复杂曲面零件加工精度的原位检测误差补偿方法_高健

《复杂曲面零件加工精度的原位检测误差补偿方法_高健》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、第49卷第19期机械工程学报Vol.49No.192013年10月JOURNALOFMECHANICALENGINEERINGOct.2013DOI：10.3901/JME.2013.19.133*复杂曲面零件加工精度的原位检测误差补偿方法12311高健陈岳坪邓海祥杨泽鹏陈新(1.广东工业大学机械装备制造与控制技术教育部重点实验室广州510006；2.广西科技大学广西汽车零部件与整车技术重点实验室柳州545006；3.广东工业大学实验教学部广州510006)摘要：为提高复杂曲面零件的数控机床原位检测精度，分析影响接触式检测

2、系统精度的各项因素及其误差补偿方法。对检测系统的主要误差来源如机床几何误差、测头预行程误差和测头半径误差进行分析研究。在对数控机床的几何误差进行分析和建模的基础上，采用激光干涉仪进行三轴数控机床的单项误差测量和补偿；针对测头检测过程中存在的预行程误差，提出基于径向基函数(Radialbasisfunction,RBF)的预行程误差预测方法，获得测头预行程误差分布图，并对检测系统进行实时预行程误差的补偿；提出改进的三角网格模型顶点法矢计算方法，有效进行三维测头的半径补偿。通过实例零件的加工精度原位检测试验及其与三坐标测量机C

3、MM检验结果的比较，验证了原位检测方法的有效性。关键词：原位检测误差补偿加工精度复杂曲面数控机床中图分类号：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