旋转超声加工用纵扭共振变幅杆的动力学分析
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摘要
旋转超声振动加工在加工硬脆性复合材料方面应用越来越广,旋转超声振动系统性能的好坏直接影响超声加工的质量,而超声变幅杆是该系统中必不可少的结构器件。针对超声铣磨加工,设计了一种纵扭共振复合型变幅杆。计算了纵振圆锥—圆柱复合变幅杆的结构参数和功能参数,并与有限元分析结果做了比较。阐述了通过圆环斜槽来实现振型转换的基本原理,并通过有限元分析的方法,分析了斜槽的几何参数对变幅杆振动模态和性能参数的影响规律。
Rotary ultrasonic machining is used in machining hard and brittle materials more and more widely.The property of rotary ultrasonic system affects the processing quality directly,while the ultrasonic horn is the essential component in this system.A kind of longitudinal-torsional horn for ultrasonic milling machining was designed.The structure parameter and functional parameter of this cone-cylinder horn were calculated and compared with the simulation results by FEA.Then the basic principle for modal transformation by diagonal silts was stated.FEA method was also used to analyze the influence of the geometrical parameters of diagonal slits on mode and performance parameter of the horn.
Rotary ultrasonic machining is used in machining hard and brittle materials more and more widely.The property of rotary ultrasonic system affects the processing quality directly,while the ultrasonic horn is the essential component in this system.A kind of longitudinal-torsional horn for ultrasonic milling machining was designed.The structure parameter and functional parameter of this cone-cylinder horn were calculated and compared with the simulation results by FEA.Then the basic principle for modal transformation by diagonal silts was stated.FEA method was also used to analyze the influence of the geometrical parameters of diagonal slits on mode and performance parameter of the horn.
引文
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[2]叶发根,曹辉,林书玉.一种新型扭转振动压电陶瓷超声换能器[J].压电与声光,2010,32(3):410-413.(Ye Fa-gen,Cao Hui,Lin Shu-yu.A new type of torsional vibration piezoelectric ceramic ultrasonic transducer[J].Piezoelectrics&Acoustooptics,2010,32(3):410-413.)
[3]张兵,张云电.超声车铣圆环斜槽传振杆设计[J].机电工程,2010,27(12):11-14.(Zhang Bing,Zhang Yun-dian.The design of circle chute vibration rod for ultrasonic turn-milling[J].Mechatronics Engineering,2010,27(12):11-14.)
[4]Takuya Asami,Hikaru Miura.Vibrator development for hole machining by ultrasonic longitudinal and torsional vibration[J].Japanese Journal of Applied Physics,2011,50(7):1-19.
[5]林书玉.大振幅纵-扭复合振动模式超声变幅杆[J].压电与声光,2002,24(1):81-84.(LinShu-yu.Longitudinal-torsionalcompositemodeexponentialultrasonic horns with large amplitude[J].Piezoelectrics&Acoustooptics,2002,24(1):81-84.)
[6]刘世清,林书玉.工具杆几何尺寸对超声扭转振动特性的影响[J].应用声学,2004,23(6):16-19.(Liu Shi-qing,Lin Shu-yu.Effects of geometry dimensions of the tool on the ultrasonic torsional vibration system[J].Applied Acoustics,2004,23(6):16-19.)
[7]王爱玲,祝锡晶,吴秀玲.功率超声振动加工技术[M].北京:国防工业出版社,2007.(WangAi-ling,ZhuXi-jing,WuXiu-ling.ThePowerUltrasonicVibration Machining Technology[M].Beijing:National Defence Industry Press,2007.)
[8]皮钧.圆环斜槽传振杆的纵扭振动转换[J].机械工程学报,2008,44(5):242-248.(Pi Jun.Longitudinal-torsional Vibration Converter of Cylinder with Multiple Diagonal Slits[J].Chinese Journal of Mechanical Engineering,2008,44(5):242-248.)