摘要本次设计内容涉及了机械制造工艺及机床夹具设计、金属切削机床、公差配合与测量等多方面的知识。深沟轴承座的加工工艺规程和镇孔的工艺设计、工序设计以及专用夹具的设计三部分。在工艺设计中要首先对零件进行分析，了解零件的工艺再设计出毛坯的结构，并选择好零件的加工基准，设计出零件的工艺路线；接着对零件各个工步的工序进行尺寸计算，关键是决定出各个工序的工艺装备及切削用量；然后进行专用夹具的设计，选择设计出夹具的各个组成部件，如定位元件、夹紧元件、引导元件、夹具体与机床的连接部件以及其它部件；计算出夹具定位时产生的定位误差，分析夹具结构的合理性与不足之处，并在以后设计中注意改进。关键词：深沟轴承座；切削用量；定位误差IAbstractThisdesigninvolvesmechanicalmanufacturingtechnologyandmachinetoolfixturedesign,metalcuttingmachinetools,tolerancefitandmeasurementandotheraspectsofknowledge.ThedeepgroovebearingseatprocessingprocedureandmillingdatumCprocessdesign,processdesignandspecialfixturedesignthreeparts.Intheprocessdesign,wemustfirstanalyzetheparts,understandtheprocessoftheparts,thendesignthestructureoftheblank,andselecttheprocessingbenchmarkoftheparts,thendesigntheprocessrouteoftheparts.Thedesignofspecialfixtureiscarriedout,andeachcomponentoffixtureisselected,suchaspositioningcomponent,clampingcomponent,guidingcomponent,connectingcomponentbetweenfixtureandmachinetool,andothercomponents;thepositioningerrorcausedbyfixturepositioningiscalculated,therationalityandshortcomingsoffixturestructureareanalyzed,andthenotesinfuturedesignaregiven.Itisintendedtobeimproved.Keywords:Deepgroovebearingpedestal,cuttingparameterandpositioningerror.ii目录摘要......................................................................................................................................IAbstract................................................................................................................II第1章零件的分析..........................................................................................................11.1零件的分析.........................................................................................................11.2零件的主次表面...............................................................................................21.3零件表面的技术要求...................................................................................21.4结构工艺性分析........