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阀堵工艺工装设计及CADCAM毕业论文.doc

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阀堵工艺工装设计及CADCAM毕业论文.doc

本科生毕业设计(论文)I摘要本毕业设计题目是阀堵工艺工装设计及CAD/CAM,来自岫岩机械有限公司。公司专门从事国外机加工生产,主要的加工对象是阀体类零件,在精密铸造方面也有着他们自己的先进技术。分析零件特点拟订合理的工艺规程,依据工艺规程设计,选择机床和设计合理的夹具。设计内容利用Pro/engineer的零件模块建造实体模型利用CAXA电子图版绘制零件的工艺规程表和夹具设计图利用MasterCAM模拟上表面各槽的加工路线和生成数控代码,利用CIMCOEdit对生成的数控代码进行仿真。设计难点在零件的工艺规程设计中,零件下表面粗糙度要求较高,通过精磨可以达到要求。零件中心孔的粗糙度要求也较高,通过磨销即可达到要求。零件上表面0.38深圆槽较难加工,在加工中心用38.0的专用铣刀完成。零件下表面4.83宽圆槽也比较难加工,利用加工中心完成。关键词模具夹具模拟制造实体造型本科生毕业设计(论文)IIAbstractThesubjectofthisdesignisdesigningtheassemblyandcraftofvalvebase.ItalsorelatetoCAD/CAM.ThissubjecttaskcomesfromXiuyanMachineryCO.LTDwhichworksinmachiningproductionforabroad.Itsmainmachiningobjectsarepartsliketypesofvalvebase.Ithasadvancedtechnologyininvestmentcasting.Thefeatureofthepartsisanalyzedsoastoplanthereasonableprocessandselectthecorrespondingmachineandinspection.ContentofdesignThepartsmoduleofthePro/engineerisusedtobuildtheworkpiece.CAXAelectricplateisusedtodrawtheaccessorysstipulationchartoftechnicanddesignofjig.MasterCAMisusedtosimulatetheprocessingrouteofeverytroughofabovesurfaceandturnintothenumericalcontrolcode.CIMCOEditisusedtocarryonsimulationtothenumericalcontrolcodeproduced.DifficultiesindesignInthesimulationdesignoftechnic,lowroughnessisrequestedfortheaccessorysundersurfacewhichcanbeachievedbycarefullygrinding.Theroughnessofthecoreboreshouldalsobelow,anditcanberealizedbygrindingtoo.Onthecomponentsthesuperficial0.38deepcircularslotaredifficulttoprocess,andaspecialpurposemillingcutterisusedinthemachiningcenter.Thecomponentsundersurface4.83widecircularslotsarealsoquitedifficulttoprocess,anditcanbecompletedusingthemachiningcenter.Keywordsmouldjigsimulatingmanufacturingphysicalmodel本科生毕业设计(论文)III目录第1章绪论...........................................................................................................11.1模具工业的概况........................................................................................11.2我国模具工业现状....................................................................................11.3我国模具工业的发展方向........................................................................31.4模具CAD/CAE/CAM发展概况及趋势..................................................3第2章零件的三维造型.........................................................................................62.1零件的结构特征分析................................................................................62.2零件的三维造型过程................................................................................62.3零件三维造型的心得................................................................................62.4零件三维造型图片....................................................................................7第3章阀座体的机械加工工艺规程设计.............................................................83.1阀座体工艺规程设计................................................................................83.1.1零件的结构工艺性分析.................................................................83.1.2计算生产纲领,确定生产类型.....................................................83.1.3毛坯种类及其制造方法的确定.....................................................93.2工艺路线的拟订........................................................................................93.2.1定位基准的选择.............................................................................93.2.2制定工艺路线.................................................................................93.2.3选择加工设备及工艺装备...........................................................113.3切削用量和工时定额的确定..................................................................113.3.1基本计算公式的引用...................................................................113.3.2各道工序的设计............................................................................123.4工艺合理性分析......................................................................................433.5填写工艺卡片..........................................................................................43第4章机床专用夹具的设计...............................................................................444.1机床专用夹具设计的基本要求..............................................................444.2钻床夹具Ⅰ的设计..................................................................................454.2.1确定夹具类型...............................................................................454.2.2拟定定位方案和选择定位元件...................................................454.2.3夹具的整体结构设计...................................................................454.2.4夹紧力的分析...............................................................................45本科生毕业设计(论文)IV4.2.5夹具的使用说明...........................................................................464.3钻床夹具Ⅱ的设计..................................................................................464.3.1确定夹具类型...............................................................................464.3.2拟定定位方案和选择定位元件...................................................464.3.3夹具结构的整体设计...................................................................464.3.4夹紧力的分析...............................................................................464.3.5夹具的使用说明...........................................................................474.4钻床夹具Ⅲ的设计..................................................................................474.4.1确定夹具类型...............................................................................474.4.2拟定定位方案和选择定位元件...................................................474.4.3夹具结构的整体设计...................................................................474.4.4夹紧力的分析...............................................................................474.4.5夹具的使用说明...........................................................................474.5钻床夹具Ⅳ的设计..................................................................................484.5.1确定夹具类型...............................................................................484.5.2拟定定位方案和选择定位元件...................................................484.5.3夹具结构的整体设计...................................................................484.5.4夹紧力的分析...............................................................................484.5.5夹具的使用说明...........................................................................484.6立铣加工中心夹具Ⅰ的设计..................................................................494.6.1确定夹具类型...............................................................................494.6.2拟定定位方案和选择定位元件...................................................494.6.3夹具结构的整体设计...................................................................494.6.4夹紧力的分析...............................................................................494.6.5夹具的使用说明...........................................................................494.7立铣加工中心夹具Ⅱ的设计..................................................................504.7.1确定夹具类型...............................................................................504.7.2拟定定位方案和选择定位元件...................................................504.7.3夹具结构的整体设计...................................................................504.7.4夹紧力的分析...............................................................................504.7.5夹具的使用说明...........................................................................50第5章零件复杂表面的CAM设计...................................................................515.1计算机辅助制造(CAM)的介绍........................................................515.2零件复杂表面CAM的设计过程..........................................................51

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