XX毕业设计题目：平面轮廓零件的数控加工及工艺分析系部专业名称班级姓名学号指导教师摘要高效率、高精度加工是数控机床加工最主要特点之一。利用数控机床加工，其产品加工的质量一致性好，加工精度和效率均比普通机床高出很多，尤其在轮廓不规则、复杂的曲线或曲面、多工艺复合化加工和高精度要求的产品加工时，其优点是传统机床所无法比拟的。本课题对异性体、复杂的曲线、多工艺复合化加工进行探索，设计出三种切实可行的工艺流程及工艺装备。在产品的加工过程中，工件在夹具内的定位和夹紧显得特别重要。须根据六点定位对产品进行合理的定位，欠定位、完全定位还是过定位都须根据实际的生产过程决定。夹具是涵盖了从加工到组装的几乎所有操作过程的一种装夹设备。由于大量的加工操作需要装夹，夹具设计在制造系统中就变得非常重要，它直接影响加工质量，生产率和制造成本。本文通过分析结构特点和加工要求，制定了一套较合理的夹具设计，从而为保证该零件的加工精度将提供一种经济实用的工艺装备，具有一定的实用价值。通过对各种定位夹紧装置的分析比较，选择并组合了一套既能够满足加工要求的，又比较简洁的装置，并对各工步进行数控编程。关键词：数控加工，工艺流程，工艺装备，夹具设计ABSTRACTThehighefficiency,theprecisionworkareoneofnumericalcontrolenginebedprocessingmostmaincharacteristics.Usingthenumericalcontrolenginebedprocessing,itsproductprocessingqualityuniformityisgood,theprocessingprecisionandtheefficiencyoutdocomparedtotheordinaryenginebedverymuch,especiallywhenoutlinenotrule,complexcurveorcurvedsurface,multi-craftrecombineprocessingandhighaccuracyrequestproductprocessing,itsmeritisthetraditionalenginebedisunabletocompare.Thistopictotheoppositesexbody,thecomplexcurve,themulti-craftrecombineprocessingcarriesontheexploration,designsthreepracticalandfeasibletechnicalprocessesandthecraftequipment.Intheproductprocessingprocess,theworkpieceappearsinjiglocalizationandtheclampspeciallyimportantly.Mustactaccordingtosixlocalizationstocarryonthereasonablelocalizationtotheproduct,owesthelocalization,locatescompletelycrossesthelocalizationalltohavetoactaccordingtotheactualproductionprocessdecision.Thejigcoveredfromhasprocessedclampstheequipmenttotheassemblynearlyalloperatingprocessonekindofattire.Becausethemassiveprocessingoperationneedstoinstallclamps,thejigdesignchangescanitbethattheconstantweightinthemanufacturesystemtowant,itaffectstheprocessingqualitydirectly,theproductivityandtheproductioncost.Thisarticlethroughtheanalysissupportcomponents,theaircompressorsniftingvalvelidaswellasthesupportingtheuniquefeatureandtheprocessingrequestwhichwraps,hasformulatedasetofreasonablejigdesign,thusforguaranteedthiscomponentstheprocessingprecisionwillprovideoneeconomicalpracticalcraftequipment,willhavecertainpracticalvalue.Throughtoeachkindoflocalizationclampanalysiscomparison,choseandcombinesasetbothtobeabletosatisfytheprocessingrequest,andthequitesuccinctinstallment,andcarriedonthenumericalcontrolprogrammingtoeachstepworkingprocedure.Keyword:numericalcontrolprocessing,technicalprocess,craftequipment,jigdesign目录1绪论.....................................................................................................................................................................12零件分析............................................................................................................................................................22.1零件的结构特点...........................................................................................................
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