模具型腔數(shù)控加工刀具優(yōu)選.pdf

1、分類號：即弓f密級：Z83n88單位代碼：／0華移萼號t9乙參9220菇0L莨，1≮碩士學位論文論文題目：糨徹目虧翔秀咖2襻鏈作者姓名專業(yè)指導教師姓名專業(yè)技術(shù)職務絲!!塾擬摯陋敏J趔爐‰?yún)材?月知日山東大學碩士學位論文AninvestigationofoptimaltoolsequenceselectionforpocketNCmachiningA丑STRACTDuringtheinvestigationofdiepocketNCmac

2、hining，theissuethatappropriatetoolsequenceselectedautomaticallyshouldbeconsideredfirstTheselectionofcuttingtoolsiSacomplicatedandoptimalprocess，whichiSaffectedbymanyfactorsThepresentCA功，CAMsystemsstillrequireprocessorsto

3、selecttoolsandcuringparametersmanuallySubsequently，theprocessorsproduceCLSFfilesandNCmachiningprogramsbyusingthemoduleofposVrocessorT站qualityofNCprogramsdependstoomuchontheuser’stechniqueandexperience，whicharepronetocaus

4、elowefficiencyThecuttingtoolsnotonlyneedthecapacityinmetalremovalprocesses，butalsoareoptimalonesunderoptimizedobjectivesAccordingly，jtjSnecessarytooptimizecuttingtoolsbeforecutting也eparts，whichcouldletprocessors1ackofexp

5、erienceandtechniqueedithighefficiencyNCprogramsRoughcutisoneofthemostimportantstagesinNCmachiningItsmainfunctionistoremoveredundantmaterialfromtheworkpieceingreatquantity，andonlyreserveappropriatepartstockwhichwillberemo

6、vedbysemi—roughandfinecutsInfact，approximately70％ofrawmaterals、Ⅳillberemovedinthesteoofroughcutwhencomplicateddies／mouldsandpartsaremachinedbyNCmachines，SOroughcutconsulDesplentifuloftimeConsequently，duringtheroughcutofp

7、ocketmachining，itissignificanttoselectcuttingtoolsaimedatthelowesttimebasedproductioncostwhichcanshortenprocessingtime，improveproductivityandreduceproductioncostInbrieffirstly，thispaperintroducesCAD／CAMtechniqueSecondly，

8、itdevelopsacuringtoolssystembasedondie／mouldpocketNCmachiningToattaintheshortest—pathinthesingle—source，directed，acyclicgraphcanbeobtainedbyempleyingDijkstra’algorithm，wecanobtainoptimaltoolscombination，correspondingcutt

9、ingparametersandtheminimalmachiningcostLasuY，wecandevelopNCG&Mcodesbyusinghi曲Cm)／CAMsoflware一一UG，andsimulatemachiningbyusingNCprocessingemulatorsystem(NCEdit)developedbyourselvesKeywords：Pocketmachining，Optimaltoolsselec