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1、第49卷第19期機(jī)械工程學(xué)報(bào)Vol.49No.192013年10月JOURNALOFMECHANICALENGINEERINGOct.2013DOI：10.3901/JME.2013.19.133*復(fù)雜曲面零件加工精度的原位檢測(cè)誤差補(bǔ)償方法12311高健陳岳坪鄧海祥楊澤鵬陳新(1.廣東工業(yè)大學(xué)機(jī)械裝備制造與控制技術(shù)教育部重點(diǎn)實(shí)驗(yàn)室廣州510006；2.廣西科技大學(xué)廣西汽車零部件與整車技術(shù)重點(diǎn)實(shí)驗(yàn)室柳州545006；3.廣東工業(yè)大學(xué)實(shí)驗(yàn)教學(xué)部廣州510006)摘要：為提高復(fù)雜曲面零件的數(shù)控機(jī)床原位檢測(cè)精度，分析影響接觸式檢測(cè)
2、系統(tǒng)精度的各項(xiàng)因素及其誤差補(bǔ)償方法。對(duì)檢測(cè)系統(tǒng)的主要誤差來源如機(jī)床幾何誤差、測(cè)頭預(yù)行程誤差和測(cè)頭半徑誤差進(jìn)行分析研究。在對(duì)數(shù)控機(jī)床的幾何誤差進(jìn)行分析和建模的基礎(chǔ)上，采用激光干涉儀進(jìn)行三軸數(shù)控機(jī)床的單項(xiàng)誤差測(cè)量和補(bǔ)償；針對(duì)測(cè)頭檢測(cè)過程中存在的預(yù)行程誤差，提出基于徑向基函數(shù)(Radialbasisfunction,RBF)的預(yù)行程誤差預(yù)測(cè)方法，獲得測(cè)頭預(yù)行程誤差分布圖，并對(duì)檢測(cè)系統(tǒng)進(jìn)行實(shí)時(shí)預(yù)行程誤差的補(bǔ)償；提出改進(jìn)的三角網(wǎng)格模型頂點(diǎn)法矢計(jì)算方法，有效進(jìn)行三維測(cè)頭的半徑補(bǔ)償。通過實(shí)例零件的加工精度原位檢測(cè)試驗(yàn)及其與三坐標(biāo)測(cè)量機(jī)C
3、MM檢驗(yàn)結(jié)果的比較，驗(yàn)證了原位檢測(cè)方法的有效性。關(guān)鍵詞：原位檢測(cè)誤差補(bǔ)償加工精度復(fù)雜曲面數(shù)控機(jī)床中圖分類號(hào)：TP391In-situInspectionErrorCompensationforMachiningAccuracyImprovementofComplexComponents12311GAOJianCHENYuepingDENGHaixiangYANGZepengCHENXin(1.KeyLaboratoryofMechanicalEquipmentManufacturing&ControlTechnologyo
4、fMinistryofEducation,GuangdongUniversityofTechnology,Guangzhou510006;2.GuangxiKeyLaboratoryofAutomobileComponentsandVehicleTechnology,GuangxiUniversityofScienceandTechnology,Liuzhou545006;3.DepartmentofExperimentTeaching,GuangdongUniversityofTechnology,Guangzhou51
5、0006)Abstract：Inordertoimprovein-situinspectionaccuracyofcomplexsurfacecomponents,errorfactorsinfluencingtheinspectionaccuracyoftheon-machineinspectionsystemarediscussedanderrorcompensationmethodsarestudied.Themainerrorsoftheinspectionsystemareanalyzedwhichcontain
6、geometricerrorofmachinetools,pre-travelerroroftheinspectionsystemandradiuserrorofmeasuringprobe.Thegeometricerrormodelofathree-axisnumericalcontrolmachinetoolisestablishedandeachindividualerrorvalueisidentifiedandobtainedthroughlaserinterferometer.Forthepre-travel
7、erroroftheinspectionsystem,aradialbasisfunctionalgorithmbasedpredictionmethodisproposedandimplemented.Basedonthedistributionofthepre-travelprobeerrorobtained,anreal-timecompensationoftheerrorcanbeperformedduringtheactualinspectionprocess.Consideringtheproberadiusa
8、nditscompensationofthecontact-typemeasuringsystem4,anewalgorithmisdevelopedtoimprovethecalculationaccuracyofthenormalvectorwhichwillaffectthecompensatio
