西安文理学院机械电子工程系本科毕业设计(论文)题目典型零件挚子的加工专业班级机械设计制造及其自动化学号08102070101学生姓名吴清乐指导教师田浩任可明设计所在单位西安文理学院2011年5月典型零件挚子的加工摘要:摘要:挚子挚子零件是在工程中用于合闸保持,分闸保持的开关式零件。随着机械工业的发展,挚子的需求量也日益增大,这就要求工厂能以更低的成本、更好的质量进行大批量生产,在保证经济效益的同时满足工业对该产品的需求。该零件是一种非回转体异形件,没有可用的标准夹具,所以,在生产之前需要对其设计特殊夹具以满足其外形要求。此外,机床夹具在机械加工中起着重要的作用,它直接影响机械加工的质量、生产率和生产成本以及工人的劳动强度。为保证被加工挚子零件的必要的精度,根据其材料、轮廓形状、加工精度等选用合适的机床,指定加工方案,确定零件的加工顺序、各工序所有刀具和夹具、切削用量等。在加工工序设计之前,应该首先了解该挚子零件的加工难点,既其侧表面圆弧、头部倒角、中部倒角、尾部台阶面和槽。文中还涉及到该挚子零件在数控铣床上的程序编制,为其用于实际生产提供了可分析的样例。关键字:数控铣床,挚子,专用夹具,铣刀MachiningofTypicalPawlAbstract:Pawlsareusedintheprojectforclosingandopeningtheswitch.Withthedevelopmentofmachineryindustry,thedemandforpawlisgrowing,whichrequiresfactoriesgolowercostandbetterqualityintomassproduction,whileensuringeconomicbenefitstomeettheindustrydemandforthisproduct.Pawlisanon-rotatingshapedasspecialworkpieces,thereisnoavailablestandardfixture,soitneedstodesignaspecialfixturebeforeproductiontomeettherequirementsofitsshape.Moreover,themachiningfixtureplaysanimportantrole,itaffectsthemachiningquality,productivityandproductioncostsandlaborintensitydirectly.Toensuretheprecisionofthenecessarypartstobemachined,chooserightmachineaccordingtothematerial,shapes,andmachiningprecisionoftheworkpiece.Appropriatechoiceofprecisionmachinetools,specifytheprocessingprogramtodeterminethemachiningsequence,theprocessforalltools,fixtures,andcuttingdosagesetc.Beforeprocessdesigning,fisttoknowthatthedifficultyofmachining,thearcinsidesurface,chamferintheheadandmiddle,slotsandstepsurfaceinthetail.Thesisalsorelatestopawl'sintheCNCmillingmachineprogramming,providingitsactualproductionforthecasetobeanalyzed.Keywords:MillingMachinePawlSpecialFixtureMillingCutter目录第1章绪论.........................................................................................................................11.1挚子零件简介.........................................................................................................11.2数控加工的发展趋势.............................................................................................11.2.1高速、高精加工技术...............................................................................21.2.2五轴联动加工和复合加工机床..................................................................21.2.3网络化、开放化、智能化..........................................................................31.2.4自动换刀机构..............................................................................................31.2.5智能适应控制技术......................................................................................31.2.6高集成度电路芯片......................................................................................41.3此课题的意义.........................................................................................................41.4本章小节.............................................