深孔振动钻削装置的设计

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1、毕业设计说明书深孔振动钻削装置的设计学生姓名：学号：学院：机械工程与自动化学院专业：机械设计制造及其自动化指导教师：2011年6月深孔振动钻削装置的设计摘要：由于深孔加工是在封闭或半封闭的状况下进行，因此不能直接观察刀具的切削情况，切削热不易传散，而且排屑困难，工艺系统刚性差，切削效果不理想，特别是0.8mm以下，长径比大于10,IT7以上的精密深孔的加工，是目前国内外的技术难题。本课题设计时，在对振动钻削和DF负压抽屑机理进行深入研究的基础上，设计深孔振动钻削装置，采用普通车床配用一种电磁式振动装置，电磁式振动装置克服了深孔加工断屑排屑困难的问题，并且提高深孔的加工质量及加工效率。关键

2、词：深孔加工，振动切削，DF系统Deepholevibrationdrillingdevicedesign Abstract:becauseofthedeepholeprocessinginclosedorsemi-closedisconducted,andthereforecannotbedirectlyobservedthecuttingtool,cutting,andscatteredheatyiscrapsdischargedifficult,processsystemrigidityispoor,cuttingtheeffectnotideal,especially0.8mmb

3、elow,length-diameterratioismorethan10,IT7aboveprecisiondeepholeprocessing,isthetechnicalproblemsathomeandabroad. Thistopicdesign,forvibrationdrillingandthemechanismofsmokecrumbsDFnegativepressure,thoroughstudyonthebasisofthedeepholedesignvibrationdrillingdevice,USESordinarylathewithaassolenoidsty

4、levibratingdevice,assolenoidstylevibratingdeviceovercomesthedeepholeprocessingbrokenbitsscrapsdischargedifficultproblemsandimprovedeepholeprocessingqualityandmachiningefficiency. Keywords:deepholeprocessing,thevibrationcutting,DFsystem目录1引言·························································

5、·····11．1本课题研究的目的和意义·········································11.2国内外深孔振动钻削发展简况及深孔振动钻削的进展·················21．2．1国内外深孔振动钻削发展简况··································21．2．2深孔振动钻削的进展·········································51．3低频深孔振动钻削存在的主要问题································71．4本课题的来源及主要研究内容···············

6、······················71．5对深孔振动钻削技术的展望······································102振动钻削的断屑机理的研究·········································122．1振动钻削的完全几何断屑机理····································122．1．1振动切削为什么能断屑及断屑之充分条件·······················122．1．2切屑的形成·················································13

7、2．2力学断屑机理··················································142．3本章小结······················································153振动装置························································153．1振动装置的设计·····················