超声振动辅助电火花加工表面成形机理研究.docxVIP

2024年第53卷第16期Vol.53No.162024

热加工工艺

HotWorkingTechnology

ISSN1001-3814CN61-1133/TG

DOI:10.14158/j.cnki.1001-3814.rjggy@

超声振动辅助电火花加工表面成形机理研究王岩,石健,樊凌峰,董颖怀,杨硕,蔡清睿(天津科技大学机械工程学院,天津300222)

摘要院以TC4钛合金作为工件材料袁通过建立高斯热源在工件表面的分布模型袁描述了单脉冲电火花加工凹坑的成形机理遥为了验证模型的准确性袁进行了仿真和实验验证遥结果表明院通过分析仿真得到的温度场云图和实验测得的数据发现袁高斯热源分布模型与两者一致遥在引入超声振动后,表面粗糙度降低35%～46%袁材料表面凹坑明显减少袁表面形貌发生显著变化遥随振幅增大袁高斯热源分布曲线的最大值减小袁温度场中心最高温度降低袁深度变浅的表面凹坑数量增加袁单个凹坑的面积增加袁表面粗糙度变好遥

关键词院超声振动曰电火花加工曰高斯热源曰表面粗糙度曰表面凹坑

中图分类号院TG174 文献标识码院A 文章编号院1001-3814(2024)16-0148-04

ResearchonSurfaceFormingMechanismofUltrasonicVibrationAssistedEDMWANGYan,SHIJian,FANLingfeng,DONGYinghuai,YANGShuo,CAIQingrui

(CollegeofMechanicalEngineering,TianjinUniversityofScienceTechnology,Tianjin300222,China)Abstract院TC4titaniumalloywasusedasworkpiecematerial,andtheformationmechanismofsinglepulseEDMpits

wasdescribedbyestablishingaGaussianheatsourcedistributionmodelonthesurfaceoftheworkpiece.Inordertoverifytheaccuracyofthemodel,thesimulationandexperimentalverificationwerecarriedout.Theresultsshowthatbyanalyzingthetemperaturefieldclouddiagramobtainedbysimulationandthedatameasuredbyexperiment,itisfoundthattheGaussianheatsourcedistributionmodelisconsistentwiththem.Aftertheintroductionofultrasonicvibration,thesurfaceroughnessisreducedbyabout35%to46%,thepitsonthesurfaceofthematerialaresignificantlyreduced,andthesurfacemorphologychangessignificantly.Astheamplitudeincreases,themaximumvalueoftheGaussianheatsourcedistributioncurvedecreases.Themaximumtemperatureinthecenterofthetemperaturefielddecreases.Thenumberofshallowersurfacepitsincreases.Theareaofasinglepitincreases.Thesurfaceroughnessbecomesbetter.

Keywords院ultrasonicvibration;electricaldischargemachining(EDM);Gaussianheatsource;surfaceroughness;surfacepits

超声振动辅助电火花加工渊UEDM冤主要