毕业设计说明书题目：操纵拨叉的工艺规程及钻孔夹具设计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。操纵拨叉加工工艺规程及夹具设计是包括零件加工的工艺设计、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：工艺、工序、切削用量、夹紧、定位、误差。ABSTRCTThisdesigncontenthasinvolvedthemachinemanufacturecraftandtheenginebedjigdesign,themetal-cuttingmachinetool,thecommondifferencecoordinationandthesurveyandsoonthevariousknowledge.Thereductiongearboxbodycomponentstechnologicalprocessanditstheprocessingholejigdesignisincludesthecomponentsprocessingthetechnologicaldesign,theworkingproceduredesignaswellastheunitclampdesignthreeparts.Mustfirstcarryontheanalysisinthetechnologicaldesigntothecomponents,understoodthecomponentsthecraftredesignsthesemifinishedmaterialsthestructure,andchoosesthegoodcomponentstheprocessingdatum,designsthecomponentsthecraftroute;Afterthatiscarryingonthesizecomputationtoacomponentseachlaborstepofworkingprocedure,thekeyisdecideseachworkingprocedurethecraftequipmentandthecuttingspecifications;Thencarriesontheunitclampthedesign,thechoicedesignsthejigeachcompositionpart,likelocatesthepart,clampsthepart,guidesthepart,toclampconcreteandtheenginebedconnectionpartaswellasotherparts;Positionerrorwhichcalculatesthejiglocateswhenproduces,analyzesthejigstructuretherationalityandthedeficiency,andwilldesigninlaterpaysattentiontotheimprovement.Keywords:Thecraft,theworkingprocedure,thecuttingspecifications,clamp,thelocalization,theerror目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc423889635"序言PAGEREF_Toc423889635\h1HYPERLINK\l"_Toc423889636"一.零件的分析PAGEREF_Toc423889636\h2HYPERLINK\l"_Toc423889637"1.1零件的作用PAGEREF_Toc423889637\h2HYPERLINK\l"_Toc423889638"1.2零件的工艺分析PAGEREF_Toc423889638\h2HYPERLINK\l"_Toc423889639"二.工艺规程设计PAGEREF_Toc423889639\h3HYPERLINK\l"_Toc423889640"2.1确定毛坯的制造形式PAGEREF_T