配氣機(jī)構(gòu)橫臂零件工藝夾具設(shè)計(jì)說明書.doc

目錄摘要.IAbstract.II第1章緒論.1第2章配氣機(jī)構(gòu)的簡介.22.1配氣機(jī)構(gòu)的工作原理.22.2配氣機(jī)構(gòu)的優(yōu)點(diǎn)及應(yīng)用.22.3配氣機(jī)構(gòu)橫臂零件的作用.32.3.1橫臂零件的作用.32.3.2優(yōu)點(diǎn).32.3.3缺點(diǎn).3第3章配氣機(jī)構(gòu)橫臂零件的機(jī)械加工工藝規(guī)程.43.1配氣機(jī)構(gòu)橫臂零件的工藝分析.43.2配氣機(jī)構(gòu)橫臂零件的機(jī)械加工工藝規(guī)程.43.2.1生產(chǎn)類型的確定.43.2.2材料及毛坯的選擇.53.3配氣機(jī)構(gòu)橫臂零件加工工藝過程的設(shè)計(jì).53.3.1定位基準(zhǔn)的選擇.53.3.2加工方法的選擇.53.3.3加工順序的安排.63.3.4配氣機(jī)構(gòu)橫臂零件加工工藝過程的確定.63.4工序設(shè)計(jì).93.4.1工時(shí)定額的計(jì)算.93.4.2機(jī)床的選擇.93.4.3工藝裝備的選擇.93.4.4加工余量及工序尺寸的確定.93.4.5具體的工序計(jì)算過程.10第4章專用夾具設(shè)計(jì).244.1夾具的設(shè)計(jì)要求.244.2銑無凸臺面夾具設(shè)計(jì)-銑床專用夾具.244.3鉆16孔及M18孔夾具設(shè)計(jì)-鉆床專用夾具.25II結(jié)論.28致謝.29參考文獻(xiàn).30I摘要本課題來源于生產(chǎn)實(shí)踐，充分利用所學(xué)的機(jī)械制圖、機(jī)械設(shè)計(jì)及機(jī)械制造等課程，了解針對配氣機(jī)構(gòu)的特點(diǎn)，通過CAD軟件，利用該軟件制圖功能，完成配氣機(jī)構(gòu)橫臂零件銑鉆孔夾具的設(shè)計(jì)。在課題的研究設(shè)計(jì)階段，首先從眾多的零件中選擇一個(gè)作為設(shè)計(jì)夾具的零件。針對該零件的結(jié)構(gòu)特點(diǎn)，制定該零件的加工工藝。其次要了解夾具的相關(guān)知識，結(jié)合零件的結(jié)構(gòu)特點(diǎn)選擇需要的夾具元件，設(shè)計(jì)出夾具的大體結(jié)構(gòu)。機(jī)床夾具作為一種重要的工藝裝備在機(jī)械制造工藝過程中起著十分重要的作用，它的設(shè)計(jì)不但要保證工件的加工質(zhì)量，提高加工效率，降低成本，在操作維護(hù)中安全方便還要注意到夾具結(jié)構(gòu)的標(biāo)準(zhǔn)化，夾具制造的精密化。為了保證夾具組裝精度，需要學(xué)習(xí)了解工件定位原理。根據(jù)這些原理結(jié)合零件的結(jié)構(gòu)特點(diǎn)確定零件在夾具中以一面兩孔作為定位，計(jì)算夾具的定位精度與夾緊力保證零件在夾具上的加工精度。然后使用CAD繪圖軟件參考夾具設(shè)計(jì)手冊繪制夾具元件的機(jī)械圖，完成夾具的設(shè)計(jì)。關(guān)鍵詞：橫臂工藝夾具IIAbstractThistopiccomesfromproductionpractice,makefulluseofwhathavelearnedmechanicaldrawing,mechanicaldesignandmechanicalmanufacturing,andotherprograms,tounderstandthecharacteristicsforthegasdistributionsector,throughtheCADsoftware,theuseofthesoftwaremappingfunction,completewithgassectorarmholesmillingdrillingfixturedesign.Intheresearchprojectsinthedesignphase,firstselectfromanumberofpartsasthedesignofafixtureparts.Forthatpartofthestructuralcharacteristicsofthedevelopmentofthepartsprocessingtechnology.Second,wemustunderstandthefixtureknowledge,combinedwiththestructuralfeaturesofcomponentsselecttherequiredfixturecomponents,thegeneralstructureoffixturedesign.Asanimportantfixtureofthetechnologyandequipmentinthemechanicalmanufacturingprocessplaysanimportantrole,itisdesignednotonlytoensurethattheworkpieceprocessingquality,improveprocessingefficiency,reducecosts,intheoperationandmaintenanceofsafeandconvenientbutalsonotedthatFixturestructureofstandardization,theprecisionoffixturemanufacturing.Inordertoensurethefixtureassemblyofprecision,needtolearntounderstandprinciplesofpositioningtheworkpiece.Combinationofcomponentsbasedontheseprinciplestodeterminethestructuralcharacteristicsofcomponentsinthefixturetoonesidetwoholesasthepositioningofthepositioningaccuracyofcalculationoffixtureclampingforcetoensurethepartswiththefixtureonthemachiningaccuracy.AndthenusetheCADdrawingsoftwarereference