文献翻译基于Web的CADCAM系统设计及关键技术研究.docx

文献翻译基于Web的CADCAM系统设计及关键技术研究.docx

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文献翻译基于Web的CADCAM系统设计及关键技术研究

附录

BaseontheWebCAD/CAMsystemdesignandkeytechniquesstudy

1.preface

Turnalongwiththeeconomicworldofdevelopincreasingly,manufacturingindustryistakingplaceadirectionfordeeplyreplacing,increasinglyhighautomation,intelligenceinfacingturn,gatheringturningwithnetworkturningdevelopment.MakeuseofthenetworktechniquewellespeciallyInternetwiththetechniqueofIntranet,realizethemanufacturingresourcesshare,supporttheworldthatacrosstheregion,cross-platformmakes,willbefromnowononeoftheimportantdevelopmentdirectionofthemanufacturingindustry.theCAD/CAMtechniqueconductandactionsmanufacturingindustryguaranteestheemollienttoolofthecompetitionability,atshortentheproductappearsonmarkettheperiodandincreasesquantity,declinelowcostetc.developtoemphasizetowantthefunction.ButblendswiththetechniqueofCAD/CAMmutuallythenetworktechniqueofaccordingtoWebthetechniqueofCAD/CAM,havebecometheimportantdirectionthatthetechniqueofCAD/CAMdevelop.

Underthecurrentcircumstance,thedomesticandinternationalbusinessenterpriseusesthesystemofCAD/CAMtoneedstodeveloptothesoftwareofCAD/CAMgenerallyandallthecompanypurchasesmanyagradecreepforcopying,andtothesystemofCAD/CAMtousuallythesoftwaredevelopsthecompanyisresponsibleof,thereforebeingWhenthesoftwarepromotetohighergrade,thebusinessenterprisebeardfacestodevelopthecompanyhandsoverthenumberofconsiderableeditiongradecreepfee,andthebusinessenterprisemustthrowinthelargequantitymanpowerfinancialpowertoproceedthemaintenancetothesoftware,thistobusinessenterprisesisaveryheavyincidence.AndhaveaccordingtoWebCAD/CAMsystemhereafter,businessenterpriseacalculationforneedingprovidingtoservicecompany（certainlylargebusinessenterprisetoocanoneselfestablishsuchsystem）applyingforanaccountnumber,canatwhicheverandlocallyanylyfirstsetconnectingintoInternetisonboardtopassthenetworkconjunctionserverusageserviceprovidesthatcompanyprovidetheCAD/CAMsoftwareproceedstheproductdesign,engineeringtheanalysisandprocesstoweavedistanceetc.work,andhavenotoneedtopreparetopackanysoftware.Likethisbusinessenterprisesinceneednotproceedingtakesalotoftimethehardtotacklesoftwarechoosesthetype,evenavoidingthesoftwaregradecreepandtheagonyofthemaintenance,butthegradecreepofthesoftwarebeprovidedbyservicewithmaintenancethecompanycompletes.ThiskindofaccordingtoWeathersystemofCAD/CAMdoubtlesswilltotheappliedmodeofthebusinessenterpriseCAD/CAMwiththeCAD/CAMsoftwareindustryproducestheimportantinfluence.2.BaseontheWebCAD/CAMsystemdesign

ThesystemconstructionofthissystemdesignadoptionB/S（browser/server）mode,wholesystemfromthebrowserofWeb（TheautothatincludetheWebbrowserdownloadsthemovementthecustomercarriesthesoftware）,softwareandbackstagedatabasesthatservercarrythreepartsconstitute.It’sbasicframeconstructionisshownasdiagram.

Theworkflowofthesystemisasfollows:

1）ThecustomerpassesWebbrowserimportationcustomerwithpassword.

2）Theserverisstrictandwholecanabodyanusefulness.

3）TheservercarriesthebrowserofWebdynamicbornwebpage（amongthemincludethecustomercarrythesoftware）returnstocarrythecustomer.

4）Customer'ssoftware（existswiththeJavaAppletform）self-usestocirculateinthebrowserofWeb.

5）ThecustomerpassesthecustomercarriesthesoftwareproceedingtheCAD/CAMdesigns.Theamongthemgeneralsketchdesignisdirecttocarryatthecustomer

Complete.

6）ThecustomerprecedesthecurveandWhenthecurvedfacedesign,passthecustomercarrythesoftwarehandsovertheparametercarriestheserverhomologousplace

Managemoldpiece.

7）Theservercarriesofhandlethemoldaparameterforaccordingtocustomerhandingoverprecedethecalculation.

8）Theservercarryandwillhandletheresultreturnstocarrythecustomer.

9）Thecustomercarriesthesoftwareaccordingtotheresultprecedingmanifestationthatreturn.

Inwholesystem,itiscenterthatservercarrythatwholesystemthatmanagement,customerthenormalsafetycirculate,thefunctionofCAD/CAMthatthegradecreepthatsystemcarrythesoftwarecarrieswithcurvedfacewithmaintenanceandcomplicacycurvestocalculatetheetc.complicacyallfromittocomplete.Butwhatcustomercarryinstallsthenoppositesimple,installedthebrowserofWebonly.

3.Afewkeystechniqueofthesystemdesigninside

3.1Thecustomercarrieswiththeserverallotmentofcarryingthefunction

ThissystemconductandactionsistypicalthreelayerB/Smode,becarriedbycustomertocarrywiththeserverandthebackstagedatabaseconstitutes.Thedatabaseusedforthesavingcustomerinformation,documentinformationwithprocessthecraftparameteretc.data,itsfunctioniscertain.Thereforehowtocarrythecustomertocarrytoassignwiththeserverthefunctionisaninitialproblemtoproceedthesystemdesignthehourmustresolve.Ifallfunctionsdependsontheservertorealizeallandexcessively,thenbecausethesystemofCAD/CAMhandsoverwitheachotherthesexisverystrong,thedatadeliversmultifarious,causeeasilycustomermachineandserveraformationbottleneck;butatthesametimebecausethehardwarethatcustomercarryinstallsthespecificationgenerallower,allowthemulti-functionrealizing,alsocan'tbecarriedbycustomertoundertaketheexcessivemissionobviously.InconsiderationofabovecircumstanceandcombinationasystemusestheJava2DprimarilywiththetechniqueofJava3Dtodevelopthesketch.Customerinterfacethispresentcondition,theCAD/CAMsystemfunctioninsidecanbedirectissolidwiththeJava3DfromtheJava2D.

Nowofthefunctionassignsthecustomercarries.Thatthesefunctionlesshavenoworktoneedadditionallycanrealize,canthentheprovincegoestobigmostofthedevelopmentworks,andthesefunctionlesscarrytothecustomerthehardwareinstalltoalsohavenotoohighrequest,generalcustomer'smachinecanbear.Thesefunctionlessincludeoverwhelmingmajorityinaspecificwaytwothesketchofdimensionsdrawwithoperateandthreethesomebasicbodiesofthesketchofdimensionsdrawwithoperate.

Astofreecurve,curvedfacedesignetc.can'tbedirectfromtheJava2DwithfunctionthatJava3Dprovide,andthenfromThemachineiscarriedtoprovidethesefunctionless.Whenthecustomercarriesthefunctionthatmeetthesecomplicacies,passingtocorrespondbyletterthemoldpiecehandsoverparametertoservertohandlestotheproceeding.Theservercarriestohandlesexclusivelythemoldaparameterfor,accordingtocustomerhandingoverinformationproceedstocarrytocalculate,theresultthatthenwillhandlereturnstocarrythecustomerthemanifestation.

3.2Thedataexchangesthemethod

BecausethissystemworksontheWeb,thefunctionthatcustomercarryismoresimple,alotofmissionneedstohandovertocarrytheservertohandle,theservercarriestoalsoneedstoreturntohandletheresultcarriesthecustomer,thedataneedstobecarriedatthecustomerinevitablytoproceedthemultifariouscommutationwiththatservercarry,sohowtoguaranteesthedatavalidwithdependabilityatbothitpassesnetworkdelivertomaketodesigntheprocesstoproceedsuccessfullycountformuch.

Thedataofthissystemexchangestopassprimarilybelowwhattimecometorealizesof:

（1）AdoptiontheTCP/IPagreement（transmissioncontrolprotocol/netontheoccasionofagreement）proceedstheSocketplaitdistance.TheTCP/IPagreementhashighlydependable,itallowsheavyspreadingwhichbecauseeverykindofreasonhalfway"walkdatathatlose",andcanguaranteethenodalsequenceinwordthatreceivesendsoutwiththemissimilar.

（2）ThecorrespondenceportthatSocketplaitdistanceadoptionisexclusively.Ifusetocorrespondbyletterwithotherservicetotallytheportproceedsthecommunication,sufferingothertheinterferenceoftheserviceadataforsendingoutveryeasily,thereforethecorrespondenceportpassingexclusivelyproceedsthecorrespondencecanguaranteetheproceedingdatatodeliverdependablely.Whatthissystemadoptis2002port.

（3）Thespecializedsketchinestablishmentdeliverstheagreement.Thisisthebasictermtoguaranteedataexchangevalid,realizesdependablely.Havingnothespecializedsketchdeliverstheagreement,thedataexchangesvalidwithdependableproceedingimpossiblerealize.

Themainprocessthatthissystemdataexchangeismainlyasbelow:

（1）Thecustomercarriestocarrytopasswiththeservertheparticularsketchport（2002）establishesaSocket.（thesetconnectstheword）

（2）Theservercarriestocustomertosendoutarowofcharacterssignstring,meanthatthesetconnectsthewordFthroughestablish.

（3）Customer'smachinesendsouttoservertheaddressofcustomer'smachine.

（4）Theserversendsouttocustomer'smachinealineofwelcomeinformation.

（5）Customer'smachinesendsouttoservercustomerwithpassword

（6）Theservercarriestheproceedingverification.Iftheverificationissuccessful,thensendouttocustomer'smachinetheinformationofOK.Otherwise,sendouttheinformationoffail.

（7）Customer'smachinesendsouttoservertheinformation.

（8）Theconcreteinformationinserverthatsendoutproceedstohandleaccordingtocustomer'smachine.Ifisaproceedingtosophisticatetohandle,thenenteraccordingtothehomologousstep

Thelinehandles,theguardstohandletheresultreturn（9）thecloseSocket.（theset