资源描述：
《新型超声椭圆振动无心磨削技术》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、新型超声椭圆振动无心磨削技术??第8卷??第6期2010年11月纳??米??技??术??与??精??密??工??程NanotechnologyandPrecisionEngineeringVo.l8??No.6??Nov.??2010范玉峰,唐??昆,尹韶辉,朱勇建,吴勇波11112(1.湖南大学国家高效磨削工程技术研究中心,长沙410082;2.日本秋田县立大学,秋田县015-0055)摘??要:本文提出一种以超声椭圆振动板取代传统导轮的新型无心磨削技术,通过对该部件中的压电陶瓷(leadzirconatetitanate,PbZrTiO3,PZT)施加交流电压,在该板端面产
2、生超声椭圆振动并控制工件的旋转速度.从振型、激振方式、结构和尺寸等方面,对该超声椭圆振动部件进行了设计,研究了输入信号参数(频率、相位差和电压幅值)与振动部件中金属板端面超声椭圆振动的形状和幅值之间的关系.实验结果表明,该超声椭圆振动板具有良好的性能,其端面的超声椭圆振动能精确控制工件旋转的速度.最后,采用改进后的超声椭圆振动无心磨床对初始直径为1mm~5mm的微小圆柱形工件进行了磨削实验.实验结果表明,磨削后工件的圆度误差从20??m下降至3??m以下,其最小值达到0??73??m,磨削后工件最小直径达到130??m,从而证实了新型无心磨削技术的有效性.关键词:无心磨削;超声
3、椭圆振动部件;压电陶瓷(leadzirconatetitanate,PbZrTiO3,PZT);微小零部件———————————————————————————————————————————————中图分类号:TG580??????文献标志码:A??????文章编号:1672-6030(2010)06-0484-07NewUltrasonicEllipticVibrationCenterlessGrindingTechniqueFANYu-feng,TANGKun,YINShao-hui,ZHUYong-jian,WUYong-bo2.AkitaPrefecturalUniv
4、ersity,Akita015-0055,Japan)11112(1.NationalEngineeringResearchCenterforHighEfficiencyGrinding,HunanUniversity,Changsha410082,China;———————————————————————————————————————————————Abstract:Anovelcenterlessgrindingmethodusinganultrasonicellipticvibrationshoeinsteadofthetra-ditionalregulatingwhe
5、elwasdevelopedinthispaper,inwhichtheendfaceofthevibrationshoegenera-tedanellipticmotionatahighfrequencyandcontrolledtherotationalspeedoftheworkpiecewhenthea-lternativecurrent(AC)voltageswereappliedtothepiezoelectricceramicdevice(leadzirconatetitanate,PbZrTiO3,PZT).Theultrasonicellipticvibrat
6、ionshoewasdesignedintherespectsofvibrationmode,excitationmethod,structureanddimensions.Therelationshipbetweentheparametersofinputsigna,lsuchasfrequency,phasedifference,andvoltageamplitude,andtheshapesandamplitudesoftheultra-sonicellipticvibrationattheendoftheshoewasalsoinvestigated.Experimen
7、talresultsshowthattheu-ltrasonicellipticvibrationshoehadagoodperformanceandtheultrasonicellipticvibrationontheendfaceoftheshoecouldcontroltheworkpiecerotationprecisely.Finally,grindingexperimentswereconductedonthemicrocylindricalworkpieceswiththein
