铣曲轴工艺定位面铣床夹具摘要本次毕业设计题目为铣曲轴工艺定位面铣床夹具，铣床类夹具主要用于加工零件上的平面、键槽、缺口及成型表面等。由于铣削加工的切削力较大，又是断续切削，加工中易引起振动，因此要求铣床夹具的相应的元件要有足够的强度，夹紧力应足够大，且有较好的自锁性。此外，铣床夹具一般通过对刀装置确定刀具与工件的相对位置，其夹具体底面大多设有定向键，通过定向键与铣床工作台T形槽的配合来确定夹具在机床的正确位置。夹具与铣床的工作台上的连接还要通过螺栓紧固，因此在设计中综合地考虑了相关安装尺寸。在现代制造技术迅猛发展的今天，机床夹具无论在传统机床上还是在数控机床、加工中心上，仍是必不可少的重要工艺装备。通过机床夹具设计，我们不仅可以培养综合运用已学知识的能力而且可以得到工程设计的综合训练。关键词：曲轴，定位，铣床，强度，自锁ICRANKSHAFTMILLINGMACHINEFIXTURESURFACEPOSITIONINGTECHNOLOGYABSTRACTThegraduationprojectentitledTechnologicalPositioningCrankshaftmillingmachinefixturetypeface,clamp-typemillingmachinemainlyusedforprocessingpartsoftheplane,keyway,andthegapandformingsurface.Millingofthecuttingforceduetothelarger,butalsointermittentcutting,processingiseasytocausevibration,thereforerequestedthemillingmachinecomponentscorrespondingfixtureshouldhavesufficientstrength,clampingforceshouldbelargeenough,andhavebetterself-lockingof.Inaddition,themillingcutterfixturedevices,usuallyderivedbythetoolandtheworkpiecetodeterminetherelativeposition,thefolderhasdirectedmostofthespecifickeybottom,throughthedirectionalkeysandthemillingtablewithT-shapedslotinthemachinetoolfixturetodeterminethecorrectposition.Millingmachinefixtureandconnecttheworkplatformthroughfasteningbolts,sothedesignofanintegratedconsiderationoftherelevantinstallationsize.Intherapiddevelopmentofmodernmanufacturingtechnologyoftoday,bothinthetraditionalfixtureonthemachineorCNCmachinetools,machiningcenterisstillanimportanttechniqueandequipmentisessential.FixtureDesignthroughthemachine,wecandeveloptheintegrateduseofnotonlyhastheabilityandknowledgeengineeringcanbeintegratedtraining.KEYWORDS:crankshaft，positioning，millingmachines，strength，self-lockingII目录前言...............................................................................................1第1章概述..................................................................................21.1夹具的特点.....................................................................21.2研究夹具的目的和意义....................................51.3夹具的国内外现状和发展趋势.................61.4夹具的基本结构和工作原理.......................6第2章工件的定位..............................................................82.1工件的定位原理........................................................82.1.1六点定位规则....................................................82.1.2常见定位方式所限制的自由度.......82.1.3正确处理过定位..............................................92.2设计零件的定位方式.......................................10第3章工件的结构特点及加工要求.............143.1工件的结构特点....................................................143.2工件的加工要求....................................................14第4章设计方案的讨论..............................................164.1初定夹具结构设计方案.................................164.1.1工件定位方案及定位装置.................164.1.2工件夹紧方案及夹紧装置.................164.1.3其他装置及原件的结构形式..........164.1.4夹具体的结构形式及夹具...
