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毕业设计（论文）CA6140车床后托架加工工艺及夹具设计学生姓名:学生学号:院（系）:年级专业:指导教师:二〇〇六年六月攀枝花学院本科毕业设计（论文）摘要I摘要机械加工工艺是实现产品设计，保证产品质量，节约能源，降低消耗的重要手段。本课题研究CA6140车床后托架加工工艺规程。首先通过对零件图的分析，了解工件的结构形式，明确了具体的技术要求，从而对工件各组成表面选择合适的加工方法。再拟订较为合理的工艺规程，充分体现质量、生产率和经济性的统一。机床夹具设计是工艺装备设计中的一个重要组成部分，在整个机械加工过程中，夹具除了夹紧、固定被加工零件外，还要求保证加工零件的位置精度、提高加工生产率。本课题在设计的过程当中，深入生产实际，进行调查研究，吸取国内外先进技术，制定出合理的设计方案，在进行具体设计。关键词产品设计，后托架，加工工艺，夹具攀枝花学院本科毕业设计（论文）ABSTRACTIIABSTRACTHemachine-finishingcraftrealizestheproductdesign,guaranteedtheproductquality,savestheenergy,reducestheconsumptiontheimportantmethod.AfterthistopicstudiestheCA6140lathethebracketprocessingtechnologicalprocess.Firstthroughtothedetaildrawinganalysis,understoodtheworkpiecethestructuralstyle,hasbeenclearabouttheconcretespecification,thustoworkpieceeachcompositionsurfacechoiceappropriateprocessingmethod.Againdraftsthemorereasonabletechnologicalprocess,fullymanifeststhequality,theproductivityandtheefficientunification.Enginebedjigdesignisinacraftequipmentdesignimportantconstituent,intheentiremachine-finishingprocess,thejigexceptclamps,fixesisprocessedoutsidethecomponents,butalsorequestsguaranteeprocessingcomponentspositionprecision,enhancementprocessingproductivity.Thistopicinthemiddleofthedesignprocess,penetratestheproductionreality,conductstheinvestigationandstudy,absorbsthedomesticandforeignadvancedtechnologies,formulatesthereasonabledesignproposal,iscarryingontheconcretedesign.Keywordsshifttheproductdesign，latterbracket，processingcraft，jig攀枝花学院本科毕业设计（论文）CA6140车床后托架加工工艺设计1目录摘要…………………………………………………………………………………………ⅠABSTRACT……………………………………………………………………………………Ⅱ1CA6140车床后托架的加工工艺设计.....................................................................31.1CA6140车床后托架的结构特点和技术要求..........................................................31.2CA6140车床后托架的材料、毛坯和热处理...................................................................31.2.1毛坯材料及热处理.................................................................................................31.2.2毛坯的结构确定.....................................................................................................41.3工艺过程设计中应考虑的主要问题................................................................................41.3.1加工方法选择的原则.............................................................................................41.3.2加工阶段的划分.....................................................................................................41.3.3工序的合理组合.....................................................................................................51.3.4加工顺序的安排.....................................................................................................51.4CA6140车床后托架的机械加工工艺过程分析...............................................................61.4.1CA6140车床后托架零件图分析...........................................................................61.4.2CA6140车床后托架的加工工艺的路线...............................................................71.5CA6140车床后托架的工序设计.....................................................................................121.5.1工序基准的选择...................................................................................................121.5.2工序尺寸的确定...................................................................................................121.5.3加工余量的确定...................................................................................................141.5.4确定各工序的加工设备和工艺装备..................................................................151.5.5确定切削用量及工时定额..................................................................................162专用夹具设计........................................................................................................272.1铣平面夹具设计...............................................................................................................272.1.1研究原始质料.......................................................................................................272.1.2定位基准的选择...................................................................................................272.1.3切削力及夹紧分析计算......................................................................................272.1.4误差分析与计算...................................................................................................282.1.5夹具设计及操作的简要说明..............................................................................292.2钻三杠孔夹具设计..........................................................................................................292.2.1研究原始质料.......................................................................................................292.2.2定位基准的选择...................................................................................................302.2.3切削力及夹紧力的计算......................................................................................302.2.4误差分析与计算...................................................................................................312.2.5夹具设计及操作的简要说明..............................................................................322.3钻底孔夹具设计.....................................