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朽木易折,金石可镂。千里之行,始于足下。第页/共页FoundationofMechanicalManufacturingTechnologyMasterbasicprinciplesofmetalcutting.Mastertheanalysismethodsoftypicalmachinetooltransmissionroute.Havebasicabilityinformulatingmachiningrules,designingjigs,analyzingandsolvingthemachiningtechniqueproblemsinmechanicalmanufacturingprocess.Layafoundationtoengageinthetechnologyandmanagementofthisprofession.Fromtheviewofcommonproblemofmanufacturingtechnology,thiscoursegivesasystemicintroductionabouttheequipmentsandproceduresofcuttingmanufacturingtechnology.Themajorinclusionisasfollows:thefoundationofmachiningsystem,optimizationandcontrolofcuttingprocedure,function,performance,transmissionandmajorstructureofvariousmanufacturingtechnologyequipment,designofmanufacturingprocessroutine,qualityofproduct,andnewdevelopmentofmodernmanufacturingtechnologysuchasGT,NCmachining,CAM,CAPP(ComputerAidedProcessPlanning),CIMSandsoon.CAPPistheuseofcomputertechnologytoaidintheprocessplanningofapartorproduct,inmanufacturing.CAPPisthelinkbetweenCADandCAMinthatitprovidesfortheplanningoftheprocesstobeusedinproducingadesignedpart.Inthiscourse,themainpointisthemanufacturingtechnology.NC:Numericalcontrolreferstotheautomationofmachinetoolsthatareoperatedbyabstractlyprogrammedcommandsencodedonastoragemedium.InthemodernCNCsystem,end-to-endcomponentdesignishighlyautomatedusingCADandCAMprograms.Theprogramsproduceacomputerfilethatisinterpretedtoextractthecommandsneededtooperateaparticularmachine,andthenloadedintotheCNCmachinesforproduction.Sinceanyparticularcomponentmightrequiretheuseofanumberofdifferenttoolssuchasdrills,sawsandsoon,modernmachinesoftencombinemultipletoolsintosinglecell.Inothercases,anumberofdifferentmachinesareusedwithanexternalcontrollerandhumanorroboticoperatorsthatmovethecomponentfrommachinetomachine.Ineithercasethecomplexseriesofstepsneededtoproduceanypartarehighlyautomated.Itisautomaticprogramming,anotherismanualprogramming.Thiscourseintroducessomemachinetoolsandcuttingtheory.Wemainlylearnbasictheoryofcutter,forexample,thecutter’sgeometricsize,whatisworkingcuttingedge.

Themanufacturingtheoryintroducetheprocessingofparts,forexample,theoperation,weshouldfirstprocesswheretheyareeasilyprocessing.

Ifwewanttoensureprecisionofthissize,weshouldmakethispositionasbenchmark.

Cuttingtheory

angleandforce

benchmarkandallocation

locate

workingfeed工作进给workingsurface加工面,工作面workpieceperipheralspeed工件的圆周转速workpiecerotationalfrequency工件的转速worktablemainmovement工作台主运动

directionofmainmovement主运动方向directionoffeed进给方向

feedmovement进给运动cuttingdepth切削深度

rakeface前刀面noseoftool刀尖jig夹具

rakeangle前角clearanceangle后角spindle主轴benchmark基准

机械发明基础实验(同金工实习)Wecontactedmanymachinesusedformaterialprocessing,suchaslathe[leɪð]/turningmachine,millingmachine(铣床),planer(刨床),drillpress(钻床),grinder(磨床),andalsoknowsomeoftheadvancedequipment,suchasprocessingcenter.Processingcentercanprocessamaterialwithdifferentprocessingmethods.Processingcenterhaveatoolmagazine,whenprocessing,itcanselectadifferenttoolasweneed.Processingcenterisahighlyefficientmachine.Itcancompleteacomplicatedobjectwithmanydifferentprocessing.在这门课程,我们对一些机械零件举行了分析和测试,例如我们举行了齿轮加工的模拟。齿轮加工主意有两种基本加工类型:成形法和展成法常用的齿轮加工主意有:铣齿,滚齿,插齿Inthisexperimentwemainlygettoknowsomemechanicalpartsandanalyzethem.Forinstance,gearmachiningmethodhastwobasictypes:formingmethodandgeneratingmethod

Commonlyusedingearcuttingmethodsare:milling(铣)andhobbing(滚齿).Gearsaremostcommonlyproducedvia\o"Hobbing"hobbing,buttheyarealso\o"Gearshaper"shaped,\o"Broaching(metalworking)"broached,and\o"Casting"cast.Plasticgearscanalsobe\o"Injectionmolding"injectionmolded;forprototypes,\o"3Dprinting"3Dprintinginasuitablematerialcanbeused.Formetalgearstheteethareusually\o"He

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