PAGEII摘要本设计是基于变速器轴承外壳零件的加工工艺规程及一些工序的专用夹具设计。变速器轴承外壳零件的主要加工表面是及孔系。一般来说，保证平面的加工精度要比保证孔系的加工精度容易。因此，本设计遵循先面后孔的原则。并将孔与平面的加工明确划分成粗加工和精加工阶段以保证孔系加工精度。主要加工工序安排是先以支承孔系定位加工出顶平面，在后续工序中除个别工序外均用顶平面和工艺孔定位加工其他孔系与平面。夹具选用专用夹具，夹紧方式多选用手动夹紧，夹紧可靠，机构可以不必自锁。因此生产效率较高。适用于大批量、流水线上加工。能够满足设计要求。关键词：变速器轴承外壳类零件；工艺；夹具；ABSTRACTThedesignisbasedonthebodypartsoftheprocessingorderoftheprocessesandsomespecialfixturedesign.Bodypartsofthemainplaneofthesurfaceandporesystem.Ingeneral,theplaneguaranteeprocessingprecisionthanthatofholesmachiningprecisioneasy.Therefore,thisdesignfollowsthesurfaceafterthefirstholeprinciple.Planewithholesandtheprocessingclearlydividedintoroughingandfinishingstagesofholestoensuremachiningaccuracy.Datumselectionboxinputshaftandtheoutputshaftofthesupportingholeasaroughbenchmark,withtopwithtwoholesasaprecisiontechnologyreference.Mainprocessesarrangementstosupportholesforpositioningandprocessingthetopplane,andthenthetopplaneandthesupportingholelocationholeprocessingtechnology.Inadditiontothefollow-upprocessesindividualprocessesaremadeofthetopplaneandtechnologicalholelocationholeandplaneprocessing.Supportedholeprocessingusingthemethodofcoordinateboring.Thewholeprocessofprocessingmachinecombinationswereselected.Selectionofspecialfixturefixture,clampingmeansmorechoiceofpneumaticclamping,clampingreliable,institutionscannotbelocked,sotheproductionefficiencyishigh,suitableforlargebatch,lineprocessing,canmeetthedesignrequirements.Keywords:Anglegearseatparts;fixture;全套设计加197216396或401339828目录TOC\o"1-3"\u摘要PAGEREF_Toc385171884\hIIABSTRACTPAGEREF_Toc385171885\hIII第1章加工工艺规程设计PAGEREF_Toc385171886\h11.1零件的分析PAGEREF_Toc385171887\h11.1.1零件的作用PAGEREF_Toc385171888\h11.1.2零件的工艺分析PAGEREF_Toc385171889\h11.2变速器轴承外壳加工的主要问题和工艺过程设计所应采取的相应措施PAGEREF_Toc385171890\h21.3变速器轴承外壳加工定位基准的选择PAGEREF_Toc385171891\h21.3.1粗基准的选择PAGEREF_Toc385171892\h21.3.2精基准的选择PAGEREF_Toc385171893\h21.4变速器轴承外壳加工主要工序安排PAGEREF_Toc385171894\h31.5机械加工余量、工