资源描述：
《光学自由曲面超精密飞刀加工数控代码生成的研究》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、工学硕士学位论文光学自由曲面超精密飞刀加工数控代码生成的研究王浩哈尔滨工业大学2006年12月国内图书分类号：TG659国际图书分类号：621.396.4工学硕士学位论文光学自由曲面超精密飞刀加工数控代码生成的研究硕士研究生：王浩导师：李兵教授副导师：张志辉副教授申请学位：工学硕士学科、专业：机械电子工程所在单位：深圳研究生院答辩日期：2006年12月授予学位单位：哈尔滨工业大学-NCCODEGENERATIONOFFREE-FORMSURFACEINULTRA-PRECISIONRASTERMILLINGbyH
2、AOWANGAthesissubmittedinconformitywiththerequirementsforthedegreeofMasterofScienceatShenzhenGraduateSchoolHarbinInstituteofTechnologyDecember,2006ABSTRACTNowadaysfreeformsurfaceshavebeenwidelyusedinaircraft,shipbuilding,andautomotiveindustries.Duetotheintrins
3、icfeatureofvariablecurvature,freeformsurfacesareespeciallyidealrepresentationforopticsdesignandmodeling.Withtheadvancedfabricationprocessandtheadoptionofnewopticalmaterials,freeformsurfaceswithsub-micronformaccuracyandnanometricsurfaceroughnesshasbeenappliedi
4、nmassproductionofadvancedopticalcomponentssuchasf-thetalensesforlaserscanners,asphericCCDcameralenses,LEDcollimators,progressivelenses,multi-layerdiffractionopticalelements,andevenautomotiveheadlampreflectors.Thethesisisdedicatedtosolvethekeyproblemsencounter
5、edinthefabricationoffreeformsurfacesinultra-precisionrastermilling(UPRM).Asurveyofpriorrelatedworkfocusesonthetoolpathgeneration(TPG)andNCcodegenerationprocessesinultra-precisionmachining.AvarietyofmachiningstrategiesandCAMsoftwarekitsarelistedandcompared.The
6、thesisfurtherproposesthetoolpathgenerationmethod,geometriccuttercompensation,andapracticalgouge-avoidingalgorithminUPRM.Thethesistakesasexamplethemachiningprocessofanf-thetalensprototypetoexplaintheconstantscallop-heightTPGmethodinUPRM,basedonthespecificconfi
7、gurationoftheequipmentandthegeometryofthediamondcutter.Theverificationexperimenthasproventhecorrectnessandeffectivenessofthemethod.Furthermore,thethesisstudiesthemachiningerrorscausedbytheconditionofthediamondtoolandtheaxismotionsinUPRM.Withanempiricalapproac
8、h,theerrorsourcesareinvestigatedanddistinguishedbasedontheireffectsonthesurfacefinish.Themainsourceleadingtopoorsurfacefinishisidentified,whichestablishesabasisforsubsequenterrorcompensat
