The static error sources yeCoordinate Measuring Machinekunyanya zvinosanganisira: kukanganisa kweCoordinate Measuring Machine pachayo, sekukanganisa kwenzira yekufambisa (yakatwasuka mutsara, kutenderera), deformation yereferensi coordinate system, kukanganisa kweprobe, kukanganisa kwehuwandu hwehuwandu;kukanganisa kunokonzerwa nezvinhu zvakasiyana-siyana zvine chokuita nemamiriro ekuyera, zvakadai sekukanganiswa kwemamiriro ekuyera (tembiricha, guruva, nezvimwewo), pesvedzero yenzira yekuyera uye pesvedzero yezvimwe zvinhu zvisina chokwadi, nezvimwe.
Iwo ekukanganisa masosi emuchina wekuyeresa akaomesesa zvekuti zvinonetsa kuona nekuzviparadzanisa imwe neimwe nekuzvigadzirisa, uye kazhinji chete izvo zvisizvo zvisizvo zvine simba guru pakurongeka kwemushini wekuyeresa uye izvo zviri nyore kuita. zvakasiyana zvinogadziriswa.Parizvino, chikanganiso chakanyanya kutsvagirwa ikanganiso yemuchina wekubatanidza muchina wekuyeresa.Mazhinji eCMM anoshandiswa mukugadzira maitiro ndeye orthogonal coordinate system CMMs, uye kune akajairwa maCMM, iko kukanganisa kwemeshini inonyanya kureva mutsara wechikamu chechikamu chikanganiso, kusanganisira kukanganisa kwekumisikidza, kutwasanuka kwekufamba kukanganisa, angular motion kukanganisa, uye perpendicularity kukanganisa.
Kuongorora chokwadi chekurongedza muchina wekuyeresakana kuita kugadzirisa kukanganisa, modhi yechikanganiso chemushini wekuyeresa unoshandiswa sehwaro, umo tsananguro, kuongorora, kutapurirana uye kukanganisa kwakazara kwechimwe chinhu chikanganiso chinofanira kupihwa.Iko kunonzi kukanganisa kwakazara, mukusimbisa kwechokwadi kweCMM, kunoreva kukanganisa kwakasanganiswa kunoratidza huchokwadi hunhu hweCMMs, kureva, chiratidzo chechokwadi, kudzokorora chokwadi, nezvimwewo: mune yekukanganisa kururamisa tekinoroji yeCMM, inoreva iyo vector kukanganisa kwenzvimbo dzenzvimbo.
Mechanism kukanganisa kuongororwa
Mamichina maitiro eCMM, njanji inodzika madhigirii mashanu erusununguko kune chikamu chinotungamirwa nayo, uye iyo yekuyera sisitimu inodzora danho rechitanhatu rerusununguko munzira yekufamba, saka chinzvimbo chechikamu chinotungamirwa muchadenga chinotemerwa ne gwara renjanji uye hurongwa hwekuyera kwairi.
Kuongorora kukanganisa
Kune mhando mbiri dzeCMM probes: yekuonana probes yakakamurwa kuita mapoka maviri: switching (inozivikanwawo seyekubata-inokonzeresa kana dynamic siginecha) uye scanning (inozivikanwawo seyakaenzana kana static kusaina) zvinoenderana nechimiro chavo.Kuchinja kukanganisa kweprobe kunokonzerwa nekuchinja sitiroko, probe anisotropy, switch stroke dispersion, reset zone dead, etc.
The switching stroke of the probe for the probe and workpiece contact to the probe hair hearing, probe deflection of a distance.Uku ndiko kukanganisa kwehurongwa hweprobe.The anisotropy of the probe is inconcentration of the switching stroke in all directions.Iko kukanganisa kwakarongeka, asi kazhinji kunotorwa sechikanganiso chisina kujairika.Kuora kwekufamba kwekuchinja kunoreva mwero wekupararira kwekufamba kwekuchinja panguva yekuyerwa kwakadzokororwa.Chiyero chaicho chinoverengerwa sekutsauka kwakajairwa kwekufamba kwechinja mune imwe nzira.
Reset deadband inoreva probe tsvimbo kutsauka kubva panzvimbo yakaenzana, bvisa simba rekunze, tsvimbo muchirimo simba reset, asi nekuda kwebasa rekukweshana, tsvimbo haigone kudzoka panzvimbo yekutanga, ndiko kutsauka kubva chepakutanga chinzvimbo ndiyo reset deadband.
Chikanganiso chakabatanidzwa cheCMM
Iyo inonzi hama yakabatanidzwa kukanganisa ndiyo mutsauko pakati peyero yakayerwa uye kukosha kwechokwadi kwenzvimbo-ku-point kureba munzvimbo yekuyera yeCMM, iyo inogona kuratidzwa neinotevera formula.
Relative integrated error = chinhambwe kuyerwa kukosha chinhambwe kukosha chaiko
Kuti CMM igamuchire quota uye kuenzanisa nguva nenguva, hazvifanirwe kunyatsoziva kukanganisa kweimwe neimwe nzvimbo munzvimbo yekuyerwa, asi chete iko kurongeka kweyero yekuyera workpiece, iyo inogona kuongororwa nekukanganisa kwakabatanidzwa kweCMM.
Chikanganiso chakabatanidzwa hachiratidzi zvakananga kunobva kukanganisa uye chikanganiso chekuyerwa kwekupedzisira, asi chinongoratidza hukuru hwechikanganiso kana uchiyera zviyero zvine chekuita nedaro, uye nzira yekuyera iri nyore.
Space vector kukanganisa kweCMM
Space vector kukanganisa inoreva kukanganisa kwevector chero nguva munzvimbo yekuyera yeCMM.Ndiwo mutsauko pakati penzvimbo ipi neipi yakagadziriswa munzvimbo yekuyera mune yakanaka-ekona yekubatanidza system uye inoenderana-matatu-dimensional coordinates mune chaiyo coordination system yakagadzwa neCMM.
Tichifunga, iyo space vector kukanganisa ndiyo yakazara vector kukanganisa yakawanikwa nevector synthesis yezvikanganiso zvese zvenzvimbo iyoyo.
Iko kuyerwa kwechiyero cheCMM kuri kudiwa zvakanyanya, uye ine zvikamu zvakawanda uye yakaoma chimiro, uye zvinhu zvakawanda zvinokanganisa kuyerwa kukanganisa.Kune mana makuru masosi ekukanganisa kwakamira mumashini akawanda-axis seCMMs seanotevera.
(1) Zvikanganiso zveGeometric zvinokonzerwa nekusakwana kwakakwana kwezvikamu zvekugadzirisa (zvakadai semitungamiri uye maitiro ekuyera).Izvi zvikanganiso zvinogadziriswa nekugadzirwa kwechokwadi kwezvikamu izvi zvekugadzirisa uye kugadziriswa kwekugadzirisa mukugadzirisa nekugadzirisa.
(2) Zvikanganiso zvine chekuita nekuomarara kwekupedzisira kwemeshini zvikamu zveCMM.Izvo zvinonyanya kukonzerwa nekurema kwezvikamu zvinofamba.Izvi zvikanganiso zvinogadziriswa nekuoma kwezvikamu zvekugadzirisa, uremu hwavo uye kugadzirisa kwavo.
(3) Kukanganisa kwekupisa, sekuwedzera uye kukotama kwegwaro rinokonzerwa nekushanduka kwetembiricha imwe chete uye tembiricha.Mhosho idzi dzinotemerwa nechimiro chemuchina, zvinhu zvemukati uye kugovera tembiricha yeCMM uye zvinopesvedzerwa nekunze kwekunze kunopisa (eg ambient tembiricha) uye mukati kupisa masosi (eg drive unit).
(4) probe uye zvikanganiso zvekuwedzera, kunyanya kusanganisira shanduko muradius yemugumo weprobe inokonzerwa nekutsiviwa kweprobe, kuwedzerwa kwetsvimbo refu, kuwedzera kwezvimwe zvinhu;anisotropic kukanganisa kana probe inobata kuyerwa nenzira dzakasiyana uye nzvimbo;kukanganisa kwakakonzerwa nekutenderera kwetafura ye indexing.
Nguva yekutumira: Nov-17-2022