本科毕业设计论文题目CA6140车床法兰盘的工艺规程和夹具设计毕业任务书一、题目CA6140车床法兰盘的工艺规程和夹具设计二、指导思想和目的要求毕业设计(论文)是培养学生自学能力、综合应用能力、独立工作能力的重要教学实践环节。在毕业设计中,学生应独立承担一部分比较完整的工程技术设计任务。要求学生发挥主观能动性,积极性和创造性,在毕业设计中着重培养独立工作能力和分析解决问题的能力,严谨踏实的工作作风,理论联系实际,以严谨认真的科学态度,进行有创造性的工作,认真、按时完成任务。三、主要技术指标1.零件图一张;2.毛坯图一张;3.工艺规程一本;4.工艺装备(夹具1-2套);5.说明书一份四、进度和要求1.分析并绘制零件图2周2.绘制毛坯图1周3.设计工艺路线及编制工艺规程5周4.设计工艺装备4周5.编写说明书(论文)2周五、主要参考书及参考资料[1]王先逵编著.机械制造工艺学[M].北京:清华大学出版社,1989[2]杨叔子.机械加工工艺师手册[M].北京:机械工业出版社,2001[3]朱耀祥,蒲林祥.现代夹具手册[M].北京:机械工业出版社,2010设计论文III摘要本次毕业设计的题目是CA6140车床法兰盘的工艺规程和夹具设计,主要内容如下:首先,对零件进行分析,主要是零件作用的分析和工艺性分析,通过零件分析可以了解零件的基本情况,而工艺分析可以知道零件的加工表面和加工要求。根据零件图提出的加工要求,确定毛坯的制造形式和尺寸。其次,进行基面的选择,确定加工过程中的粗基准和精基准。根据选好的基准,制订工艺路线,通常制订两种以上的工艺路线,通过工艺方案的比较与分析,再选择可以使零件的几何形状、尺寸精度及位置精度等技术要求得到合理的保证的一种较佳工序路线。然后,根据已经选定的工序路线,确定每一步的切削用量及基本工时,并选择合适的机床和刀具和量具。最后,设计钻法兰盘4-Ø9孔的钻床夹具。设计钻床夹具,首先要仔细分析被加工零件的技术要求,运用夹具设计的基本原理和方法,拟定夹具设计方案;在满足加工精度的条件下,合理的进行安装、定位、夹紧;在完成夹具草图后,进一步考虑零件间的连接关系和螺钉、螺母、定位销等的固定方式,设计合理的结构实现各零部件间的相对运动;根据各零件的使用要求,选择相应的材料。完成钻床夹具的所有设计后,用AutoCAD进行二维图形的绘制,首先画装配图,然后从装配图上拆画零件图,标注相关尺寸及技术要求;再用CATIA画出三维模型图,最后进行论文的撰写、整理、修改完成该毕业设计。关键词:机械,法兰盘,加工工艺,夹具设计IIIABSTRACTThesubjectofthisgraduationprojectisthatCA6140latheringflangeprocessingtechnologyrulesandspecial-purposejigofacertainprocessaredesigned,themaincontentisasfollows:Firstofall,analyse,itismainlyanalysisofthefunctionofthepartandcraftanalysistothepart,throughpartanalysecanfindoutaboutbasicsituationofpart,andcraftanalysemayknowtheprocessingsurfaceofthepartandisitrequiretoprocess.Theprocessingdemandputforwardaccordingtothepartpicture,confirmthemanufactureform.oftheblankandsurenessofthesize.Thesecondstep,carryonthechoicethebase,confirmthickdatumandprecisedatumintheprocessingcourse.Accordingtothedatumchosen,makethecraftroute,usuallymakethecraftrouteofmorethantwokinds,withanalysingthroughthecomparisonofthecraftscheme,andthenchoosingbeabletomakesuchspecificationrequirementsastheprecisionofgeometryform.sizeofthepartandprecisionofposition,etc.getakindofprocessoftherationalassurances.Thethirdstep,accordingtothealreadyselectedprocessroute,confirmforeverystepsofcuttingconsumptionandbasicman-hour,choosesuitablelatheandcutter.Toroughmachining,willcheckthepowerofthelathe.Finally,designthejiggettingintotheholeoftheringflange.Designeddrillingfixture,thefirstcarefulanalysisisthetechnicalrequirementsforprocessingcomponents,fixturedesignusingthebasicprinciplesandmethods.Preparedthefixturedesignscheme;Meettheconditionsofprecision,thenreasonableinstallation,positioning,clamping;Afterthecompletionofdraftfixture,andfurtherconsidertheconnectionrelationbetweenpartsandscrews,nuts,pinsandotherfixedmeans,designingthereasonablestructuretoachieverelativemotionbetweenthevariouscomponents;Requirementsofthevariouscomponents,selecttheappropriatematerials.Completionofalldrillingfixturedesign,usingtheAutoCADdrawingtwo-dimensionalgraphics,firstdrawassemblydrawing,andthenremovedfromthepartdrawingonthepaintingParts,markingtherelatedtosizeandtechnicalrequirements,finally,writeathesis,organize,edit,completethegraduationproject.KEYWORDS:machine,flange,processthecraft,thetongsdesignV目录第1章绪论...........................................................................................................7第2章零件的结构工艺性分析...............................................................................82.1零件的作用.....................................................................................................82.2零件的工艺性分析.........................................................................................8第3章工艺规程设计.............................................................................................103.1确定毛坯的制造形式...................................................................................103.2基准的选择...................................................................................................103.2.1粗基准的选择.......................................................................................103.2.2精基准的选择.......................................................................................113.3工艺路线的拟定...........................................................................................113.3.1选择加工方法......................................................................................113.3.2划分加工阶段......................................................................................123.3.3安排加工顺序......................................................................................123.4机械加工余量、工序尺寸及毛坯尺寸的确定...........................................133.5确定切削用量及基本工时...........................................................................18第4章夹具设计与分析.........................................................................................234.1问题的提出...................................................................................................234.2夹具设计.......................................................................................................234.2.1夹具结构和类型的选取......................................................................234.2.2夹具定位元件的选择..................................