操纵拨叉的工艺规程及钻孔夹具设计.doc

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。

ABSTRCT

Thisdesigncontenthasinvolvedthemachinemanufacturecraftandtheenginebedjigdesign,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\h1
HYPERLINK\l"_Toc423889636"一.零件的分析 PAGEREF_Toc423889636\h2
HYPERLINK\l"_Toc423889637"1.1零件的作用 PAGEREF_Toc423889637\h2
HYPERLINK\l"_Toc423889638"1.2零件的工艺分析 PAGEREF_Toc423889638\h2
HYPERLINK\l"_Toc423889639"二.工艺规程设计 PAGEREF_Toc423889639\h3
HYPERLINK\l"_Toc423889640"2.1确定毛坯的制造形式 PAGEREF_T