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分类号学号M200970660___M200970660___M200970660___M200970660___学校代码10487104871048710487密级硕士学位论文硕士学位论文硕士学位论文硕士学位论文基于知识的模具数控自动加工功能的研究学位申请人：夏佳君学科专业：材料加工工程指导教师：吴志超副教授答辩日期：2012年1月4日AAAAThesisThesisThesisThesisSubmittedSubmittedSubmittedSubmittedininininPartialPartialPartialPartialFulfillmentFulfillmentFulfillmentFulfillmentofofofofthethethetheRequirementsRequirementsRequirementsRequirementsForForForForthethethetheDegreeDegreeDegreeDegreeofofofofMasterMasterMasterMasterofofofofEngineeringEngineeringEngineeringEngineeringResearchResearchResearchResearchononononthethethetheCNCCNCCNCCNCIntelligentIntelligentIntelligentIntelligentProgrammingProgrammingProgrammingProgrammingTechnologyTechnologyTechnologyTechnologyofofofofMoldMoldMoldMoldBasedBasedBasedBasedononononKBEKBEKBEKBECandidateCandidateCandidateCandidate::::XiaXiaXiaXiaJiajunJiajunJiajunJiajunMajorMajorMajorMajor::::MaterialMaterialMaterialMaterialProcessingProcessingProcessingProcessingEngineeringEngineeringEngineeringEngineeringSupervisorSupervisorSupervisorSupervisor::::AssociateAssociateAssociateAssociateprofessor.professor.professor.professor.WuWuWuWuZhichaoZhichaoZhichaoZhichaoHuazhongHuazhongHuazhongHuazhongUniversityUniversityUniversityUniversityofofofofScienceScienceScienceScience&&&&TechnologyTechnologyTechnologyTechnologyWuhanWuhanWuhanWuhan430074,430074,430074,430074,P.R.ChinaP.R.ChinaP.R.ChinaP.R.ChinaJanJanJanJan,,,,2020202012121212独创性声明本人声明所呈交的学位论文是我个人在导师指导下进行的研究工作及取得的研究成果。尽我所知，除文中已经标明引用的内容外，本论文不包含任何其他个人或集体已经发表或撰写过的研究成果。对本文的研究做出贡献的个人和集体，均已在文中以明确方式标明。本人完全意识到，本声明的法律结果由本人承担。学位论文作者签名：日期：年月日学位论文版权使用授权书本学位论文作者完全了解学校有关保留、使用学位论文的规定，即：学校有权保留并向国家有关部门或机构送交论文的复印件和电子版，允许论文被查阅和借阅。本人授权华中科技大学可以将本学位论文的全部或部分内容编入有关数据库进行检索，可以采用影印、缩印或扫描等复制手段保存和汇编本学位论文。保密□，在_____年解密后适用本授权书。不保密□。（请在以上方框内打“√”）学位论文作者签名：指导教师签名：日期：年月日日期：年月本论文属于华华华华中中中中科科科科技技技技大大大大学学学学硕硕硕硕士士士士学学学学位位位位论论论论文文文文I摘摘摘摘要要要要数控加工技术以其高效率、高可靠性、高加工质量的特点广泛应用于模具生产，其中数控加工程序作为实现数控加工上述优势的关键，其合理性直接决定了模具的加工效率、加工质量和加工成本。编制数控加工程序过程中，不同编程人员根据个人加工经验对同一模具的加工工艺设计有所不同，因而导致加工结果不统一，容易造成管理混乱。因此，研究如何规范加工工艺路线并提高编程效率对提高数控加工程序质量具有重要意义。本文基于UG/CAM平台，将知识工程技术应用到模具数控自动加工设计中，主要从标准工艺模板的提取、知识规则库的建立、加工参数的自动匹配三方面展开研究。首先针对铝合金模具、铸铁模具和泡沫的加工经验，提炼出各自的加工操作步骤以及对应的主要加工参数，利用UG/CAM自定义模板功能将典型模具作为模板文件，完成手动标准工艺模板的建立，对模具数控加工步骤进行了规范化定制，提高了加工编程的效率，并减少了程序出错率。其次利用KBE技术，将标准工艺模板中的工艺参数分别建立成模板实例库、操作实例库、操作规则库、几何规则库和刀具库，使数控加工工艺知识以层次化、结构化的方式表达出来，利于知识库的管理及自动匹配规则的设计。最后利用基于规则和基于实例集成的推理方式，设计了知识规则库的推理机，实现待加工模具几何体和加工参数的自动匹配过程。模具数控自动加工功能的实现使加工智能化，并能大大提高编程效率。关键词：数控加工，模板，知识工程，知识规则库，推理机华华华华中中中中科科科科技技技技大大大大学学学学硕硕硕硕士士士士学学学学位位位位论论论论文文文文IIAbstractAbstractAbstractAbstractThecomputernumericalcontrolling(CNC)processingtechnologyiswidelyappliedtomoldproduction,becauseofitsadvantagessuchashighefficiency,highreliabilityandhighprocessingquality.Furthermore,theCNCprogramisthekeyfactortotheachievementoftheseadvantages.Therefore,theefficiencyandthequalityofthemoldprocessingaredirectlydeterminedbytherationalityoftheCNCprogramaswellastheprocessingcost.Themachiningprocessesareusuallydifferentbecauseofdifferentprogrammerswhohavevariousprocessingexperience.Thusthemachiningresultsarevaried,whichoftenleadstomanagementconfusion.Consequently,itisessentialforthequalityofCNCprogramtostudyhowtostandardizethemachiningprocessmapsandimprovetheprogrammingefficiency.BasedonUG/CAMplatform,theknowledgeengineeringtechnologywasappliedtotheautomaticdesignoftheCNCprogramformolds.Theresearchwasconductedfromthreeaspects,includingtheextractionsofstandardprocessingplates,theestablishmentofknowledgelibraryandtheautomaticmatchofprocessingparameters.Firstly,accordingtothemachiningexperienceofthealuminumalloy,thecastironandthefoammolds,theprocessingstepsandthecorrespondingprocessingparameterswereextracted.TheprocessplatesofthetypicalmoldsweresetupbymakinguseofthefunctionofcustomizingplatesonUG/CAM.Andthemanualstandardprocessingplateswereestablished.Themoldprocessingstepswerecustomizednormallywhichimproveprogrammingefficiencyandreduceerrors.Secondly,takingadvantageoftheKBEtechnology,theprocessparametersofthestandardplateswerebuilttothefollowinglibraries:theexampleplates,exampleoperations,operationregulations,geometryregulationsandthecutters.TherebytheCNCprocessingtechnologywasexpressedconceptuallyandstructurally.Finally,theinferenceengineoftheknowledgeregulationlibrarywasdesignbyusingtheintegrationsofrule-basedreasoningandcase-basedreasoning.Theautomaticmatchoftheprocessinggeometryandmachiningparameterswasachieved.Thisaccomplishmentof华华华华中中中中科科科科技技技技大大大大学学学学硕硕硕硕士士士士学学学学位位位位论论论论文文文文IIIthefunctionofautomaticCNCprocessingintelligentizesmachiningprocessesandgreatlyimprovestheprogramefficiency.KeyKeyKeyKeywordswordswordswords:CNC,Template,Knowledgeengineering,Knowledgerulebase,Inferenceengine华华华华中中中中科科科科技技技技大大大大学学学学硕硕硕硕士士士士学学学学位位位位论论论论文文文文IV目目目目录录录录摘要............................................................................................................IAbstractAbstractAbstractAbstract........................................................................................................II1111绪论1.1课题来源、目的和意义..........................