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1、相关专业英文翻译ModernComputer-AidedPartProgrammingØModerndevelopmentintheprocessofCNCprogrammingInthepast,programmingwasperformedmanually.Theprogramwaswritteninwordaddressandwastailoredtorunonaparticularcontroller.Trigonometrywasamustfordeterminingtoolpaths.TheCNCmachin
2、eneededtobehaltedwhiletheoperatorkeyedtheprogramintothemachinecontrolunit.TheCNCmachinewasfurthertiedupforprogramverification,whichinvolvedmachiningatestpartandinspectingtheresults.Thedigitalcomputer,however,haschangethewayprogramsarewritten,checked,andrun.Someof
3、themostdramaticimprovementsprovidedbythecomputerincludeoff-lineprogramming,theuseofcomputer-aidedprogramminglanguage,andtheapplicationofCAD/CAMtoprogramming.CNCmachinesoperateatoptimizationwhenturningpartprogramsandmachiningparts.Thisgoalisachievedwhennewprograms
4、arewrittenandtestedatanoff-linecomputerterminal.Theprogramcanbecomposeddirectlyinwordaddress(GcodesandMcodes)withtheaidoftexteditingsoftware.Itcanbetestedandthenstoredonpunchedtapes,diskettes,Zipdiskettes,orCD-ROMmedia.Iftheremotecomputerhasacommunicationlinetoth
5、eCNCmachine,theprogramcanbedownloadeddirectlytothemachine’scontroller.Thistechniqueisknownasoff-lineprogramming.ØAnIntroductiontoComputer-AidedProgrammingLanguageThecontrollerofaCNCmachinecanonlyoperateonwordaddress(GcodesandMcodes).Furthermore,thesecodesmustbeen
6、teredaccordingtoaspecificformatacceptabletotheparticularcontroller.Acomputer-aidedprogramminglanguageismeanttoaddresssomeoftheseproblems.Acomputer-aidedprogramminglanguageallowstheprogrammertounitetheprogramusingEnglish-likecommand,notGandMcodes.Becausethetoolpat
7、hisdescribedintermsofthesecommands,trigonometriccomputationsarenotneeded.Alltoolparameterssuchastooldiameter,toolspeeds,andfeedsareeasilyspecific.Furthermore,theprogrammerneedn’tbeconcernedwithtailoringtheprogramtoaparticularcontroller.Aprogramknownasapostprocess
8、orcanbeusedtoautomaticallytranslatetheprogramwritteninacomputeraidedprogramminglanguageintoacorrespondingwordaddressprogram.Specialpostprocessorshavebeenwritte
