加工支座组合夹具虚拟拼装的设计

天津理工大学本科毕业设计说明书加工支座组合夹具虚拟拼装设计摘要组合夹具是在夹具零部件完全标准化的基础上，根据积木化原理，针对不同的工件对象和加工要求，拼装组合而成的夹具。夹具用完后可进行拆卸，留待组装新的夹具。它主要用于单件、中小批多品种生产和数控加工中，是一种较经济的夹具。目前已基本普及，各城市及各大工厂均有自己的组合夹具站。本文通过五章内容介绍了加工支座组合夹具的设计，第一章先对机床夹具和组合夹具的概念、作用和发展趋势做出了明确的说明。从第二章到第五章分别对车Φ28H8孔零件的组合夹具设计、铣A、C两平面零件的组合夹具设计、刨B面及槽零件的组合夹具设计、钻2-M10底孔零件的组合夹具设计进行了详细的阐述，每章都通过零件图的分析、零件的组合夹具设计方案的拟定、零件的组合夹具的总体设计、夹具装配工程图上尺寸公差及技术要求的标注、零件在夹具中的定位方案分析（从零件图分析应限制哪些自由度、从夹具定位方案分析已限制了哪些自由度、定位方案论证）、零件在夹具中的夹紧、零件加工误差的分析、保证零件图各项精度要求的分析、组装过程及注意要点、本夹具的使用操作过程说明、本夹具的优缺点分析。关键词：支座组合夹具定位夹紧VirtualAssemblyofSupportProcessingModularFixtureABSTRACTModularfixtureisbasedonthestandardizationoffixtureparts,accordingtotheprincipleofmodular,andmachiningobjectandaccordingtodifferentrequirements,becomestheassemblingfixture.Afterusing,Fixturecanberemovedtoanew天津理工大学本科毕业设计说明书assemblyfixture.Itismainlyusedforsinglepiece,smallbatchandmorevarietiesofproductionandinthenumericalcontrolprocessing.Itisakindofmoreeconomicfixture.Ithasbasicpopularization,eachcityandeachbigfactoryallhavetheirowncombinationfixturestandard.Thefifthchaptersinthispaper,introducestheprocessingsupportmodularfixturedesign.Thefirstchapterintroducethemachinetoolfixtureandtheconcept,functionanddevelopmenttrendofthemodularfixtureveryclearly.Fromchapter2tochapter5respectivelyintroducethedesignofΦ28h8holepartsofmodularfixture,millingAandCtwoplanepartsofmodularfixture,planesurfaceandgroovepartBofmodularfixture,drillingand2-M10bottomintakeofmodularfixture.Eachchaptercompletestheanalysisofpartdrawing,partsofmodularfixturedesignschemeproposed,thecomponentsoftheoveralldesignofmodularfixture,fixtureassemblyengineeringdimensionaltoleranceandtechnicalrequirementsofmarkingonthedrawing,partsinthefixturelocatingschemeanalysis(fromtheanalysisofthepartdrawingshouldlimitfreedomwhich,fromtheanalysisoffixturelocatingschemewhichhaslimitedthedegreeoffreedom,positioningschemecomparison),partsinthefixtureclamping,processingerroranalysis,.Inordertoensurethattherequirementofaccuracyinthedetaildrawingsofvariousanalysis,assemblyprocessandkeypoints,theuseofthisfixtureoperationprocess,analysisoftheadvantagesanddisadvantagesofthisfixture.KeyWords:BearingModularfixturePositioningclamping天津理工大学本科毕业设计说明书目录引言............................................................................................................................................1第一章夹具概念....................................................................................................................21.1机床夹具....................................................................................................................21.1.1机床夹具的概念................................................................................................21.1.2机床夹具的作用................................................................................................21.1.3机床夹具的发展趋势........................................................................................21.2组合夹具......................................................................................................................21.3加工支座组合夹具......................................................................................................3第二章车Φ28H8孔零件的组合夹具设计.....................................................................42.1零件图的分析...............................................................................................................42.2车Φ28H8孔零件的组合夹具设计方案的拟定.........................................................52.3车Φ28H8孔零件的组合夹具的总体设计.................................................................52.4夹具装配工程图上尺寸公差及技术要求的标注.......................................................72.5零件在夹具中的定位方案分析...................................................................................82.5.1从零件图分析应限制哪些自由度....................................................................82.5.2从夹具定位方案分析已限制了哪些自由度....................................................92.5.3定位方案论证....................................................................................................92.6零件在夹具中的夹紧.................................................................................................102.7零件加工误差的分析.................................................................................................122.8保证零件图各项精度要求的分析.............................................................................122.9组装过程及注意要点.................................................................................................132.10本夹具的使用操作过程说明...................................................................................132.11本夹具的优缺点分析...............................................................................................14第三章铣A、C两平面零件的组合夹具设计.............................................................153.1零件图的分析.............................................................................................................153.2铣A、C两平面零件的组合夹具设计方案的拟定...................................................163.3铣A、C两平面零件的组合夹具的总体设计...........................................................163.4夹具装配工程图上尺寸公差及技术要求的标注..............