资源描述:
《多孔材料高速微铣削系统动力学建模与实验的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、摘要万方数据AbstractAbstractWiththecontinuousexplorationofnewmaterials,theporousmaterialisrapidlyinfiltratedintomanyfields.Howeverbasedoncharacteristicsofquickprocessingspeed,smallcostandsoon,micro-millingmachiningtechnologyisespeciallysuitableforporousmaterialminiaturecomponents’formationandm
2、anufacture.Theserviceperformanceandlifeexpectancyofcomponentsarecloselyrelatedtosurfacequalityandsteadymachiningprocess.Andthereasonableselectionofcraftparametersisplayingacrucialrole.Thisarticlefocusesondynamicsmodelingofmicro-millingprocess,stabilityandsurfacequalityandsoon.Andthepurpo
3、seistoguaranteethesmoothmachiningprocessandreducethedamageofmicro-millingcutter,thenensurecomponents’serviceperformanceatthesametimeprolongtheirservicelife.Themainworkisasfollows:Atfirstthisarticleintroducesthebasicconceptsandcharacteristicsofporousmaterials,establishessimplifiedmodelofh
4、oleconfigurationsystemandcarriesontheequivalentstiffnessanalysisoftheporousmaterial.Thenitestablishesmicro-millingdynamicsmodelofporousmaterials,basedonthismodelitseparatelyanalyzestheinfluenceofbothmicro-millingcutterandporousmaterialwork-piece’sstiffness,dampingratioandnaturalfrequency
5、onthestability.Onthebasisoftheoreticalanalysis,itlaunchesaninfluenceexperimentofthemicro-millingparametersforfurtherresearch,thatisthetoolconditionmonitoring.Throughexperimentsinitiallyestablishestherelationshipofmicro-millingforcesignal,vibrationsignalandmillingtemperaturesignalwiththet
6、hreeparameters,includingspindlespeed,axialcuttingdepthandfeedspeed.Toolwearindirectlyreflectswhethertheselectionofthemicro-millingmachiningparametersofporousmaterialsisappropriateornot.Finally,thisarticleanalyzestheproblemofsurfacequalityoftheporousmaterialwork-piece,andthenlinkstheresul
7、tswithprocessparameters.Thispaperhaslaunchedadetailedanalysisandresearchonthesecontent,includingsimplifiedmodelofholeconfigurationsystemofporousmaterials,equivalentstiffness,micro-millingdynamicsmodel,stability,therelevantexperimentaldesignandanalysisoftheresultsoftoolcon