesiseko, apho kufuneka kunikwe inkcazo, uhlalutyo, udluliselo kunye nempazamo iyonke yento nganye yempazamo. Oko kubizwa ngokuba yimpazamo iyonke, ekuqinisekisweni kokuchaneka kwee-CMM, kubhekisa kwimpazamo edibeneyo ebonisa iimpawu zokuchaneka kwee-CMM, oko kukuthi, ukuchaneka kokubonisa, ukuchaneka kokuphindaphinda, njl.njl.: kubuchwepheshe bokulungisa iimpazamo zee-CMM, kubhekisa kwimpazamo yevektha yamanqaku endawo.
Uhlalutyo lweempazamo zendlela yokusebenza
Iimpawu zendlela yokusebenza yeCMM, ireli yesikhokelo inciphisa iidigri ezintlanu zenkululeko kwinxalenye ekhokelwa yiyo, kwaye inkqubo yokulinganisa ilawula idigri yesithandathu yenkululeko kwicala lentshukumo, ngoko ke indawo yenxalenye ekhokelwayo esithubeni imiselwa yireli yesikhokelo kunye nenkqubo yokulinganisa eyiyo.
Uhlalutyo lweempazamo zeprobe
Kukho iintlobo ezimbini ze-CMM probes: ii-contact probes zahlulwe zibe ziindidi ezimbini: i-switching (ekwaziwa ngokuba yi-touch-trigger okanye i-dynamic signaling) kunye ne-scanning (ekwaziwa ngokuba yi-proportional okanye i-static signaling) ngokwesakhiwo sazo. Iimpazamo ze-switching probe ezibangelwa yi-switch stroke, i-probe anisotropy, i-switch stroke dispersion, i-reset dead zone, njl. njl. Impazamo ye-scanning probe ebangelwa yi-force a displacement relationship, i-displacement a displacement relationship, i-cross-coupling interference, njl.
Ukubetheka kweprobe yokutshintsha iprobe kunye nokudibana kweprobe kunye ne-workpiece ukuya kwi-probe hair hearing, ukuphambuka kweprobe komgama. Le yimpazamo yenkqubo yeprobe. I-anisotropy yeprobe kukungangqinelani kwe-switching stroke kuzo zonke iindlela. Yimpazamo ecwangcisiweyo, kodwa idla ngokuphathwa njengempazamo engacwangciswanga. Ukuqhekeka kokuhamba kweswitshi kubhekisa kwinqanaba lokusasazeka kokuhamba kweswitshi ngexesha lokulinganisa okuphindaphindiweyo. Umlinganiselo wokwenyani ubalwa njengokuphambuka okuqhelekileyo kokuhamba kweswitshi kwicala elinye.
Ukuseta kwakhona i-deadband kubhekisa ekuphambukeni kwentonga yeprobe kwindawo yokulingana, susa amandla angaphandle, intonga kwindawo yokuseta kwakhona amandla entwasahlobo, kodwa ngenxa yendima yokungqubana, intonga ayinakubuyela kwindawo yokuqala, kukuphambuka kwindawo yokuqala yi-deadband yokuseta kwakhona.
Impazamo edibeneyo enxulumeneyo yeCMM
Impazamo ebizwa ngokuba yi-relative integrated error ngumahluko phakathi kwexabiso elilinganisiweyo kunye nexabiso lokwenyani lomgama wenqaku ukuya kwinqanaba kwindawo yokulinganisa ye-CMM, enokubonakaliswa ngale fomyula ilandelayo.
Impazamo edibeneyo enxulumeneyo = ixabiso lokulinganisa umgama ixabiso lokwenyani lomgama
Ukuze kwamkelwe i-CMM quota kunye nokulinganiswa rhoqo, akufuneki ukwazi ngokuchanekileyo impazamo yendawo nganye kwindawo yokulinganisa, kodwa kuphela ukuchaneka komsebenzi wokulinganisa i-coordinate, onokuvavanywa yimpazamo edibeneyo yeCMM.
Impazamo edibeneyo ehambelanayo ayibonisi ngqo umthombo wempazamo kunye nempazamo yokugqibela yokulinganisa, kodwa ibonisa kuphela ubungakanani bempazamo xa kulinganiswa ubukhulu obunxulumene nomgama, kwaye indlela yokulinganisa ilula kakhulu.
Impazamo yevektha yesithuba yeCMM
Impazamo yevektha yesithuba ibhekisa kwimpazamo yevektha nangaliphi na ixesha kwindawo yokulinganisa yeCMM. Ngumahluko phakathi kwayo nayiphi na indawo esisigxina kwindawo yokulinganisa kwinkqubo efanelekileyo yokulungelelanisa i-engile yasekunene kunye nee-coordinates ezinemilinganiselo emithathu ezihambelanayo kwinkqubo yokulungelelanisa yokwenyani esekwe yiCMM.
Ngokwethiyori, impazamo yevektha yesithuba yimpazamo yevektha ebanzi efunyenwe ngokwenziwa kwevektha yazo zonke iimpazamo zelo nqanaba lesithuba.
Ukuchaneka kokulinganisa kweCMM kufuna kakhulu, kwaye ineendawo ezininzi kunye nesakhiwo esintsonkothileyo, kunye nezinto ezininzi ezichaphazela impazamo yokulinganisa. Kukho imithombo emine ephambili yeempazamo ezingashukumiyo kwiimashini ezine-axis ezininzi ezifana neCMMs ngolu hlobo lulandelayo.
(1) Iimpazamo zejiyometri ezibangelwa kukuchaneka okulinganiselweyo kweendawo zokwakha (ezifana nezikhokelo kunye neenkqubo zokulinganisa). Ezi mpazamo zimiselwa kukuchaneka kokwenziwa kwezi ndawo zokwakha kunye nokuchaneka kokulungiswa kokufakelwa nokugcinwa kwazo.
(2) Iimpazamo ezinxulumene nokuqina okulinganiselweyo kweendawo ze-mechanism ze-CMM. Zibangelwa kakhulu bubunzima beendawo ezihambayo. Ezi mpazamo zimiselwa bukuqina kweendawo zesakhiwo, ubunzima bazo kunye nokwakheka kwazo.
(3) Iimpazamo zobushushu, ezinje ngokwandiswa nokugoba kwesikhokelo okubangelwa kukutshintsha kobushushu obunye kunye ne-gradients yobushushu. Ezi mpazamo zimiselwa bulwakhiwo lomatshini, iimpawu zezinto kunye nokusasazwa kobushushu be-CMM kwaye zichatshazelwa yimithombo yobushushu yangaphandle (umz. ubushushu obungqongileyo) kunye nemithombo yobushushu yangaphakathi (umz. iyunithi yokuqhuba).
(4) iimpazamo zeprobe kunye nezezixhobo, ikakhulu eziquka utshintsho kwirediyasi yesiphelo seprobe olubangelwa kukutshintshwa kweprobe, ukongezwa kwentonga ende, ukongezwa kwezinye izixhobo; impazamo ye-anisotropic xa iprobe ichukumisa umlinganiselo kwiindlela ezahlukeneyo kunye neendawo; impazamo ebangelwe kukujikeleza kwetafile yokukhomba.
Ixesha lokuthumela: Novemba-17-2022