高速铣削表面粗糙度预测与铣削参数优化-研究

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1、哈尔滨理工大学工程硕士学位论文ResearchonSurfaceRoughnessPredictionandParameterOptimizationofHighSpeedMillingAbstractThehighspeedcuttingbecauseofitshigherefficiencyandaccuracyfullyisappliedinvariousfield.Evenso,inordertomakeitfurtherdevelopment,manyrestrictingfactorsiswaitedforsolving.Atpresen

2、t,toobtainsingleoneofthehighefficiencyandaccuracyisnotenough.Howtosimultaneouslyobtainhigherefficiencyunderthepartsaccuracyguaranteedinordertobetterandfullyplaytheadvantagesofhighspeedmachining.Asaresult,ithasveryimportantrealisticmeaningthatthekeytechnologiesofhighspeedmilling

3、surfaceroughnessarestudied.Theinfluenceofvariousfactorsonthehighspeedmillingsurfaceroughnessisanalyzed.Themethodoftheoryfuzzyisputforwardtoobtainmoreaccuratepredictionmodel.Andthefuzzysystemistrainedbythealgorithmwhichcombinewithleastsquaremethodandthebasicantcolonyalgorithm.Th

4、econtrasttestshowsthatthefinalconvergenceerroroffuzzysystemtrainedbyimprovedalgorithmisthesmallestandtheconvergenceeffectofwhichisoptimal.Themodelobtainedbythefuzzysystemispredictedthroughthetestdataandthecorrectnessandaccuracyofthemodelbasedonthenewfuzzysystemisprovedtobebette

5、r.Inaddition,millingparameteroptimizationmathematicalmodelisestablishedwhichputmachiningaccuracyandefficiencyastheoptimizationgoalandthoughtheresidualstressandthetoollifeasconstraints.AndtheDynamicAntAlgorithmGeneticAlgorithmisadoptedtooptimizethemodelcalculation.Themethodnoton

6、lyretainstheadvantageofstrongrobustnessoftheoriginalsinglealgorithmbutalsoimproveitslocalsearchingabilityandconvergence.Fordifferentprocessingrequirements,theaccuratemillingparametercombinationcanbegotmorequickly.Finally,withVisualC++6.0asthesoftwaredevelopmentplatform,millingp

7、arameteroptimizationsystemisdevelopedtorealizetheMATLABsoftwarecalls,whichcancompleterapidpredictionofhigh-speedmillingsurfaceroughness.Bythesystemthetimeofpracticalproductionissavedandtheprocessingefficiencyisimproved.II哈尔滨理工大学工程硕士学位论文Afterthekeytechnologiesofsurfaceroughnessp

8、redictionbasedonhighspeedmillingandmillingparameteropt