制造技術(shù)基礎(chǔ)

朽木易折，金石可鏤。千里之行，始于足下。第頁/共頁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工作進(jìn)給workingsurface加工面，工作面workpieceperipheralspeed工件的圓周轉(zhuǎn)速workpiecerotationalfrequency工件的轉(zhuǎn)速worktablemainmovement工作臺(tái)主運(yùn)動(dòng)

directionofmainmovement主運(yùn)動(dòng)方向directionoffeed進(jìn)給方向

feedmovement進(jìn)給運(yùn)動(dòng)cuttingdepth切削深度

rakeface前刀面noseoftool刀尖jig夾具

rakeangle前角clearanceangle后角spindle主軸benchmark基準(zhǔn)

機(jī)械發(fā)明基礎(chǔ)實(shí)驗(yàn)（同金工實(shí)習(xí)）Wecontactedmanymachinesusedformaterialprocessing,suchaslathe[le?e]/turningmachine,millingmachine(銑床),planer(刨床),drillpress(鉆床),grinder(磨床),andalsoknowsomeoftheadvancedequipment,suchasprocessingcenter.Processingcentercanprocessamaterialwithdifferentprocessingmethods.Processingcenterhaveatoolmagazine,whenprocessing,itcanselectadifferenttoolasweneed.Processingcenterisahighlyefficientmachine.Itcancompleteacomplicatedobjectwithmanydifferentprocessing.在這門課程，我們對一些機(jī)械零件舉行了分析和測試,例如我們舉行了齒輪加工的模擬。齒輪加工主意有兩種基本加工類型:成形法和展成法常用的齒輪加工主意有:銑齒,滾齒,插齒Inthisexperimentwemainlygettoknowsomemechanicalpartsandanalyzethem.Forinstance,gearmachiningmethodhastwobasictypes:formingmethodandgeneratingmethod

Commonlyusedingearcuttingmethodsare:milling（銑）andhobbing（滾齒）.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